./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-queue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba --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 c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:26:20,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:26:20,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:26:20,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:26:20,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:26:20,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:26:20,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:26:20,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:26:20,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:26:20,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:26:20,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:26:20,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:26:20,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:26:20,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:26:20,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:26:20,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:26:20,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:26:20,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:26:20,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:26:20,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:26:20,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:26:20,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:26:20,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:26:20,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:26:20,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:26:20,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:26:20,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:26:20,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:26:20,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:26:20,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:26:20,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:26:20,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:26:20,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:26:20,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:26:20,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:26:20,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:26:20,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:26:20,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:26:20,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:26:20,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:26:20,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:26:20,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 00:26:20,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:26:20,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:26:20,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:26:20,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:26:20,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:26:20,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:26:20,806 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:26:20,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:26:20,807 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:26:20,807 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:26:20,807 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:26:20,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:26:20,807 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:26:20,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:26:20,808 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:26:20,808 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:26:20,808 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:26:20,808 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:26:20,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 00:26:20,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 00:26:20,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:26:20,809 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:26:20,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:26:20,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:26:20,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:26:20,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:26:20,810 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 00:26:20,810 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 00:26:20,811 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 00:26:20,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:26:20,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 00:26:20,811 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:26:20,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:26:20,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:26:20,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:26:20,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:26:20,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:26:20,812 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:26:20,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:26:20,813 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:26:20,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:26:20,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:26:20,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c858394bc83ab2c402eb20052f936c0a6aa98b2b6b6c704be79c039778bcff97 [2022-11-22 00:26:21,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:26:21,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:26:21,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:26:21,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:26:21,124 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:26:21,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/forester-heap/dll-queue-1.i [2022-11-22 00:26:24,166 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:26:24,404 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:26:24,405 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i [2022-11-22 00:26:24,416 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/data/152cb3d0c/884be40e5fae4c8b818858b57480b497/FLAG47f59576e [2022-11-22 00:26:24,431 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/data/152cb3d0c/884be40e5fae4c8b818858b57480b497 [2022-11-22 00:26:24,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:26:24,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:26:24,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:26:24,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:26:24,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:26:24,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:24,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d04b364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24, skipping insertion in model container [2022-11-22 00:26:24,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:24,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:26:24,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:26:24,780 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2022-11-22 00:26:24,791 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2022-11-22 00:26:24,794 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2022-11-22 00:26:24,797 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2022-11-22 00:26:24,799 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2022-11-22 00:26:24,801 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2022-11-22 00:26:24,803 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2022-11-22 00:26:24,806 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2022-11-22 00:26:24,810 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2022-11-22 00:26:24,812 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2022-11-22 00:26:24,814 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2022-11-22 00:26:24,817 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2022-11-22 00:26:24,820 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2022-11-22 00:26:24,823 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2022-11-22 00:26:24,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:26:24,848 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:26:24,917 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22460,22473] [2022-11-22 00:26:24,920 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22531,22544] [2022-11-22 00:26:24,921 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22605,22618] [2022-11-22 00:26:24,925 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22697,22710] [2022-11-22 00:26:24,926 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22774,22787] [2022-11-22 00:26:24,927 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22869,22882] [2022-11-22 00:26:24,931 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[22946,22959] [2022-11-22 00:26:24,932 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23029,23042] [2022-11-22 00:26:24,935 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23124,23137] [2022-11-22 00:26:24,936 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23201,23214] [2022-11-22 00:26:24,938 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23284,23297] [2022-11-22 00:26:24,940 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23373,23386] [2022-11-22 00:26:24,941 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23459,23472] [2022-11-22 00:26:24,944 WARN L237 