./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/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_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- 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 01:08:25,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:08:25,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:08:25,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:08:25,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:08:25,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:08:25,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:08:25,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:08:25,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:08:25,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:08:25,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:08:25,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:08:25,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:08:25,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:08:25,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:08:25,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:08:25,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:08:25,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:08:25,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:08:25,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:08:25,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:08:25,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:08:25,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:08:25,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:08:25,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:08:25,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:08:25,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:08:25,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:08:25,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:08:25,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:08:25,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:08:25,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:08:25,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:08:25,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:08:25,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:08:25,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:08:25,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:08:25,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:08:25,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:08:25,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:08:25,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:08:25,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2022-11-22 01:08:25,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:08:25,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:08:25,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:08:25,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:08:25,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:08:25,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:08:25,723 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:08:25,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:08:25,723 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:08:25,724 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:08:25,724 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:08:25,724 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:08:25,724 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:08:25,724 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:08:25,725 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:08:25,725 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:08:25,725 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:08:25,725 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:08:25,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 01:08:25,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 01:08:25,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:08:25,726 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:08:25,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:08:25,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:08:25,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:08:25,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:08:25,727 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 01:08:25,727 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 01:08:25,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:08:25,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:08:25,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:08:25,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:08:25,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:08:25,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:08:25,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:08:25,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:08:25,729 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:08:25,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:08:25,729 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:08:25,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:08:25,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:08:25,730 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_463c264d-67f8-4e7a-9839-55fc56afe835/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2022-11-22 01:08:26,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:08:26,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:08:26,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:08:26,085 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:08:26,085 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:08:26,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-11-22 01:08:29,184 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:08:29,532 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:08:29,532 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2022-11-22 01:08:29,544 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/data/6651cb0a4/e9d8502e406b4ee5a7d858d435ee3be1/FLAG1ce50b423 [2022-11-22 01:08:29,561 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/data/6651cb0a4/e9d8502e406b4ee5a7d858d435ee3be1 [2022-11-22 01:08:29,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:08:29,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:08:29,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:08:29,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:08:29,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:08:29,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:29" (1/1) ... [2022-11-22 01:08:29,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6336cca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:29, skipping insertion in model container [2022-11-22 01:08:29,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:29" (1/1) ... [2022-11-22 01:08:29,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:08:29,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:08:29,923 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_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-11-22 01:08:29,928 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_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-11-22 01:08:29,929 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_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-11-22 01:08:29,931 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-11-22 01:08:29,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:08:29,945 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:08:30,018 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_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2022-11-22 01:08:30,019 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_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2022-11-22 01:08:30,021 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_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2022-11-22 01:08:30,024 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_463c264d-67f8-4e7a-9839-55fc56afe835/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2022-11-22 01:08:30,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:08:30,066 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:08:30,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30 WrapperNode [2022-11-22 01:08:30,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:08:30,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:08:30,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:08:30,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:08:30,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,145 INFO L138 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2022-11-22 01:08:30,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:08:30,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:08:30,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:08:30,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:08:30,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,199 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:08:30,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:08:30,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:08:30,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:08:30,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (1/1) ... [2022-11-22 01:08:30,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:08:30,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:30,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:08:30,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:08:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:08:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:08:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:08:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:08:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:08:30,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:08:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:08:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:08:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:08:30,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:08:30,399 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:08:30,401 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:08:30,891 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:08:30,955 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:08:30,956 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-22 01:08:30,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:30 BoogieIcfgContainer [2022-11-22 01:08:30,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:08:30,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:08:30,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:08:30,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:08:30,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:29" (1/3) ... [2022-11-22 01:08:30,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3893cfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:30, skipping insertion in model container [2022-11-22 01:08:30,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:30" (2/3) ... [2022-11-22 01:08:30,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3893cfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:30, skipping insertion