./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/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 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 --- 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 01:21:04,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:21:04,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:21:04,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:21:04,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:21:04,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:21:04,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:21:04,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:21:04,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:21:04,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:21:04,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:21:04,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:21:04,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:21:04,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:21:04,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:21:04,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:21:04,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:21:04,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:21:04,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:21:04,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:21:04,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:21:04,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:21:04,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:21:04,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:21:04,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:21:04,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:21:04,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:21:04,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:21:04,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:21:04,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:21:04,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:21:04,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:21:04,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:21:04,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:21:04,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:21:04,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:21:04,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:21:04,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:21:04,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:21:04,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:21:04,725 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:21:04,726 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 01:21:04,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:21:04,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:21:04,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:21:04,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:21:04,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:21:04,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:21:04,777 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:21:04,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:21:04,778 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:21:04,778 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:21:04,779 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:21:04,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:21:04,780 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:21:04,780 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:21:04,781 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:21:04,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:21:04,782 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:21:04,782 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:21:04,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:21:04,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:21:04,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:21:04,784 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:21:04,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:21:04,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:21:04,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:21:04,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:21:04,786 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:21:04,786 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:21:04,787 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 01:21:04,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:21:04,788 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:21:04,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:21:04,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:21:04,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:21:04,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:21:04,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:21:04,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:21:04,790 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:21:04,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:21:04,791 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:21:04,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:21:04,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:21:04,792 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97c87a4be2f33468a224d89594f96c367f5837bb79771cd5155d22e1299d7831 [2022-11-22 01:21:05,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:21:05,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:21:05,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:21:05,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:21:05,163 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:21:05,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2022-11-22 01:21:08,774 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:21:09,134 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:21:09,139 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2022-11-22 01:21:09,153 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/data/286a1ce0c/810733b4f1224f4088d035bbcb843477/FLAG26c1f805a [2022-11-22 01:21:09,179 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/data/286a1ce0c/810733b4f1224f4088d035bbcb843477 [2022-11-22 01:21:09,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:21:09,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:21:09,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:21:09,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:21:09,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:21:09,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f17069a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09, skipping insertion in model container [2022-11-22 01:21:09,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:21:09,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:21:09,665 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2022-11-22 01:21:09,673 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2022-11-22 01:21:09,678 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2022-11-22 01:21:09,679 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2022-11-22 01:21:09,680 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2022-11-22 01:21:09,681 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2022-11-22 01:21:09,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:21:09,697 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:21:09,737 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2022-11-22 01:21:09,739 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2022-11-22 01:21:09,744 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2022-11-22 01:21:09,745 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2022-11-22 01:21:09,747 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2022-11-22 01:21:09,748 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_213b78ee-92d9-4c80-8fc2-132c30f37cbd/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2022-11-22 01:21:09,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:21:09,781 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:21:09,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09 WrapperNode [2022-11-22 01:21:09,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:21:09,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:21:09,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:21:09,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:21:09,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,840 INFO L138 Inliner]: procedures = 119, calls = 45, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 197 [2022-11-22 01:21:09,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:21:09,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:21:09,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:21:09,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:21:09,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,883 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:21:09,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:21:09,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:21:09,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:21:09,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (1/1) ... [2022-11-22 01:21:09,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:21:09,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:21:09,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:21:09,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:21:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:21:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:21:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:21:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:21:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:21:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:21:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:21:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:21:10,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:21:10,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:21:10,177 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:21:10,192 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:21:10,845 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:21:10,960 