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_227d8eba-5de5-4eee-845b-acb5e663545a/sv-benchmarks/c/forester-heap/dll-queue-1.i[23604,23617] [2022-11-22 00:26:24,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:26:24,986 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:26:24,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24 WrapperNode [2022-11-22 00:26:24,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:26:24,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:26:24,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:26:24,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:26:25,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,085 INFO L138 Inliner]: procedures = 119, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 226 [2022-11-22 00:26:25,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:26:25,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:26:25,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:26:25,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:26:25,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,132 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:26:25,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:26:25,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:26:25,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:26:25,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (1/1) ... [2022-11-22 00:26:25,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:26:25,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:26:25,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:26:25,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:26:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:26:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:26:25,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:26:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:26:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:26:25,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:26:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:26:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:26:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:26:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:26:25,455 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:26:25,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:26:25,949 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:26:26,027 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:26:26,028 INFO L300 CfgBuilder]: Removed 31 assume(true) statements. [2022-11-22 00:26:26,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:26:26 BoogieIcfgContainer [2022-11-22 00:26:26,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:26:26,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:26:26,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:26:26,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:26:26,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:26:24" (1/3) ... [2022-11-22 00:26:26,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dee3bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:26:26, skipping insertion in model container [2022-11-22 00:26:26,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:26:24" (2/3) ... [2022-11-22 00:26:26,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dee3bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:26:26, skipping insertion in model container [2022-11-22 00:26:26,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:26:26" (3/3) ... [2022-11-22 00:26:26,056 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-queue-1.i [2022-11-22 00:26:26,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:26:26,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2022-11-22 00:26:26,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:26:26,157 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45a7206f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:26:26,157 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2022-11-22 00:26:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 89 states have (on average 2.460674157303371) internal successors, (219), 165 states have internal predecessors, (219), 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) [2022-11-22 00:26:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 00:26:26,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:26,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 00:26:26,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash 14667, now seen corresponding path program 1 times [2022-11-22 00:26:26,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:26,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565023817] [2022-11-22 00:26:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:26,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:26,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:26,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565023817] [2022-11-22 00:26:26,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565023817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:26,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:26,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:26:26,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327861964] [2022-11-22 00:26:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:26,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:26:26,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:26,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:26:26,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:26:26,462 INFO L87 Difference]: Start difference. First operand has 166 states, 89 states have (on average 2.460674157303371) internal successors, (219), 165 states have internal predecessors, (219), 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) [2022-11-22 00:26:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:26,693 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2022-11-22 00:26:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:26:26,696 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 [2022-11-22 00:26:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:26,707 INFO L225 Difference]: With dead ends: 161 [2022-11-22 00:26:26,708 INFO L226 Difference]: Without dead ends: 159 [2022-11-22 00:26:26,710 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:26:26,714 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 154 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:26,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 93 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:26:26,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-22 00:26:26,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2022-11-22 00:26:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 91 states have (on average 1.835164835164835) internal successors, (167), 155 states have internal predecessors, (167), 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) [2022-11-22 00:26:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 167 transitions. [2022-11-22 00:26:26,764 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 167 transitions. Word has length 2 [2022-11-22 00:26:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:26,765 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 167 transitions. [2022-11-22 00:26:26,765 INFO L496 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) [2022-11-22 00:26:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 167 transitions. [2022-11-22 00:26:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 00:26:26,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:26,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 00:26:26,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:26:26,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash 14668, now seen corresponding path program 1 times [2022-11-22 00:26:26,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:26,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179701309] [2022-11-22 00:26:26,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:26,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:26,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:26,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179701309] [2022-11-22 00:26:26,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179701309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:26,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:26,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:26:26,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581316586] [2022-11-22 00:26:26,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:26:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:26:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:26:26,874 INFO L87 Difference]: Start difference. First operand 156 states and 167 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) [2022-11-22 00:26:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:27,028 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2022-11-22 00:26:27,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:26:27,029 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 [2022-11-22 00:26:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:27,063 INFO L225 Difference]: With dead ends: 147 [2022-11-22 00:26:27,064 INFO L226 Difference]: Without dead ends: 147 [2022-11-22 00:26:27,064 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:26:27,066 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 141 