./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:50:30,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:50:30,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:50:30,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:50:30,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:50:30,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:50:30,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:50:30,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:50:30,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:50:30,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:50:30,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:50:30,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:50:30,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:50:30,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:50:30,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:50:30,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:50:30,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:50:30,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:50:30,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:50:30,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:50:30,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:50:30,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:50:30,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:50:30,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:50:30,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:50:30,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:50:30,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:50:30,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:50:30,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:50:30,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:50:30,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:50:30,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:50:30,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:50:30,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:50:30,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:50:30,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:50:30,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:50:30,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:50:30,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:50:30,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:50:30,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:50:30,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:50:30,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:50:30,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:50:30,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:50:30,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:50:30,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:50:30,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:50:30,809 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:50:30,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:50:30,810 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:50:30,810 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:50:30,811 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:50:30,811 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:50:30,812 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:50:30,812 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:50:30,813 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:50:30,813 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:50:30,814 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:50:30,814 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:50:30,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:50:30,816 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:50:30,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:50:30,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:50:30,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:50:30,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:50:30,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:50:30,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:50:30,817 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:50:30,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:50:30,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:50:30,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:50:30,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:50:30,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:50:30,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:50:30,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:50:30,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:50:30,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:50:30,820 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:50:30,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:50:30,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:50:30,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:50:30,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:50:30,821 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a81d76a671fec08918102c7898e8919d02b265d05707efa1508363dab4714d44 [2021-11-21 00:50:31,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:50:31,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:50:31,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:50:31,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:50:31,227 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:50:31,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2021-11-21 00:50:31,322 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/data/4e9be39bf/6055e55d347f43eb978bdffaffe3de79/FLAG9b138c514 [2021-11-21 00:50:31,998 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:50:31,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i [2021-11-21 00:50:32,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/data/4e9be39bf/6055e55d347f43eb978bdffaffe3de79/FLAG9b138c514 [2021-11-21 00:50:32,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/data/4e9be39bf/6055e55d347f43eb978bdffaffe3de79 [2021-11-21 00:50:32,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:50:32,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:50:32,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:50:32,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:50:32,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:50:32,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd922ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32, skipping insertion in model container [2021-11-21 00:50:32,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:50:32,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:50:32,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i[24177,24190] [2021-11-21 00:50:32,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:50:32,754 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:50:32,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/sv-benchmarks/c/list-simple/dll2c_remove_all_reverse.i[24177,24190] [2021-11-21 00:50:32,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:50:32,890 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:50:32,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32 WrapperNode [2021-11-21 00:50:32,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:50:32,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:50:32,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:50:32,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:50:32,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,964 INFO L137 Inliner]: procedures = 126, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 105 [2021-11-21 00:50:32,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:50:32,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:50:32,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:50:32,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:50:32,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:32,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:33,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:33,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:50:33,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:50:33,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:50:33,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:50:33,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (1/1) ... [2021-11-21 00:50:33,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:50:33,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:50:33,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:50:33,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:50:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:50:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-11-21 00:50:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-11-21 00:50:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:50:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:50:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:50:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:50:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:50:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:50:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:50:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:50:33,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:50:33,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:50:33,220 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:50:33,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:50:33,592 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:50:33,716 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:50:33,716 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 00:50:33,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:33 BoogieIcfgContainer [2021-11-21 00:50:33,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:50:33,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:50:33,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:50:33,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:50:33,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:50:32" (1/3) ... [2021-11-21 00:50:33,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbb82a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:50:33, skipping insertion in model container [2021-11-21 00:50:33,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:32" (2/3) ... [2021-11-21 00:50:33,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbb82a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:50:33, skipping insertion in model container [2021-11-21 00:50:33,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:50:33" (3/3) ... [2021-11-21 00:50:33,736 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2c_remove_all_reverse.i [2021-11-21 00:50:33,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:50:33,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:50:33,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:50:33,838 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:50:33,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:50:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:50:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:50:33,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:33,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:33,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1325907828, now seen corresponding path program 1 times [2021-11-21 00:50:33,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:33,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7000875] [2021-11-21 