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:21:10,963 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-22 01:21:10,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:21:10 BoogieIcfgContainer [2022-11-22 01:21:10,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:21:10,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:21:10,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:21:10,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:21:10,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:21:09" (1/3) ... [2022-11-22 01:21:10,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2055c978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:21:10, skipping insertion in model container [2022-11-22 01:21:10,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:21:09" (2/3) ... [2022-11-22 01:21:10,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2055c978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:21:10, skipping insertion in model container [2022-11-22 01:21:10,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:21:10" (3/3) ... [2022-11-22 01:21:10,984 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2022-11-22 01:21:11,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:21:11,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-11-22 01:21:11,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:21:11,097 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;@73940cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:21:11,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-22 01:21:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 74 states have (on average 2.5135135135135136) internal successors, (186), 154 states have internal predecessors, (186), 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 01:21:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:21:11,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:11,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:21:11,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:11,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:11,123 INFO L85 PathProgramCache]: Analyzing trace with hash 12342, now seen corresponding path program 1 times [2022-11-22 01:21:11,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:11,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216213866] [2022-11-22 01:21:11,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:11,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:11,408 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 01:21:11,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:11,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216213866] [2022-11-22 01:21:11,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216213866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:11,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:11,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:21:11,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217227390] [2022-11-22 01:21:11,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:11,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:11,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:11,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:11,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,457 INFO L87 Difference]: Start difference. First operand has 155 states, 74 states have (on average 2.5135135135135136) internal successors, (186), 154 states have internal predecessors, (186), 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 01:21:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:11,680 INFO L93 Difference]: Finished difference Result 156 states and 165 transitions. [2022-11-22 01:21:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:11,683 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 01:21:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:11,695 INFO L225 Difference]: With dead ends: 156 [2022-11-22 01:21:11,696 INFO L226 Difference]: Without dead ends: 154 [2022-11-22 01:21:11,698 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 01:21:11,702 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 148 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:11,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 86 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:21:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-22 01:21:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 151. [2022-11-22 01:21:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 74 states have (on average 2.1621621621621623) internal successors, (160), 150 states have internal predecessors, (160), 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 01:21:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2022-11-22 01:21:11,765 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 2 [2022-11-22 01:21:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:11,767 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2022-11-22 01:21:11,768 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 01:21:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2022-11-22 01:21:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:21:11,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:11,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:21:11,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:21:11,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash 12343, now seen corresponding path program 1 times [2022-11-22 01:21:11,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:11,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423893428] [2022-11-22 01:21:11,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:11,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:11,955 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 01:21:11,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:11,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423893428] [2022-11-22 01:21:11,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423893428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:11,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:11,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:21:11,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412772405] [2022-11-22 01:21:11,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:11,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:11,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:11,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:11,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,961 INFO L87 Difference]: Start difference. First operand 151 states and 160 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 01:21:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:12,186 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2022-11-22 01:21:12,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:12,188 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 01:21:12,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:12,191 INFO L225 Difference]: With dead ends: 151 [2022-11-22 01:21:12,195 INFO L226 Difference]: Without dead ends: 151 [2022-11-22 01:21:12,196 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 01:21:12,197 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 144 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:12,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 86 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:21:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-22 01:21:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2022-11-22 01:21:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 74 states have (on average 2.1216216216216215) internal successors, (157), 147 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 01:21:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 157 transitions. [2022-11-22 01:21:12,219 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 157 transitions. Word has length 2 [2022-11-22 01:21:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 157 transitions. [2022-11-22 01:21:12,220 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 01:21:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 157 transitions. [2022-11-22 01:21:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:21:12,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:12,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:21:12,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1141734222, now seen corresponding path program 1 times [2022-11-22 01:21:12,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:12,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387453566] [2022-11-22 01:21:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:12,468 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 01:21:12,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:12,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387453566] [2022-11-22 01:21:12,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387453566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:12,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:12,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:12,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105691902] [2022-11-22 01:21:12,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:12,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:21:12,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:12,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:21:12,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:21:12,472 INFO L87 Difference]: Start difference. First operand 148 states and 157 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 01:21:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:12,772 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2022-11-22 01:21:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:21:12,772 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 01:21:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:12,778 INFO L225 Difference]: With dead ends: 152 [2022-11-22 01:21:12,778 INFO L226 Difference]: Without dead ends: 152 [2022-11-22 01:21:12,779 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 01:21:12,784 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 251 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:12,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 