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:27,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 98 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:26:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-22 00:26:27,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2022-11-22 00:26:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 91 states have (on average 1.7032967032967032) internal successors, (155), 144 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) [2022-11-22 00:26:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 155 transitions. [2022-11-22 00:26:27,079 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 155 transitions. Word has length 2 [2022-11-22 00:26:27,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:27,079 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 155 transitions. [2022-11-22 00:26:27,080 INFO L496 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) [2022-11-22 00:26:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 155 transitions. [2022-11-22 00:26:27,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:26:27,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:27,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:27,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:26:27,082 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821487, now seen corresponding path program 1 times [2022-11-22 00:26:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:27,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426016942] [2022-11-22 00:26:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:27,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:27,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426016942] [2022-11-22 00:26:27,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426016942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:27,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:27,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:26:27,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214332489] [2022-11-22 00:26:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:27,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:26:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:26:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:26:27,360 INFO L87 Difference]: Start difference. First operand 145 states and 155 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-22 00:26:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:27,610 INFO L93 Difference]: Finished difference Result 152 states and 161 transitions. [2022-11-22 00:26:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:26:27,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2022-11-22 00:26:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:27,617 INFO L225 Difference]: With dead ends: 152 [2022-11-22 00:26:27,618 INFO L226 Difference]: Without dead ends: 152 [2022-11-22 00:26:27,619 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:26:27,623 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 250 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:27,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 97 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:26:27,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-22 00:26:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2022-11-22 00:26:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 97 states have (on average 1.6391752577319587) internal successors, (159), 144 states have internal predecessors, (159), 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) [2022-11-22 00:26:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2022-11-22 00:26:27,642 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 7 [2022-11-22 00:26:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:27,643 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2022-11-22 00:26:27,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-11-22 00:26:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2022-11-22 00:26:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:26:27,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:27,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:27,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:26:27,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:27,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1012821486, now seen corresponding path program 1 times [2022-11-22 00:26:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:27,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462290423] [2022-11-22 00:26:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:27,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:27,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:27,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462290423] [2022-11-22 00:26:27,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462290423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:27,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:27,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:26:27,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151515867] [2022-11-22 00:26:27,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:27,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:26:27,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:28,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:26:28,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:26:28,000 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-11-22 00:26:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:28,411 INFO L93 Difference]: Finished difference Result 235 states and 250 transitions. [2022-11-22 00:26:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:28,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 [2022-11-22 00:26:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:28,429 INFO L225 Difference]: With dead ends: 235 [2022-11-22 00:26:28,429 INFO L226 Difference]: Without dead ends: 235 [2022-11-22 00:26:28,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:26:28,431 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 314 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:28,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 202 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:26:28,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-22 00:26:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 151. [2022-11-22 00:26:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.6213592233009708) internal successors, (167), 150 states have internal predecessors, (167), 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) [2022-11-22 00:26:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2022-11-22 00:26:28,447 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 7 [2022-11-22 00:26:28,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:28,448 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2022-11-22 00:26:28,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-11-22 00:26:28,448 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2022-11-22 00:26:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:26:28,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:28,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:26:28,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1332694170, now seen corresponding path program 1 times [2022-11-22 00:26:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:28,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986553390] [2022-11-22 00:26:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:28,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:28,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986553390] [2022-11-22 00:26:28,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986553390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:28,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:28,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:26:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066382669] [2022-11-22 00:26:28,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:28,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:26:28,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:28,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:26:28,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:26:28,506 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2022-11-22 00:26:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:28,571 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2022-11-22 00:26:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:26:28,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2022-11-22 00:26:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:28,574 INFO L225 Difference]: With dead ends: 141 [2022-11-22 00:26:28,574 INFO L226 Difference]: Without dead ends: 141 [2022-11-22 00:26:28,574 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:26:28,575 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 119 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:28,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 114 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:26:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-22 00:26:28,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-11-22 00:26:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 98 states have (on average 1.5918367346938775) internal successors, (156), 140 states have internal predecessors, (156), 