in model container [2022-11-22 01:08:30,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:30" (3/3) ... [2022-11-22 01:08:30,970 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2022-11-22 01:08:30,991 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:08:30,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-11-22 01:08:31,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:08:31,050 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;@42b740d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:08:31,050 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-22 01:08:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 117 states have internal predecessors, (136), 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 01:08:31,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:08:31,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:31,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:08:31,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:31,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash 8374, now seen corresponding path program 1 times [2022-11-22 01:08:31,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:31,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686679931] [2022-11-22 01:08:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:31,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:31,269 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 01:08:31,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:31,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686679931] [2022-11-22 01:08:31,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686679931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:31,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:31,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:08:31,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75747659] [2022-11-22 01:08:31,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:31,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:31,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:31,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:31,312 INFO L87 Difference]: Start difference. First operand has 118 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 117 states have internal predecessors, (136), 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 01:08:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:31,571 INFO L93 Difference]: Finished difference Result 144 states and 151 transitions. [2022-11-22 01:08:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:31,575 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 01:08:31,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:31,600 INFO L225 Difference]: With dead ends: 144 [2022-11-22 01:08:31,600 INFO L226 Difference]: Without dead ends: 143 [2022-11-22 01:08:31,604 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 01:08:31,607 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 102 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:31,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 80 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-22 01:08:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 119. [2022-11-22 01:08:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 60 states have (on average 2.1166666666666667) internal successors, (127), 118 states have internal predecessors, (127), 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 01:08:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2022-11-22 01:08:31,681 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 2 [2022-11-22 01:08:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:31,682 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2022-11-22 01:08:31,682 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 01:08:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2022-11-22 01:08:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:08:31,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:31,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:08:31,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:08:31,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:31,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash 8375, now seen corresponding path program 1 times [2022-11-22 01:08:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:31,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703769258] [2022-11-22 01:08:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:31,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:31,829 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 01:08:31,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:31,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703769258] [2022-11-22 01:08:31,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703769258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:31,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:31,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:08:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738475645] [2022-11-22 01:08:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:31,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:31,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:31,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:31,840 INFO L87 Difference]: Start difference. First operand 119 states and 127 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 01:08:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:31,989 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2022-11-22 01:08:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:31,993 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 01:08:31,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:31,996 INFO L225 Difference]: With dead ends: 116 [2022-11-22 01:08:31,997 INFO L226 Difference]: Without dead ends: 116 [2022-11-22 01:08:31,998 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 01:08:32,001 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 113 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:32,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 60 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-22 01:08:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-22 01:08:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 60 states have (on average 2.05) internal successors, (123), 115 states have internal predecessors, (123), 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 01:08:32,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2022-11-22 01:08:32,020 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 2 [2022-11-22 01:08:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:32,020 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2022-11-22 01:08:32,021 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 01:08:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2022-11-22 01:08:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:08:32,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:32,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:08:32,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:08:32,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:32,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:32,024 INFO L85 PathProgramCache]: Analyzing trace with hash 8054028, now seen corresponding path program 1 times [2022-11-22 01:08:32,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:32,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605327851] [2022-11-22 01:08:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:32,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:32,113 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 01:08:32,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:32,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605327851] [2022-11-22 01:08:32,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605327851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:32,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:32,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:08:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898581106] [2022-11-22 01:08:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:32,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:32,116 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 01:08:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:32,233 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2022-11-22 01:08:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-22 01:08:32,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:32,234 INFO L225 Difference]: With dead ends: 113 [2022-11-22 01:08:32,234 INFO L226 Difference]: Without dead ends: 113 [2022-11-22 01:08:32,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:32,236 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 91 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:32,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 66 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-22 01:08:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2022-11-22 01:08:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 61 states have (on average 1.9508196721311475) internal successors, (119), 110 states have internal predecessors, (119), 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 01:08:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2022-11-22 01:08:32,243 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 4 [2022-11-22 01:08:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:32,243 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2022-11-22 01:08:32,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 01:08:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2022-11-22 01:08:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 01:08:32,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:32,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 01:08:32,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:08:32,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:32,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:32,245 INFO L85 PathProgramCache]: Analyzing trace with hash 8054029, now seen corresponding path program 1 times [2022-11-22 01:08:32,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:32,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429526218] [2022-11-22 01:08:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:32,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:32,393 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 01:08:32,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429526218] [2022-11-22 01:08:32,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429526218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:32,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:32,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:08:32,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251416517] [2022-11-22 01:08:32,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:32,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:32,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:32,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:32,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:32,396 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 01:08:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:32,525 