61 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:21:12,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-22 01:21:12,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 143. [2022-11-22 01:21:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 87 states have (on average 1.8735632183908046) internal successors, (163), 142 states have internal predecessors, (163), 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 01:21:12,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2022-11-22 01:21:12,815 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 7 [2022-11-22 01:21:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:12,816 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2022-11-22 01:21:12,817 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 01:21:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2022-11-22 01:21:12,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:21:12,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:12,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:21:12,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1141734223, now seen corresponding path program 1 times [2022-11-22 01:21:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:12,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683978066] [2022-11-22 01:21:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:12,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:13,296 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 01:21:13,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:13,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683978066] [2022-11-22 01:21:13,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683978066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:13,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:13,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:21:13,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397096784] [2022-11-22 01:21:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:13,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:21:13,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:21:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:21:13,305 INFO L87 Difference]: Start difference. First operand 143 states and 163 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 01:21:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:13,821 INFO L93 Difference]: Finished difference Result 215 states and 236 transitions. [2022-11-22 01:21:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:21:13,822 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 01:21:13,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:13,823 INFO L225 Difference]: With dead ends: 215 [2022-11-22 01:21:13,823 INFO L226 Difference]: Without dead ends: 215 [2022-11-22 01:21:13,824 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 01:21:13,825 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:13,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 121 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:21:13,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-22 01:21:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 185. [2022-11-22 01:21:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 129 states have (on average 1.751937984496124) internal successors, (226), 184 states have internal predecessors, (226), 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 01:21:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2022-11-22 01:21:13,837 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 7 [2022-11-22 01:21:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:13,838 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2022-11-22 01:21:13,838 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 01:21:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2022-11-22 01:21:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:21:13,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:13,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:21:13,840 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:13,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1989906968, now seen corresponding path program 1 times [2022-11-22 01:21:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:13,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059179505] [2022-11-22 01:21:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:13,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:13,881 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 01:21:13,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:13,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059179505] [2022-11-22 01:21:13,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059179505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:13,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:13,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:13,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345696409] [2022-11-22 01:21:13,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:13,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:13,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:13,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:13,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:13,885 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:13,963 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2022-11-22 01:21:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:13,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 01:21:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:13,967 INFO L225 Difference]: With dead ends: 220 [2022-11-22 01:21:13,967 INFO L226 Difference]: Without dead ends: 220 [2022-11-22 01:21:13,968 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 01:21:13,969 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 98 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:13,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 169 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-22 01:21:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 187. [2022-11-22 01:21:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 131 states have (on average 1.7328244274809161) internal successors, (227), 186 states have internal predecessors, (227), 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 01:21:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2022-11-22 01:21:13,980 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 9 [2022-11-22 01:21:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:13,981 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2022-11-22 01:21:13,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2022-11-22 01:21:13,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:21:13,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:13,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:13,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:21:13,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:13,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1990247744, now seen corresponding path program 1 times [2022-11-22 01:21:13,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:13,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806218796] [2022-11-22 01:21:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:13,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:14,294 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 01:21:14,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:14,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806218796] [2022-11-22 01:21:14,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806218796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:14,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:14,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:21:14,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125641940] [2022-11-22 01:21:14,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:14,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:21:14,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:14,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:21:14,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:14,300 INFO L87 Difference]: Start difference. First operand 187 states and 227 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 01:21:14,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:14,590 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-11-22 01:21:14,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:21:14,591 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 01:21:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:14,592 INFO L225 Difference]: With dead ends: 186 [2022-11-22 01:21:14,592 INFO L226 Difference]: Without dead ends: 186 [2022-11-22 01:21:14,593 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 01:21:14,594 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 5 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:14,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 297 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:21:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-22 01:21:14,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-11-22 01:21:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 131 states have (on average 1.717557251908397) internal successors, (225), 185 states have internal predecessors, (225), 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 01:21:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 225 transitions. [2022-11-22 01:21:14,602 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 225 transitions. Word has length 9 [2022-11-22 01:21:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:14,602 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 225 transitions. [2022-11-22 01:21:14,603 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 01:21:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 225 transitions. [2022-11-22 01:21:14,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:21:14,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:14,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:14,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:21:14,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1990247743, now seen corresponding path