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) [2022-11-22 00:26:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 156 transitions. [2022-11-22 00:26:28,598 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 156 transitions. Word has length 8 [2022-11-22 00:26:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:28,598 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 156 transitions. [2022-11-22 00:26:28,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2022-11-22 00:26:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 156 transitions. [2022-11-22 00:26:28,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:26:28,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:28,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:28,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:26:28,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:28,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1636537440, now seen corresponding path program 1 times [2022-11-22 00:26:28,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:28,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826584954] [2022-11-22 00:26:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:29,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:29,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826584954] [2022-11-22 00:26:29,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826584954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:29,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:29,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:26:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891121081] [2022-11-22 00:26:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:29,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:29,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:29,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:29,023 INFO L87 Difference]: Start difference. First operand 141 states and 156 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-11-22 00:26:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:29,236 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2022-11-22 00:26:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:26:29,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2022-11-22 00:26:29,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:29,240 INFO L225 Difference]: With dead ends: 140 [2022-11-22 00:26:29,240 INFO L226 Difference]: Without dead ends: 140 [2022-11-22 00:26:29,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:26:29,246 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 5 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:29,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 357 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:26:29,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-22 00:26:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-22 00:26:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 98 states have (on average 1.5714285714285714) internal successors, (154), 139 states have internal predecessors, (154), 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) [2022-11-22 00:26:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2022-11-22 00:26:29,261 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 9 [2022-11-22 00:26:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:29,262 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2022-11-22 00:26:29,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-11-22 00:26:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2022-11-22 00:26:29,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:26:29,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:29,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:29,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:26:29,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1636537439, now seen corresponding path program 1 times [2022-11-22 00:26:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:29,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551321376] [2022-11-22 00:26:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:29,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:29,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551321376] [2022-11-22 00:26:29,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551321376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:29,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:29,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:26:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535532836] [2022-11-22 00:26:29,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:29,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:29,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:29,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:29,428 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-11-22 00:26:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:29,602 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2022-11-22 00:26:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:26:29,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 [2022-11-22 00:26:29,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:29,604 INFO L225 Difference]: With dead ends: 139 [2022-11-22 00:26:29,604 INFO L226 Difference]: Without dead ends: 139 [2022-11-22 00:26:29,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:26:29,606 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 4 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:29,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 357 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:26:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-22 00:26:29,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-22 00:26:29,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 98 states have (on average 1.5510204081632653) internal successors, (152), 138 states have internal predecessors, (152), 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) [2022-11-22 00:26:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2022-11-22 00:26:29,611 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 9 [2022-11-22 00:26:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:29,613 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2022-11-22 00:26:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2022-11-22 00:26:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2022-11-22 00:26:29,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:26:29,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:29,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:29,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:26:29,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash 754854527, now seen corresponding path program 1 times [2022-11-22 00:26:29,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:29,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657120718] [2022-11-22 00:26:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:29,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:29,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657120718] [2022-11-22 00:26:29,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657120718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:29,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:29,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 00:26:29,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600679582] [2022-11-22 00:26:29,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:29,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:26:29,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:29,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:26:29,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:26:29,963 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2022-11-22 00:26:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:30,282 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2022-11-22 00:26:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:26:30,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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 [2022-11-22 00:26:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:30,284 INFO L225 Difference]: With dead ends: 142 [2022-11-22 00:26:30,284 INFO L226 Difference]: Without dead ends: 142 [2022-11-22 00:26:30,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:26:30,285 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 231 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:30,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 303 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:26:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-22 00:26:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2022-11-22 00:26:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 137 states have internal predecessors, (151), 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) [2022-11-22 00:26:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2022-11-22 00:26:30,289 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 11 [2022-11-22 00:26:30,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:30,289 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2022-11-22 00:26:30,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2022-11-22 00:26:30,289 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2022-11-22 