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2022-11-22 01:08:32,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:32,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-22 01:08:32,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:32,527 INFO L225 Difference]: With dead ends: 126 [2022-11-22 01:08:32,527 INFO L226 Difference]: Without dead ends: 126 [2022-11-22 01:08:32,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:32,528 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 89 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:32,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 74 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-22 01:08:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2022-11-22 01:08:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 66 states have (on average 1.8484848484848484) internal successors, (122), 113 states have internal predecessors, (122), 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 01:08:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2022-11-22 01:08:32,535 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 4 [2022-11-22 01:08:32,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:32,535 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2022-11-22 01:08:32,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 01:08:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2022-11-22 01:08:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:08:32,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:32,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:32,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:08:32,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:32,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:32,538 INFO L85 PathProgramCache]: Analyzing trace with hash -812908213, now seen corresponding path program 1 times [2022-11-22 01:08:32,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:32,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21550413] [2022-11-22 01:08:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:32,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:32,756 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 01:08:32,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:32,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21550413] [2022-11-22 01:08:32,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21550413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:32,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:32,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:08:32,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006745216] [2022-11-22 01:08:32,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:32,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:08:32,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:08:32,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:08:32,766 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:32,958 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2022-11-22 01:08:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:08:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:08:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:32,960 INFO L225 Difference]: With dead ends: 116 [2022-11-22 01:08:32,960 INFO L226 Difference]: Without dead ends: 116 [2022-11-22 01:08:32,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:32,968 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 139 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:32,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 59 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:32,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-22 01:08:32,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105. [2022-11-22 01:08:32,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 104 states have internal predecessors, (115), 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 01:08:32,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2022-11-22 01:08:32,980 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 8 [2022-11-22 01:08:32,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:32,980 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2022-11-22 01:08:32,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:32,980 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2022-11-22 01:08:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:08:32,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:32,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:32,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:08:32,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:32,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:32,982 INFO L85 PathProgramCache]: Analyzing trace with hash -812908212, now seen corresponding path program 1 times [2022-11-22 01:08:32,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:32,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372132765] [2022-11-22 01:08:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:32,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:33,230 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 01:08:33,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:33,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372132765] [2022-11-22 01:08:33,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372132765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:33,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:33,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:08:33,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409082138] [2022-11-22 01:08:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:33,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:08:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:08:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:08:33,233 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:33,411 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2022-11-22 01:08:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:08:33,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 01:08:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:33,412 INFO L225 Difference]: With dead ends: 135 [2022-11-22 01:08:33,412 INFO L226 Difference]: Without dead ends: 135 [2022-11-22 01:08:33,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:33,416 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 127 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:33,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 82 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:33,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-22 01:08:33,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2022-11-22 01:08:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 110 states have internal predecessors, (122), 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 01:08:33,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2022-11-22 01:08:33,422 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 8 [2022-11-22 01:08:33,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:33,422 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2022-11-22 01:08:33,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2022-11-22 01:08:33,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:08:33,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:33,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:33,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:08:33,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:33,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:33,424 INFO L85 PathProgramCache]: Analyzing trace with hash 479237399, now seen corresponding path program 1 times [2022-11-22 01:08:33,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:33,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041197534] [2022-11-22 01:08:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:33,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:33,500 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 01:08:33,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041197534] [2022-11-22 01:08:33,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041197534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:33,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:33,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:08:33,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589927795] [2022-11-22 01:08:33,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:33,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:08:33,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:33,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:08:33,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:33,502 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 01:08:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:33,687 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2022-11-22 01:08:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:08:33,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-11-22 01:08:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:33,690 INFO L225 Difference]: With dead ends: 144 [2022-11-22 01:08:33,690 INFO L226 Difference]: Without dead ends: 144 [2022-11-22 01:08:33,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:08:33,691 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 200 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:33,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 105 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:33,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-22 01:08:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 112. [2022-11-22 01:08:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.5974025974025974) internal successors, (123), 111 states have internal predecessors, (123), 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 01:08:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2022-11-22 01:08:33,697 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 10 [2022-11-22 01:08:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:33,697 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2022-11-22 01:08:33,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 01:08:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2022-11-22 01:08:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:08:33,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:33,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:33,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:08:33,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:33,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash 479463659, now seen corresponding path program 1 times [2022-11-22 01:08:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:33,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223218815] [2022-11-22 01:08:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:33,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:33,852 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 01:08:33,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:33,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223218815] [2022-11-22 