00:50:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:33,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:50:34,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:34,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7000875] [2021-11-21 00:50:34,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7000875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:34,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:34,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:50:34,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476639946] [2021-11-21 00:50:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:34,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:50:34,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:34,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:50:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:50:34,287 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:50:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:34,389 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-11-21 00:50:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:50:34,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-21 00:50:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:34,401 INFO L225 Difference]: With dead ends: 25 [2021-11-21 00:50:34,402 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 00:50:34,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:50:34,411 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:34,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:50:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 00:50:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-11-21 00:50:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:50:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-21 00:50:34,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2021-11-21 00:50:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:34,470 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-21 00:50:34,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:50:34,473 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-21 00:50:34,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:50:34,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:34,475 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:34,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:50:34,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1696736134, now seen corresponding path program 1 times [2021-11-21 00:50:34,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:34,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974170070] [2021-11-21 00:50:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:34,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:50:34,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:34,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974170070] [2021-11-21 00:50:34,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974170070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:50:34,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:50:34,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:50:34,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849573185] [2021-11-21 00:50:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:50:34,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:50:34,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:50:34,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:50:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:34,684 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:50:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:50:34,763 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-11-21 00:50:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:50:34,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-21 00:50:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:50:34,766 INFO L225 Difference]: With dead ends: 18 [2021-11-21 00:50:34,766 INFO L226 Difference]: Without dead ends: 15 [2021-11-21 00:50:34,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:50:34,769 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:50:34,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:50:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-21 00:50:34,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-21 00:50:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:50:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-21 00:50:34,799 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 16 [2021-11-21 00:50:34,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:50:34,800 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-21 00:50:34,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:50:34,800 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-21 00:50:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:50:34,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:50:34,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:50:34,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:50:34,802 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:50:34,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:50:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1059394163, now seen corresponding path program 1 times [2021-11-21 00:50:34,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:50:34,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282373378] [2021-11-21 00:50:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:34,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:50:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:50:34,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:50:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282373378] [2021-11-21 00:50:34,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282373378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:50:34,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568009623] [2021-11-21 00:50:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:50:34,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:50:34,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:50:34,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:50:34,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:50:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:50:35,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:50:35,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:50:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:50:35,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:50:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:50:35,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568009623] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:50:35,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1896183231] [2021-11-21 00:50:35,434 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 00:50:35,434 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:50:35,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:50:35,450 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:50:35,451 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:50:35,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,626 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:50:35,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:50:35,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:50:35,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 00:50:35,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:50:35,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-11-21 00:50:35,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2021-11-21 00:50:35,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:35,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-11-21 00:50:36,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:36,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:36,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-21 00:50:36,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:36,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-21 00:50:36,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:36,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:36,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-21 00:50:36,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:36,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-11-21 00:50:37,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-21 00:50:37,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:50:37,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:50:37,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-21 00:50:37,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:50:37,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:50:37,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-21 00:50:37,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:50:37,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-21 00:50:37,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2021-11-21 00:50:38,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:38,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:38,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:38,057 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 00:50:38,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30 [2021-11-21 00:50:38,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:38,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:38,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:38,107 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:50:38,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 34 [2021-11-21 00:50:38,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:38,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:38,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:38,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 18 [2021-11-21 00:50:38,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:39,005 INFO L354 Elim1Store]: treesize reduction 56, result has 21.1 percent of original size [2021-11-21 00:50:39,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 177 treesize of output 172 [2021-11-21 00:50:39,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:39,067 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-21 00:50:39,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 194 [2021-11-21 00:50:39,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:39,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 205 [2021-11-21 00:50:39,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:39,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 11 [2021-11-21 00:50:39,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:39,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 14 [2021-11-21 00:50:39,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:39,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-11-21 00:50:39,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:39,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 52 [2021-11-21 00:50:39,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:39,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 43 [2021-11-21 00:50:40,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:40,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-21 00:50:40,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:40,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2021-11-21 00:50:40,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:40,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:40,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-21 00:50:40,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:40,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:41,900 INFO L354 Elim1Store]: treesize reduction 869, result has 13.4 percent of original size [2021-11-21 