00:26:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:26:30,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:30,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:30,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:26:30,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:30,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash 754854528, now seen corresponding path program 1 times [2022-11-22 00:26:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:30,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722047098] [2022-11-22 00:26:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:30,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:30,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722047098] [2022-11-22 00:26:30,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722047098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:30,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:30,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 00:26:30,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507171450] [2022-11-22 00:26:30,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:30,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 00:26:30,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:30,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 00:26:30,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:26:30,732 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2022-11-22 00:26:31,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:31,374 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2022-11-22 00:26:31,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:26:31,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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 [2022-11-22 00:26:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:31,376 INFO L225 Difference]: With dead ends: 203 [2022-11-22 00:26:31,376 INFO L226 Difference]: Without dead ends: 203 [2022-11-22 00:26:31,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-22 00:26:31,377 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 301 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:31,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 500 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:26:31,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-22 00:26:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 125. [2022-11-22 00:26:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.4891304347826086) internal successors, (137), 124 states have internal predecessors, (137), 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) [2022-11-22 00:26:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2022-11-22 00:26:31,383 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 11 [2022-11-22 00:26:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:31,383 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2022-11-22 00:26:31,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2022-11-22 00:26:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2022-11-22 00:26:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 00:26:31,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:31,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:31,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:26:31,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:31,387 INFO L85 PathProgramCache]: Analyzing trace with hash 42463835, now seen corresponding path program 1 times [2022-11-22 00:26:31,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:31,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534829015] [2022-11-22 00:26:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:31,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:31,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:31,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534829015] [2022-11-22 00:26:31,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534829015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:31,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:31,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:26:31,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374591966] [2022-11-22 00:26:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:31,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:26:31,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:31,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:26:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:26:31,425 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) 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) [2022-11-22 00:26:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:31,500 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2022-11-22 00:26:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:26:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) 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 14 [2022-11-22 00:26:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:31,502 INFO L225 Difference]: With dead ends: 173 [2022-11-22 00:26:31,502 INFO L226 Difference]: Without dead ends: 173 [2022-11-22 00:26:31,503 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:26:31,503 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 39 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:31,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 206 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:26:31,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-22 00:26:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2022-11-22 00:26:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 105 states have (on average 1.438095238095238) internal successors, (151), 137 states have internal predecessors, (151), 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) [2022-11-22 00:26:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2022-11-22 00:26:31,509 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 14 [2022-11-22 00:26:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:31,509 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2022-11-22 00:26:31,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) 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) [2022-11-22 00:26:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2022-11-22 00:26:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 00:26:31,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:31,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:31,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:26:31,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2115560054, now seen corresponding path program 1 times [2022-11-22 00:26:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:31,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907433647] [2022-11-22 00:26:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:31,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:31,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:31,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907433647] [2022-11-22 00:26:31,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907433647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:31,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:31,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:26:31,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734299563] [2022-11-22 00:26:31,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:31,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:31,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:31,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:31,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:31,792 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-22 00:26:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:31,952 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2022-11-22 00:26:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:26:31,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2022-11-22 00:26:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:31,954 INFO L225 Difference]: With dead ends: 143 [2022-11-22 00:26:31,954 INFO L226 Difference]: Without dead ends: 143 [2022-11-22 00:26:31,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:26:31,955 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 8 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:31,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 396 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:26:31,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-22 00:26:31,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2022-11-22 00:26:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 140 states have internal predecessors, (154), 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) [2022-11-22 00:26:31,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2022-11-22 00:26:31,960 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 17 [2022-11-22 00:26:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:31,960 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2022-11-22 00:26:31,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-11-22 00:26:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2022-11-22 00:26:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 00:26:31,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:31,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:26:31,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 658823248, now seen corresponding path program 1 times [2022-11-22 