01:08:33,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223218815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:33,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:33,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:08:33,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936788411] [2022-11-22 01:08:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:33,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:08:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:08:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:33,855 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 01:08:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:34,022 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2022-11-22 01:08:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:08:34,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-11-22 01:08:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:34,025 INFO L225 Difference]: With dead ends: 111 [2022-11-22 01:08:34,025 INFO L226 Difference]: Without dead ends: 111 [2022-11-22 01:08:34,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:08:34,026 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 37 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:34,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 158 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-22 01:08:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-22 01:08:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.5844155844155845) internal successors, (122), 110 states have internal predecessors, (122), 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 01:08:34,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2022-11-22 01:08:34,031 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 10 [2022-11-22 01:08:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:34,032 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2022-11-22 01:08:34,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 01:08:34,032 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2022-11-22 01:08:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:08:34,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:34,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:34,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:08:34,033 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:34,034 INFO L85 PathProgramCache]: Analyzing trace with hash 479463660, now seen corresponding path program 1 times [2022-11-22 01:08:34,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:34,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414696262] [2022-11-22 01:08:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:34,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:34,263 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 01:08:34,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:34,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414696262] [2022-11-22 01:08:34,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414696262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:34,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:34,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:08:34,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527937573] [2022-11-22 01:08:34,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:34,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:08:34,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:08:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:34,267 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 01:08:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:34,444 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2022-11-22 01:08:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:08:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2022-11-22 01:08:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:34,445 INFO L225 Difference]: With dead ends: 111 [2022-11-22 01:08:34,445 INFO L226 Difference]: Without dead ends: 111 [2022-11-22 01:08:34,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:08:34,446 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 10 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:34,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 199 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:34,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-22 01:08:34,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2022-11-22 01:08:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 105 states have internal predecessors, (117), 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 01:08:34,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2022-11-22 01:08:34,450 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 10 [2022-11-22 01:08:34,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:34,451 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2022-11-22 01:08:34,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 01:08:34,451 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2022-11-22 01:08:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:08:34,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:34,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:08:34,452 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash 494053857, now seen corresponding path program 1 times [2022-11-22 01:08:34,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:34,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969155962] [2022-11-22 01:08:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:34,706 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 01:08:34,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:34,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969155962] [2022-11-22 01:08:34,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969155962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:34,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:34,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:08:34,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654841492] [2022-11-22 01:08:34,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:34,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:08:34,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:34,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:08:34,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:08:34,709 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 01:08:34,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:34,973 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2022-11-22 01:08:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 01:08:34,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2022-11-22 01:08:34,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:34,974 INFO L225 Difference]: With dead ends: 158 [2022-11-22 01:08:34,974 INFO L226 Difference]: Without dead ends: 158 [2022-11-22 01:08:34,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:08:34,975 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 225 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:34,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 156 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-22 01:08:34,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 113. [2022-11-22 01:08:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 112 states have internal predecessors, (125), 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 01:08:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2022-11-22 01:08:34,980 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 13 [2022-11-22 01:08:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:34,981 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2022-11-22 01:08:34,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 01:08:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2022-11-22 01:08:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:08:34,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:34,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:34,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:08:34,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:34,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash 947851196, now seen corresponding path program 1 times [2022-11-22 01:08:34,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:34,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454544472] [2022-11-22 01:08:34,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:34,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:35,151 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 01:08:35,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:35,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454544472] [2022-11-22 01:08:35,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454544472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:35,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:35,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:08:35,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169375175] [2022-11-22 01:08:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:35,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:08:35,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:35,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:08:35,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:35,154 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 01:08:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:35,303 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2022-11-22 01:08:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:08:35,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 01:08:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:35,305 INFO L225 Difference]: With dead ends: 112 [2022-11-22 01:08:35,305 INFO L226 Difference]: Without dead ends: 112 [2022-11-22 01:08:35,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:08:35,307 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:35,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 154 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-22 01:08:35,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-11-22 01:08:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 111 states have internal predecessors, (124), 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 01:08:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 124 transitions. [2022-11-22 01:08:35,310 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 124 transitions. Word has length 15 [2022-11-22 01:08:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:35,311 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 124 transitions. [2022-11-22 01:08:35,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 01:08:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 124 transitions. [2022-11-22 01:08:35,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:08:35,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:35,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:35,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 01:08:35,313 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:35,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:35,313 INFO L85 PathProgramCache]: Analyzing trace with hash 947851197, now seen corresponding path program 1 times [2022-11-22 01:08:35,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:35,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103718785] [2022-11-22 