program 1 times [2022-11-22 01:21:14,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:14,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697441010] [2022-11-22 01:21:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:14,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:14,750 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 01:21:14,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:14,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697441010] [2022-11-22 01:21:14,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697441010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:14,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:14,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:21:14,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915076373] [2022-11-22 01:21:14,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:21:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:21:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:14,753 INFO L87 Difference]: Start difference. First operand 186 states and 225 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 01:21:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:15,028 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2022-11-22 01:21:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:21:15,029 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 01:21:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:15,030 INFO L225 Difference]: With dead ends: 185 [2022-11-22 01:21:15,030 INFO L226 Difference]: Without dead ends: 185 [2022-11-22 01:21:15,031 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 01:21:15,032 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 4 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:15,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 319 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:21:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-22 01:21:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-22 01:21:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 131 states have (on average 1.702290076335878) internal successors, (223), 184 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 223 transitions. [2022-11-22 01:21:15,038 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 223 transitions. Word has length 9 [2022-11-22 01:21:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:15,039 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 223 transitions. [2022-11-22 01:21:15,039 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 01:21:15,039 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 223 transitions. [2022-11-22 01:21:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:21:15,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:15,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:15,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:21:15,040 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:15,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1367973544, now seen corresponding path program 1 times [2022-11-22 01:21:15,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:15,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023352787] [2022-11-22 01:21:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:15,360 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 01:21:15,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:15,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023352787] [2022-11-22 01:21:15,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023352787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:15,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:15,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:21:15,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591888711] [2022-11-22 01:21:15,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:15,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:21:15,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:15,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:21:15,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:21:15,363 INFO L87 Difference]: Start difference. First operand 185 states and 223 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 01:21:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:15,747 INFO L93 Difference]: Finished difference Result 189 states and 223 transitions. [2022-11-22 01:21:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:21:15,748 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 01:21:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:15,749 INFO L225 Difference]: With dead ends: 189 [2022-11-22 01:21:15,749 INFO L226 Difference]: Without dead ends: 189 [2022-11-22 01:21:15,750 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 01:21:15,751 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 246 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:15,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 158 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:21:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-22 01:21:15,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 184. [2022-11-22 01:21:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 131 states have (on average 1.6946564885496183) internal successors, (222), 183 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:21:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 222 transitions. [2022-11-22 01:21:15,756 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 222 transitions. Word has length 11 [2022-11-22 01:21:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:15,757 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 222 transitions. [2022-11-22 01:21:15,757 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 01:21:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 222 transitions. [2022-11-22 01:21:15,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:21:15,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:15,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:21:15,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:15,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:15,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1367973545, now seen corresponding path program 1 times [2022-11-22 01:21:15,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:15,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483686827] [2022-11-22 01:21:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:16,299 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 01:21:16,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:16,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483686827] [2022-11-22 01:21:16,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483686827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:16,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:16,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:21:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364559363] [2022-11-22 01:21:16,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:16,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 01:21:16,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 01:21:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:21:16,303 INFO L87 Difference]: Start difference. First operand 184 states and 222 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 01:21:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:17,066 INFO L93 Difference]: Finished difference Result 183 states and 217 transitions. [2022-11-22 01:21:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:21:17,067 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 01:21:17,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:17,068 INFO L225 Difference]: With dead ends: 183 [2022-11-22 01:21:17,068 INFO L226 Difference]: Without dead ends: 183 [2022-11-22 01:21:17,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:21:17,069 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 237 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:17,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 276 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:21:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-22 01:21:17,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2022-11-22 01:21:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 125 states have (on average 1.68) internal successors, (210), 171 states have internal predecessors, (210), 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 01:21:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2022-11-22 01:21:17,075 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 11 [2022-11-22 01:21:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:17,076 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2022-11-22 01:21:17,076 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 01:21:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2022-11-22 01:21:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 01:21:17,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:17,077 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:17,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:21:17,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash -77941124, now seen corresponding path program 1 times [2022-11-22 01:21:17,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:17,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174863304] [2022-11-22 01:21:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:21:17,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:17,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174863304] [2022-11-22 01:21:17,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174863304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:17,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:17,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:17,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437388781] [2022-11-22 01:21:17,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:17,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:21:17,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:17,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:21:17,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:21:17,163 INFO L87 Difference]: Start difference. First