00:26:31,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:31,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187289754] [2022-11-22 00:26:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:32,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:32,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187289754] [2022-11-22 00:26:32,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187289754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:32,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:32,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 00:26:32,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501410734] [2022-11-22 00:26:32,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:32,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 00:26:32,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 00:26:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:26:32,192 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-11-22 00:26:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:32,565 INFO L93 Difference]: Finished difference Result 220 states and 237 transitions. [2022-11-22 00:26:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:26:32,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 17 [2022-11-22 00:26:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:32,567 INFO L225 Difference]: With dead ends: 220 [2022-11-22 00:26:32,567 INFO L226 Difference]: Without dead ends: 220 [2022-11-22 00:26:32,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:26:32,568 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 296 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:32,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 444 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:26:32,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-22 00:26:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 145. [2022-11-22 00:26:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.4107142857142858) internal successors, (158), 144 states have internal predecessors, (158), 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) [2022-11-22 00:26:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2022-11-22 00:26:32,572 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 17 [2022-11-22 00:26:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:32,573 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2022-11-22 00:26:32,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2022-11-22 00:26:32,573 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2022-11-22 00:26:32,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 00:26:32,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:32,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:32,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:26:32,575 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:32,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1158449302, now seen corresponding path program 1 times [2022-11-22 00:26:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:32,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315939488] [2022-11-22 00:26:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:32,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:32,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:32,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315939488] [2022-11-22 00:26:32,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315939488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:32,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:32,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:26:32,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595940760] [2022-11-22 00:26:32,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:32,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:26:32,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:32,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:26:32,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:32,649 INFO L87 Difference]: Start difference. First operand 145 states and 158 transitions. Second operand has 5 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) [2022-11-22 00:26:32,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:32,796 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2022-11-22 00:26:32,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:26:32,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2022-11-22 00:26:32,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:32,797 INFO L225 Difference]: With dead ends: 145 [2022-11-22 00:26:32,798 INFO L226 Difference]: Without dead ends: 145 [2022-11-22 00:26:32,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:26:32,798 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 118 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:32,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 261 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:26:32,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-22 00:26:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-22 00:26:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 144 states have internal predecessors, (157), 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) [2022-11-22 00:26:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2022-11-22 00:26:32,803 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 18 [2022-11-22 00:26:32,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:32,803 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2022-11-22 00:26:32,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2022-11-22 00:26:32,804 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2022-11-22 00:26:32,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 00:26:32,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:32,804 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:26:32,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1300477052, now seen corresponding path program 1 times [2022-11-22 00:26:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:32,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333723475] [2022-11-22 00:26:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:32,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:33,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:33,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333723475] [2022-11-22 00:26:33,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333723475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:26:33,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858702250] [2022-11-22 00:26:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:33,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:26:33,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:26:33,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:26:33,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:26:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:33,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 00:26:33,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:26:33,304 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,322 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,349 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:26:33,361 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,403 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:26:33,419 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,543 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,546 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:33,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:26:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:33,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858702250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:26:33,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1734373443] [2022-11-22 00:26:33,699 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-22 00:26:33,700 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:26:33,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:26:33,710 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:26:33,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:26:33,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,776 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,807 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,821 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,830 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,855 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-22 00:26:33,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,869 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,903 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-22 00:26:33,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,940 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:33,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,962 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 23 [2022-11-22 00:26:33,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:33,982 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 23 [2022-11-22 00:26:34,537 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:26:36,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1734373443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:36,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:26:36,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 13 [2022-11-22 00:26:36,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738626974] [2022-11-22 