01:08:35,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:35,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:35,623 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 01:08:35,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:35,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103718785] [2022-11-22 01:08:35,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103718785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:35,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:35,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:08:35,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482848116] [2022-11-22 01:08:35,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:35,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:08:35,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:35,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:08:35,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:35,625 INFO L87 Difference]: Start difference. First operand 112 states and 124 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 01:08:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:35,767 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-11-22 01:08:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:08:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 01:08:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:35,768 INFO L225 Difference]: With dead ends: 109 [2022-11-22 01:08:35,769 INFO L226 Difference]: Without dead ends: 109 [2022-11-22 01:08:35,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:35,769 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 5 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:35,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 196 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-22 01:08:35,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2022-11-22 01:08:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.4375) internal successors, (115), 103 states have internal predecessors, (115), 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 01:08:35,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2022-11-22 01:08:35,773 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 15 [2022-11-22 01:08:35,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:35,773 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2022-11-22 01:08:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 01:08:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2022-11-22 01:08:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:08:35,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:35,774 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:35,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 01:08:35,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:35,775 INFO L85 PathProgramCache]: Analyzing trace with hash 405330386, now seen corresponding path program 1 times [2022-11-22 01:08:35,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:35,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107832802] [2022-11-22 01:08:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:35,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:35,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:35,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107832802] [2022-11-22 01:08:35,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107832802] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:35,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066555082] [2022-11-22 01:08:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:35,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:35,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:35,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:35,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:08:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:36,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-22 01:08:36,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:36,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:36,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:36,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:08:36,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:08:36,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:08:36,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:08:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:36,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:36,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066555082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:36,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [10820804] [2022-11-22 01:08:36,717 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-22 01:08:36,718 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:36,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:36,728 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:36,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:36,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,796 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 01:08:36,823 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 19 treesize of output 1 [2022-11-22 01:08:36,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-22 01:08:36,879 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 19 treesize of output 1 [2022-11-22 01:08:36,906 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 01:08:36,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,923 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 01:08:36,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,941 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 01:08:36,954 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 01:08:36,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:36,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:08:37,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,006 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 39 treesize of output 33 [2022-11-22 01:08:37,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:08:37,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,065 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 37 treesize of output 42 [2022-11-22 01:08:37,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,091 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 34 treesize of output 21 [2022-11-22 01:08:37,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:37,110 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 34 treesize of output 21 [2022-11-22 01:08:37,428 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:39,111 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3147#(and (= |ULTIMATE.start_main_~null~0#1.offset| 0) (not (= (select |#valid| |ULTIMATE.start_main_~end~0#1.base|) 1)) (or (not (= |ULTIMATE.start_main_~null~0#1.offset| |ULTIMATE.start_main_~end~0#1.offset|)) (not (= |ULTIMATE.start_main_~null~0#1.base| |ULTIMATE.start_main_~end~0#1.base|))) (= |ULTIMATE.start_main_~list~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:08:39,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:39,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:39,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2022-11-22 01:08:39,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525382032] [2022-11-22 01:08:39,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:39,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:08:39,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:39,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:08:39,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:08:39,113 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 01:08:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:39,449 INFO L93 Difference]: Finished difference Result 165 states and 181 transitions. [2022-11-22 01:08:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:08:39,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 19 [2022-11-22 01:08:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:39,451 INFO L225 Difference]: With dead ends: 165 [2022-11-22 01:08:39,451 INFO L226 Difference]: Without dead ends: 165 [2022-11-22 01:08:39,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:08:39,452 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 312 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:39,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 144 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-22 01:08:39,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2022-11-22 01:08:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 107 states have (on average 1.439252336448598) internal successors, (154), 130 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 154 transitions. [2022-11-22 01:08:39,456 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 154 transitions. Word has length 19 [2022-11-22 01:08:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:39,456 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 154 transitions. [2022-11-22 01:08:39,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 01:08:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 154 transitions. [2022-11-22 01:08:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 01:08:39,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:39,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:39,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:08:39,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:39,658 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash 404025859, now seen corresponding path program 1 times [2022-11-22 01:08:39,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:39,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785323] [2022-11-22 01:08:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:39,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:39,785 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 01:08:39,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:39,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785323] [2022-11-22 01:08:39,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:39,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:39,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:08:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776160770] [2022-11-22 01:08:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:39,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:08:39,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:08:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:39,788 INFO L87 Difference]: Start difference. First operand 131 states and 154 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 01:08:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:39,905 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2022-11-22 01:08:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:08:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2022-11-22 01:08:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:39,907 INFO L225 Difference]: With dead ends: 128 [2022-11-22 01:08:39,907 INFO L226 Difference]: Without dead ends: 128 [2022-11-22 01:08:39,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 01:08:39,907 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 5 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:39,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 