00:50:41,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 503 treesize of output 460 [2021-11-21 00:50:41,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 546 treesize of output 550 [2021-11-21 00:50:41,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:42,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:42,590 INFO L354 Elim1Store]: treesize reduction 809, result has 13.9 percent of original size [2021-11-21 00:50:42,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 621 treesize of output 596 [2021-11-21 00:50:42,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 656 treesize of output 650 [2021-11-21 00:50:43,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:50:43,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-21 00:50:43,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:50:44,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 00:50:44,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 3 [2021-11-21 00:50:44,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:44,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:44,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:44,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:44,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:44,490 INFO L354 Elim1Store]: treesize reduction 66, result has 4.3 percent of original size [2021-11-21 00:50:44,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 74 treesize of output 53 [2021-11-21 00:50:44,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:44,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:44,662 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-21 00:50:44,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 59 [2021-11-21 00:50:44,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:44,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:44,971 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-21 00:50:44,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 59 [2021-11-21 00:50:45,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:45,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:45,344 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:50:45,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 49 [2021-11-21 00:50:45,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:45,431 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:50:45,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 49 [2021-11-21 00:50:46,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:46,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:46,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:46,057 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:50:46,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 56 [2021-11-21 00:50:46,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:46,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:46,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:46,363 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:50:46,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 56 [2021-11-21 00:50:46,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:46,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:46,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:46,996 INFO L354 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2021-11-21 00:50:46,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 66 [2021-11-21 00:50:47,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:47,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:47,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:47,368 INFO L354 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2021-11-21 00:50:47,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 66 [2021-11-21 00:50:49,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:49,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:49,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:49,060 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:50:49,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 59 [2021-11-21 00:50:49,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:49,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:49,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:49,347 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:50:49,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 59 [2021-11-21 00:50:49,674 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:50:49,841 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:50:50,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:50,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:50,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:50,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:50,144 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 00:50:50,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 66 [2021-11-21 00:50:50,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:50,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:50,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:50,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:50,402 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 00:50:50,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 66 [2021-11-21 00:50:50,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:50,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:51,001 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-21 00:50:51,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 59 [2021-11-21 00:50:51,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:51,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:51,190 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:50:51,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 49 [2021-11-21 00:50:51,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:51,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:51,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:51,323 INFO L354 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2021-11-21 00:50:51,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 66 [2021-11-21 00:50:51,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:51,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:51,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:51,534 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:50:51,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 106 treesize of output 56 [2021-11-21 00:50:53,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:53,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:53,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:53,061 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:50:53,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 23 [2021-11-21 00:50:53,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:53,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:53,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:50:53,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 23 [2021-11-21 00:50:55,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:55,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:55,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:55,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:55,026 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:50:55,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 67 treesize of output 32 [2021-11-21 00:50:56,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:56,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:56,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:56,587 INFO L354 Elim1Store]: treesize reduction 46, result has 2.1 percent of original size [2021-11-21 00:50:56,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 26 [2021-11-21 00:50:56,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:56,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:56,697 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-11-21 00:50:56,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 26 [2021-11-21 00:51:00,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:00,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:00,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:00,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:00,161 INFO L354 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2021-11-21 00:51:00,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1480 treesize of output 1401 [2021-11-21 00:51:02,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:02,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:02,953 INFO L354 Elim1Store]: treesize reduction 76, result has 3.8 percent of original size [2021-11-21 00:51:02,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 292 treesize of output 233 [2021-11-21 00:51:03,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:03,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:03,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:03,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:03,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:03,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:03,304 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:03,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 69 treesize of output 29 [2021-11-21 00:51:03,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:03,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:03,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:03,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:03,530 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-21 00:51:03,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 69 treesize of output 37 [2021-11-21 00:51:03,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:03,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:03,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:03,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:03,826 INFO L354 Elim1Store]: treesize reduction 97, result has 11.0 percent of original size [2021-11-21 00:51:03,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 260 treesize of output 217 [2021-11-21 00:51:04,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:04,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:04,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:04,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:04,388 INFO L354 Elim1Store]: treesize reduction 97, result has 11.0 percent of original size [2021-11-21 00:51:04,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 268 treesize of output 213 [2021-11-21 00:51:05,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:05,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:05,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:05,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:05,795 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:05,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 20 [2021-11-21 00:51:05,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:05,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:05,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:05,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:05,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:05,933 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:05,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 29 [2021-11-21 00:51:06,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:06,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:06,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:06,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:06,110 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 00:51:06,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 59 treesize of output 29 [2021-11-21 