00:26:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:36,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 00:26:36,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 00:26:36,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:26:36,572 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2022-11-22 00:26:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:37,258 INFO L93 Difference]: Finished difference Result 157 states and 169 transitions. [2022-11-22 00:26:37,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 00:26:37,259 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 21 [2022-11-22 00:26:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:37,263 INFO L225 Difference]: With dead ends: 157 [2022-11-22 00:26:37,263 INFO L226 Difference]: Without dead ends: 157 [2022-11-22 00:26:37,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:26:37,265 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 33 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:37,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 249 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:26:37,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-22 00:26:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2022-11-22 00:26:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 118 states have (on average 1.3898305084745763) internal successors, (164), 150 states have internal predecessors, (164), 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) [2022-11-22 00:26:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2022-11-22 00:26:37,271 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 21 [2022-11-22 00:26:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:37,273 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2022-11-22 00:26:37,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2022-11-22 00:26:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2022-11-22 00:26:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 00:26:37,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:37,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:26:37,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:26:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:26:37,487 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1300475953, now seen corresponding path program 1 times [2022-11-22 00:26:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:37,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283706076] [2022-11-22 00:26:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:37,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:37,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:37,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283706076] [2022-11-22 00:26:37,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283706076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:26:37,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727318211] [2022-11-22 00:26:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:37,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:26:37,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:26:37,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:26:37,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:26:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:37,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 00:26:37,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:26:37,738 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-22 00:26:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:37,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:26:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:37,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727318211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:26:37,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927688308] [2022-11-22 00:26:37,800 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-22 00:26:37,800 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:26:37,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:26:37,801 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:26:37,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:26:37,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,825 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:37,839 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:37,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,854 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:37,863 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:37,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,883 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:37,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,898 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-22 00:26:37,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,910 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-22 00:26:37,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,939 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:37,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,968 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 23 [2022-11-22 00:26:37,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:37,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:38,000 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 23 [2022-11-22 00:26:38,385 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:26:40,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1927688308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:40,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:26:40,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [3, 3, 3] total 14 [2022-11-22 00:26:40,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396583589] [2022-11-22 00:26:40,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:40,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:26:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:26:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:26:40,330 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2022-11-22 00:26:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:41,007 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2022-11-22 00:26:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:26:41,008 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 21 [2022-11-22 00:26:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:41,009 INFO L225 Difference]: With dead ends: 152 [2022-11-22 00:26:41,009 INFO L226 Difference]: Without dead ends: 137 [2022-11-22 00:26:41,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-22 00:26:41,010 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 35 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:41,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 294 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:26:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-22 00:26:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-11-22 00:26:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 104 states have (on average 1.4230769230769231) internal successors, (148), 136 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) [2022-11-22 00:26:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2022-11-22 00:26:41,014 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 21 [2022-11-22 00:26:41,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:41,014 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2022-11-22 00:26:41,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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) [2022-11-22 00:26:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2022-11-22 00:26:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 00:26:41,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:41,015 INFO L195 NwaCegarLoop]: 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] [2022-11-22 00:26:41,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:26:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 00:26:41,216 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 73 more)] === [2022-11-22 00:26:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash -516802388, now seen corresponding path program 1 times [2022-11-22 00:26:41,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:41,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2177805] [2022-11-22 00:26:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:41,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:41,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2177805] [2022-11-22 00:26:41,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2177805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:26:41,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602298423] [2022-11-22 00:26:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:41,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:26:41,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:26:41,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:26:41,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_227d8eba-5de5-4eee-845b-acb5e663545a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:26:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:41,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-22 00:26:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:26:41,778 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:41,847 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:26:41,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2022-11-22 00:26:41,888 