189 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-22 01:08:39,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-22 01:08:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 127 states have internal predecessors, (149), 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 01:08:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2022-11-22 01:08:39,911 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 19 [2022-11-22 01:08:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:39,911 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2022-11-22 01:08:39,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 01:08:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2022-11-22 01:08:39,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 01:08:39,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:39,912 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:39,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 01:08:39,912 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:39,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash -360214418, now seen corresponding path program 1 times [2022-11-22 01:08:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:39,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483173714] [2022-11-22 01:08:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:39,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:40,516 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 01:08:40,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:40,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483173714] [2022-11-22 01:08:40,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483173714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:40,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110909424] [2022-11-22 01:08:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:40,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:40,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:40,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:40,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:08:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:40,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-22 01:08:40,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:40,691 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 01:08:40,721 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 13 treesize of output 9 [2022-11-22 01:08:40,771 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 01:08:40,772 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 11 treesize of output 11 [2022-11-22 01:08:40,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:40,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:08:40,828 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 01:08:40,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-22 01:08:40,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:08:40,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:08:40,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:08:40,989 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 01:08:40,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:41,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:41,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:08:41,235 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-22 01:08:41,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-22 01:08:41,244 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 7 treesize of output 3 [2022-11-22 01:08:41,268 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 01:08:41,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110909424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:41,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1027346141] [2022-11-22 01:08:41,271 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-22 01:08:41,271 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:41,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:41,271 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:41,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:41,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,291 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 01:08:41,306 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 19 treesize of output 1 [2022-11-22 01:08:41,313 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 19 treesize of output 1 [2022-11-22 01:08:41,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,321 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 01:08:41,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,346 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 01:08:41,357 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 01:08:41,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,368 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 01:08:41,379 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 01:08:41,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,403 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 39 treesize of output 33 [2022-11-22 01:08:41,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:08:41,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:08:41,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,477 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 34 treesize of output 21 [2022-11-22 01:08:41,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,496 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 34 treesize of output 21 [2022-11-22 01:08:41,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,515 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 37 treesize of output 42 [2022-11-22 01:08:41,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,606 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 01:08:41,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,647 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 26 treesize of output 21 [2022-11-22 01:08:41,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,666 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 26 treesize of output 21 [2022-11-22 01:08:41,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,688 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 48 treesize of output 45 [2022-11-22 01:08:41,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,776 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-22 01:08:41,777 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 2 case distinctions, treesize of input 33 treesize of output 31 [2022-11-22 01:08:41,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-22 01:08:41,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,846 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-22 01:08:41,846 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 2 case distinctions, treesize of input 81 treesize of output 63 [2022-11-22 01:08:41,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,917 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:41,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:41,938 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-22 01:08:41,938 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 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-22 01:08:41,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,961 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 01:08:41,961 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 2 case distinctions, treesize of input 96 treesize of output 66 [2022-11-22 01:08:41,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:41,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2022-11-22 01:08:42,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 61 [2022-11-22 01:08:42,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:42,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:42,243 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-22 01:08:42,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 461 treesize of output 463 [2022-11-22 01:08:42,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:42,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:42,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:42,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:42,304 INFO L321 Elim1Store]: treesize reduction 45, result has 13.5 percent of original size [2022-11-22 01:08:42,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 493 treesize of output 473 [2022-11-22 01:08:42,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:42,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:42,383 INFO L321 Elim1Store]: treesize reduction 53, result has 25.4 percent of original size [2022-11-22 01:08:42,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 489 treesize of output 482 [2022-11-22 01:08:43,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:43,161 INFO L321 Elim1Store]: treesize reduction 192, result has 17.6 percent of original size [2022-11-22 01:08:43,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 982 treesize of output 809 [2022-11-22 01:08:43,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:43,314 INFO L321 Elim1Store]: treesize reduction 172, result has 19.2 percent of original size [2022-11-22 01:08:43,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 933 treesize of output 848 [2022-11-22 01:08:43,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:43,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:43,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:43,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:43,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:43,497 INFO L321 Elim1Store]: treesize reduction 402, result has 12.4 percent of original size [2022-11-22 01:08:43,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 890 treesize of output 847 [2022-11-22 01:08:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:44,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:44,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:44,669 INFO L321 Elim1Store]: treesize reduction 232, result has 6.1 percent of original size [2022-11-22 01:08:44,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 1860 treesize of output 1531 [2022-11-22 01:08:44,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:44,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:44,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:44,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:44,819 INFO L321 Elim1Store]: treesize reduction 234, result has 17.0 percent of original size [2022-11-22 01:08:44,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 1203 treesize of output 1136 [2022-11-22 01:08:44,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:44,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:44,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:44,899 INFO L321 Elim1Store]: treesize reduction 127, result has 8.0 percent of original size [2022-11-22 01:08:44,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1213 treesize of output 1105 [2022-11-22 01:08:45,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:45,851 INFO L321 Elim1Store]: treesize reduction 388, result has 10.8 percent of original size [2022-11-22 01:08:45,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 2104 treesize of output 1970 [2022-11-22 01:08:46,242 