operand 172 states and 210 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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 01:21:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:17,340 INFO L93 Difference]: Finished difference Result 201 states and 220 transitions. [2022-11-22 01:21:17,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:21:17,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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 18 [2022-11-22 01:21:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:17,341 INFO L225 Difference]: With dead ends: 201 [2022-11-22 01:21:17,341 INFO L226 Difference]: Without dead ends: 201 [2022-11-22 01:21:17,342 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 01:21:17,342 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 247 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:17,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 147 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:21:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-22 01:21:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2022-11-22 01:21:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 124 states have (on average 1.6612903225806452) internal successors, (206), 169 states have internal predecessors, (206), 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 01:21:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 206 transitions. [2022-11-22 01:21:17,347 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 206 transitions. Word has length 18 [2022-11-22 01:21:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:17,348 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 206 transitions. [2022-11-22 01:21:17,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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 01:21:17,348 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 206 transitions. [2022-11-22 01:21:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:21:17,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:17,349 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] [2022-11-22 01:21:17,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:21:17,350 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2022-11-22 01:21:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1462926702, now seen corresponding path program 1 times [2022-11-22 01:21:17,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:17,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030821866] [2022-11-22 01:21:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:17,991 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 01:21:17,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:17,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030821866] [2022-11-22 01:21:17,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030821866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:21:17,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048000649] [2022-11-22 01:21:17,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:17,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:21:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:21:17,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:21:18,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_213b78ee-92d9-4c80-8fc2-132c30f37cbd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:21:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:18,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-22 01:21:18,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:21:18,264 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 01:21:18,427 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:21:18,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-22 01:21:18,516 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 01:21:18,658 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 01:21:18,659 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 28 treesize of output 29 [2022-11-22 01:21:18,749 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 01:21:18,750 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 31 treesize of output 29 [2022-11-22 01:21:18,806 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 01:21:18,807 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 28 treesize of output 29 [2022-11-22 01:21:19,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:21:19,024 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-22 01:21:19,071 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 01:21:19,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:21:19,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:21:19,992 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 38 treesize of output 31 [2022-11-22 01:21:20,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:21:20,013 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 252 treesize of output 227 [2022-11-22 01:21:20,031 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 212 treesize of output 204 [2022-11-22 01:21:20,052 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:21:20,052 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 204 treesize of output 196 [2022-11-22 01:21:26,240 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 01:21:26,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048000649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:21:26,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515232930] [2022-11-22 01:21:26,261 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 01:21:26,261 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:21:26,266 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:21:26,272 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:21:26,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:21:26,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,327 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 01:21:26,348 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 01:21:26,356 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 01:21:26,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,380 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 01:21:26,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,431 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 01:21:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,445 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 01:21:26,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,458 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 01:21:26,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,486 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 01:21:26,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,508 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 01:21:26,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,522 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 01:21:26,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,587 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 01:21:26,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,628 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 01:21:26,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,644 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 01:21:26,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,662 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 01:21:26,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:21:26,735 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 01:21:26,735 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 01:21:26,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,755 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 01:21:26,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,775 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 01:21:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,862 INFO L321 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-22 01:21:26,862 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 01:21:26,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:21:26,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:21:26,909 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:21:26,914 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 01:21:26,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:26,951 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 01:21:26,952 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 72 treesize of output 64 [2022-11-22 01:21:27,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,010 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 01:21:27,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,034 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 50 treesize of output 43 [2022-11-22 01:21:27,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,071 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 50 treesize of output 43 [2022-11-22 01:21:27,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,158 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 01:21:27,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,229 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 01:21:27,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,253 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 01:21:27,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:21:27,282 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 01:21:27,378 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-22 01:21:27,379 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 114 treesize of output 84 [2022-11-22 01:21:27,422 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-22 01:21:27,423 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 106 treesize of output 96 [2022-11-22 01:21:27,438 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 01:21:27,586 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 01:21:29,127 INFO L321 Elim1Store]: treesize reduction 172, result has 75.3 percent of original size [2022-11-22 01:21:29,129 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 384 treesize of output 800 [2022-11-22 01:21:30,609 INFO L321 Elim1Store]: treesize reduction 140, result has 75.4 percent of original size [2022-11-22 01:21:30,610 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 538 treesize of output 848