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:41,976 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:26:41,977 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 28 [2022-11-22 00:26:42,039 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:26:42,039 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 28 [2022-11-22 00:26:42,070 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:26:42,070 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 28 [2022-11-22 00:26:42,172 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 12 [2022-11-22 00:26:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:42,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:26:42,209 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_494 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| v_ArrVal_494) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-11-22 00:26:42,249 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_494 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_494) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-11-22 00:26:42,257 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_494 (Array Int Int))) (not (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_492))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_494)) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2022-11-22 00:26:42,317 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:26:42,317 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,337 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:26:42,337 INFO L350 Elim1Store]: Elim1 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 141 treesize of output 128 [2022-11-22 00:26:42,350 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:26:42,350 INFO L350 Elim1Store]: Elim1 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 112 treesize of output 111 [2022-11-22 00:26:42,366 INFO L350 Elim1Store]: Elim1 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 102 treesize of output 98 [2022-11-22 00:26:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:26:42,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602298423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:26:42,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [277256420] [2022-11-22 00:26:42,625 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-22 00:26:42,626 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:26:42,626 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:26:42,626 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:26:42,627 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:26:42,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,656 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,677 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,685 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,694 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,713 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,725 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-22 00:26:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,737 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 20 [2022-11-22 00:26:42,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,760 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 23 [2022-11-22 00:26:42,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,772 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,787 INFO L350 Elim1Store]: Elim1 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 36 treesize of output 23 [2022-11-22 00:26:42,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,827 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,853 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 28 treesize of output 23 [2022-11-22 00:26:42,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,866 INFO L350 Elim1Store]: Elim1 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 23 [2022-11-22 00:26:42,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,879 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:42,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:42,926 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:26:42,927 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 172 treesize of output 125 [2022-11-22 00:26:42,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,942 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 94 [2022-11-22 00:26:42,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,962 INFO L350 Elim1Store]: Elim1 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 63 treesize of output 33 [2022-11-22 00:26:42,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:42,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,018 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-22 00:26:43,019 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,050 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:26:43,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 107 [2022-11-22 00:26:43,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,079 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-22 00:26:43,079 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 76 [2022-11-22 00:26:43,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,138 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 00:26:43,138 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 150 treesize of output 110 [2022-11-22 00:26:43,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,166 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-22 00:26:43,166 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 67 [2022-11-22 00:26:43,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,218 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:43,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,333 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:43,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,376 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 42 treesize of output 43 [2022-11-22 00:26:43,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,391 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 42 treesize of output 43 [2022-11-22 00:26:43,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,413 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:43,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,490 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-22 00:26:43,491 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 2 case distinctions, treesize of input 192 treesize of output 151 [2022-11-22 00:26:43,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 114 [2022-11-22 00:26:43,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,537 INFO L350 Elim1Store]: Elim1 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 82 treesize of output 55 [2022-11-22 00:26:43,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,680 INFO L321 Elim1Store]: treesize reduction 192, result has 16.5 percent of original size [2022-11-22 00:26:43,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 320 treesize of output 200 [2022-11-22 00:26:43,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,720 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:26:43,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 96 [2022-11-22 00:26:43,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,747 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:43,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,801 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-11-22 00:26:43,802 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 56 [2022-11-22 00:26:43,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:26:43,833 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 00:26:43,833 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 5 case distinctions, treesize of input 150 treesize of output 110 [2022-11-22 00:26:43,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:26:43,880 INFO L321 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2022-11-22 00:26:43,880 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 79 [2022-11-22 00:26:44,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 00:26:44,020 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 00:26:44,054 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:44,059 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:44,066 INFO L350 Elim1Store]: Elim1 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 [2022-11-22 00:26:44,116 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-22 00:26:44,117 INFO L350 Elim1Store]: Elim1 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 157 treesize of output 135 [2022-11-22 00:26:44,143 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 00:26:44,143 INFO L350 Elim1Store]: Elim1 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 99 treesize of output 69 [2022-11-22 00:26:44,157 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 1 [2022-11-22 00:26:45,093 INFO L321 Elim1Store]: treesize reduction 324, result has 51.9 percent of original size [2022-11-22 00:26:45,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 389 treesize of output 629 [2022-11-22 00:26:45,957 INFO L321 Elim1Store]: treesize reduction 268, result has 52.2 percent of original size [2022-11-22 00:26:45,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 463 treesize of output 653 [2022-11-22 00:28:24,875 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 1465 DAG size of output: 1465 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)