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 01:08:46,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:46,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:46,287 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 01:08:46,288 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 19 treesize of output 26 [2022-11-22 01:08:46,307 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:08:46,308 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 26 treesize of output 21 [2022-11-22 01:08:46,328 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 01:08:46,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:46,377 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-22 01:08:46,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 62 [2022-11-22 01:08:46,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:46,406 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-22 01:08:46,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 54 [2022-11-22 01:08:46,426 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 13 treesize of output 9 [2022-11-22 01:08:46,452 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:46,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-22 01:08:46,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 01:08:46,472 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 01:08:46,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:46,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:46,499 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 01:08:46,518 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:08:46,519 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 26 treesize of output 21 [2022-11-22 01:08:46,543 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 01:08:46,544 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 19 treesize of output 26 [2022-11-22 01:08:46,584 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 13 treesize of output 9 [2022-11-22 01:08:46,609 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-22 01:08:46,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 65 [2022-11-22 01:08:46,638 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-22 01:08:46,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 61 [2022-11-22 01:08:46,841 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:48,807 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3865#(and (<= (+ 8 |ULTIMATE.start_main_~end~0#1.offset|) (select |#length| |ULTIMATE.start_main_~end~0#1.base|)) (not (= |ULTIMATE.start_main_~null~0#1.base| |ULTIMATE.start_main_~end~0#1.base|)) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~null~0#1.offset|) (<= 0 |ULTIMATE.start_main_~list~0#1.offset|) (= (select |#valid| |ULTIMATE.start_main_~end~0#1.base|) 1) (= |ULTIMATE.start_main_~end~0#1.base| |ULTIMATE.start_main_~list~0#1.base|) (= |ULTIMATE.start_main_~list~0#1.offset| |ULTIMATE.start_main_~end~0#1.offset|) (<= |ULTIMATE.start_main_~list~0#1.offset| 0) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~null~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (not (= ~unnamed1~0~BLACK (select (select |#memory_int| |ULTIMATE.start_main_~end~0#1.base|) (+ 4 |ULTIMATE.start_main_~end~0#1.offset|)))) (= |#NULL.base| 0))' at error location [2022-11-22 01:08:48,807 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:48,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:48,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2022-11-22 01:08:48,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456250997] [2022-11-22 01:08:48,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:48,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-22 01:08:48,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:48,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-22 01:08:48,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1437, Unknown=6, NotChecked=0, Total=1640 [2022-11-22 01:08:48,810 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 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 01:08:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:50,223 INFO L93 Difference]: Finished difference Result 192 states and 217 transitions. [2022-11-22 01:08:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 01:08:50,228 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-22 01:08:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:50,229 INFO L225 Difference]: With dead ends: 192 [2022-11-22 01:08:50,230 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 01:08:50,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=440, Invalid=2415, Unknown=7, NotChecked=0, Total=2862 [2022-11-22 01:08:50,237 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 623 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:50,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 360 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:08:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 01:08:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2022-11-22 01:08:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 116 states have (on average 1.4051724137931034) internal successors, (163), 139 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 01:08:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 163 transitions. [2022-11-22 01:08:50,244 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 163 transitions. Word has length 20 [2022-11-22 01:08:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:50,245 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 163 transitions. [2022-11-22 01:08:50,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 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 01:08:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 163 transitions. [2022-11-22 01:08:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 01:08:50,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:50,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:50,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:50,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 01:08:50,450 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:50,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1695487611, now seen corresponding path program 1 times [2022-11-22 01:08:50,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:50,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859459230] [2022-11-22 01:08:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:50,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:08:50,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:50,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859459230] [2022-11-22 01:08:50,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859459230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:50,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:50,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:08:50,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481736610] [2022-11-22 01:08:50,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:50,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:50,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:50,490 INFO L87 Difference]: Start difference. First operand 140 states and 163 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:50,546 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2022-11-22 01:08:50,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:50,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-22 01:08:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:50,548 INFO L225 Difference]: With dead ends: 142 [2022-11-22 01:08:50,548 INFO L226 Difference]: Without dead ends: 142 [2022-11-22 01:08:50,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:50,549 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:50,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 73 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:50,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-22 01:08:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-11-22 01:08:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 141 states have internal predecessors, (162), 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 01:08:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2022-11-22 01:08:50,553 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 24 [2022-11-22 01:08:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:50,553 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2022-11-22 01:08:50,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2022-11-22 01:08:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 01:08:50,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:50,554 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:08:50,555 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-11-22 01:08:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2088284808, now seen corresponding path program 1 times [2022-11-22 01:08:50,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:50,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325550194] [2022-11-22 01:08:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:51,519 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 01:08:51,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:51,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325550194] [2022-11-22 01:08:51,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325550194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:51,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804360035] [2022-11-22 01:08:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:51,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:51,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:51,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_463c264d-67f8-4e7a-9839-55fc56afe835/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:08:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:51,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-22 01:08:51,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:51,680 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 01:08:51,705 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 13 treesize of output 9 [2022-11-22 01:08:51,764 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 01:08:51,765 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 11 treesize of output 11 [2022-11-22 01:08:51,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:51,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 01:08:51,817 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 01:08:51,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-22 01:08:51,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:08:51,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:08:51,925 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 01:08:51,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-22 01:08:51,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:51,968 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 16 treesize of output 18 [2022-11-22 01:08:52,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-22 01:08:52,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:08:52,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-22 01:08:52,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 01:08:52,088 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 01:08:52,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:52,194 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_711 (Array Int Int))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_711) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) is different from false [2022-11-22 01:08:52,365 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-22 01:08:52,365 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 13 treesize of output 12 [2022-11-22 01:08:52,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:52,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 01:08:52,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2022-11-22 01:08:52,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:52,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-11-22 01:08:52,604 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 7 treesize of output 3 [2022-11-22 01:08:52,635 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 01:08:52,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804360035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:52,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1220654533] [2022-11-22 01:08:52,638 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-22 01:08:52,638 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:52,638 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:52,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:52,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:52,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,659 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 01:08:52,673 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 19 treesize of output 1 [2022-11-22 01:08:52,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,681 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 01:08:52,690 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 19 treesize of output 1 [2022-11-22 01:08:52,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,713 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 01:08:52,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,727 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 01:08:52,737 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 01:08:52,745 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 01:08:52,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:08:52,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 01:08:52,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,792 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 39 treesize of output 33 [2022-11-22 01:08:52,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,863 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 34 treesize of output 21 [2022-11-22 01:08:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,886 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 34 treesize of output 21 [2022-11-22 01:08:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,909 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 37 treesize of output 42 [2022-11-22 01:08:52,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:52,993 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 34 treesize of output 43 [2022-11-22 01:08:53,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,028 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 26 treesize of output 21 [2022-11-22 01:08:53,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,047 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 48 treesize of output 45 [2022-11-22 01:08:53,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,063 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 26 treesize of output 21 [2022-11-22 01:08:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,149 INFO L321 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2022-11-22 01:08:53,149 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 2 case distinctions, treesize of input 48 treesize of output 65 [2022-11-22 01:08:53,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,202 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-22 01:08:53,203 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 2 case distinctions, treesize of input 81 treesize of output 63 [2022-11-22 01:08:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-22 01:08:53,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,275 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 01:08:53,276 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 2 case distinctions, treesize of input 41 treesize of output 31 [2022-11-22 01:08:53,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:53,294 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:53,318 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2022-11-22 01:08:53,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 82 [2022-11-22 01:08:53,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,352 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-22 01:08:53,353 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 2 case distinctions, treesize of input 153 treesize of output 111 [2022-11-22 01:08:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 56 [2022-11-22 01:08:53,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 65 [2022-11-22 01:08:53,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-22 01:08:53,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,487 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 33 treesize of output 31 [2022-11-22 01:08:53,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,587 INFO L321 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2022-11-22 01:08:53,588 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 5 case distinctions, treesize of input 252 treesize of output 168 [2022-11-22 01:08:53,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 75 [2022-11-22 01:08:53,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2022-11-22 01:08:53,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,708 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-11-22 01:08:53,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 164 [2022-11-22 01:08:53,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 84 [2022-11-22 01:08:53,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-11-22 01:08:53,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:53,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 26 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 71 [2022-11-22 01:08:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,036 INFO L321 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2022-11-22 01:08:54,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 333 treesize of output 213 [2022-11-22 01:08:54,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2022-11-22 01:08:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 87 [2022-11-22 01:08:54,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,299 INFO L321 Elim1Store]: treesize reduction 136, result has 17.6 percent of original size [2022-11-22 01:08:54,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 431 treesize of output 241 [2022-11-22 01:08:54,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 93 [2022-11-22 01:08:54,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-11-22 01:08:54,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:54,522 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-22 01:08:54,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 436 treesize of output 270 [2022-11-22 01:08:54,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 102 [2022-11-22 01:08:54,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 34 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 79 [2022-11-22 01:08:54,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 66 [2022-11-22 01:08:54,814 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 01:08:54,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:54,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 01:08:54,839 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 01:08:54,861 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-22 01:08:54,862 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 26 treesize of output 21 [2022-11-22 01:08:54,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:54,883 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 01:08:54,883 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 19 treesize of output 22 [2022-11-22 01:08:54,910 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 13 treesize of output 9 [2022-11-22 01:08:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,939 INFO L321 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2022-11-22 01:08:54,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 79 [2022-11-22 01:08:54,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:54,989 INFO L321 Elim1Store]: treesize reduction 76, result has 29.0 percent of original size [2022-11-22 01:08:54,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 84 [2022-11-22 01:08:55,109 INFO L321 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2022-11-22 01:08:55,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 72 treesize of output 91 [2022-11-22 01:08:55,147 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 01:08:55,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 67 treesize of output 74 [2022-11-22 01:08:55,276 INFO L321 Elim1Store]: treesize reduction 16, result has 63.6 percent of original size [2022-11-22 01:08:55,277 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 2 case distinctions, treesize of input 78 treesize of output 93 [2022-11-22 01:08:55,325 INFO L321 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-11-22 01:08:55,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 76 [2022-11-22 01:08:55,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:55,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-22 01:08:56,045 INFO L321 Elim1Store]: treesize reduction 216, result has 58.6 percent of original size [2022-11-22 01:08:56,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 535 treesize of output 776 [2022-11-22 01:08:56,533 INFO L321 Elim1Store]: treesize reduction 112, result has 67.3 percent of original size [2022-11-22 01:08:56,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 641 treesize of output 621 [2022-11-22 01:08:56,672 INFO L321 Elim1Store]: treesize reduction 160, result has 15.3 percent of original size [2022-11-22 01:08:56,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 283 treesize of output 280 [2022-11-22 01:20:40,781 WARN L233 SmtUtils]: Spent 25.67s on a formula simplification that was a NOOP. DAG size: 1823 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:21:06,578 WARN L233 SmtUtils]: Spent 8.71s on a formula simplification that was a NOOP. DAG size: 1819 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:21:28,808 WARN L233 SmtUtils]: Spent 11.19s on a formula simplification that was a NOOP. DAG size: 1426 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:21:50,751 WARN L233 SmtUtils]: Spent 11.05s on a formula simplification that was a NOOP. DAG size: 1422 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-22 01:22:07,242 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification that was a NOOP. DAG size: 1419 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)