00:51:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:06,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:06,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:06,261 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:06,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 29 [2021-11-21 00:51:08,197 INFO L354 Elim1Store]: treesize reduction 376, result has 35.3 percent of original size [2021-11-21 00:51:08,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 457 treesize of output 489 [2021-11-21 00:51:08,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 588 treesize of output 592 [2021-11-21 00:51:08,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 592 treesize of output 586 [2021-11-21 00:51:08,547 INFO L354 Elim1Store]: treesize reduction 330, result has 38.5 percent of original size [2021-11-21 00:51:08,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 657 treesize of output 685 [2021-11-21 00:51:09,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-21 00:51:10,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 00:51:11,163 INFO L354 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2021-11-21 00:51:11,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-21 00:51:11,812 INFO L354 Elim1Store]: treesize reduction 47, result has 23.0 percent of original size [2021-11-21 00:51:11,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2021-11-21 00:51:12,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-21 00:51:12,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2021-11-21 00:51:12,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:51:13,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:51:13,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 00:51:13,797 INFO L354 Elim1Store]: treesize reduction 71, result has 34.9 percent of original size [2021-11-21 00:51:13,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 295 treesize of output 304 [2021-11-21 00:51:14,138 INFO L354 Elim1Store]: treesize reduction 71, result has 34.9 percent of original size [2021-11-21 00:51:14,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 286 treesize of output 295 [2021-11-21 00:51:14,708 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-21 00:51:14,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 57 [2021-11-21 00:51:15,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:15,531 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:15,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 47 [2021-11-21 00:51:16,267 INFO L354 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2021-11-21 00:51:16,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 48 [2021-11-21 00:51:16,491 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 00:51:16,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 36 [2021-11-21 00:51:17,336 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-11-21 00:51:17,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 67 [2021-11-21 00:51:18,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:18,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 51 [2021-11-21 00:51:19,022 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-21 00:51:19,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 40 [2021-11-21 00:51:19,581 INFO L354 Elim1Store]: treesize reduction 36, result has 7.7 percent of original size [2021-11-21 00:51:19,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 37 [2021-11-21 00:51:19,659 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-21 00:51:19,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 57 [2021-11-21 00:51:19,797 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:51:19,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 57 [2021-11-21 00:51:19,858 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:51:19,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 31 [2021-11-21 00:51:20,132 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-21 00:51:20,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 61 [2021-11-21 00:51:20,271 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-11-21 00:51:20,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 57 [2021-11-21 00:51:20,416 INFO L354 Elim1Store]: treesize reduction 36, result has 7.7 percent of original size [2021-11-21 00:51:20,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 37 [2021-11-21 00:51:20,476 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-21 00:51:20,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 60 [2021-11-21 00:51:20,621 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:51:20,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 57 [2021-11-21 00:51:20,651 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-21 00:51:20,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 31 [2021-11-21 00:51:20,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:20,858 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:20,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21 [2021-11-21 00:51:20,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:20,904 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:20,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 47 [2021-11-21 00:51:21,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:21,031 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:51:21,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 50 [2021-11-21 00:51:21,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:21,079 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:51:21,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 24 [2021-11-21 00:51:21,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:21,197 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-21 00:51:21,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 24 [2021-11-21 00:51:21,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:21,239 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-21 00:51:21,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 47 [2021-11-21 00:51:21,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:21,307 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:21,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 21 [2021-11-21 00:51:21,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:21,340 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:21,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 47 [2021-11-21 00:51:21,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:21,451 INFO L354 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2021-11-21 00:51:21,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 51 [2021-11-21 00:51:21,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:21,615 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:51:21,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 47 [2021-11-21 00:51:21,827 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:51:21,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 89 [2021-11-21 00:51:23,493 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 63 for LOIs [2021-11-21 00:51:23,766 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:51:26,026 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:51:26,026 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:51:26,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-21 00:51:26,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411166265] [2021-11-21 00:51:26,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:51:26,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:51:26,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:51:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:51:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:51:26,029 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:51:26,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:51:26,115 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-21 00:51:26,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:51:26,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 17 [2021-11-21 00:51:26,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:51:26,117 INFO L225 Difference]: With dead ends: 19 [2021-11-21 00:51:26,117 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 00:51:26,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:51:26,118 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:51:26,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:51:26,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 00:51:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-21 00:51:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:51:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-21 00:51:26,125 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 17 [2021-11-21 00:51:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:51:26,125 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-21 00:51:26,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:51:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-21 00:51:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:51:26,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:51:26,127 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:51:26,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:51:26,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:51:26,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:51:26,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:51:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1518337754, now seen corresponding path program 2 times [2021-11-21 00:51:26,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:51:26,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228647447] [2021-11-21 00:51:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:51:26,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:51:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:51:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:51:27,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:51:27,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228647447] [2021-11-21 00:51:27,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228647447] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:51:27,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440161440] [2021-11-21 00:51:27,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:51:27,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:51:27,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:51:27,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:51:27,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9700a7b0-2afc-4415-b613-7f4f39aa67a8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:51:27,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:51:27,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:51:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-21 00:51:27,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:51:27,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:51:27,670 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:51:27,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 00:51:27,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-21 00:51:27,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-21 00:51:27,831 INFO L354 Elim1Store]: treesize reduction 286, result has 14.4 percent of original size [2021-11-21 00:51:27,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 284 treesize of output 168 [2021-11-21 00:51:27,860 INFO L354 Elim1Store]: treesize reduction 230, result has 15.4 percent of original size [2021-11-21 00:51:27,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 154 [2021-11-21 00:51:29,158 INFO L354 Elim1Store]: treesize reduction 1260, result has 8.3 percent of original size [2021-11-21 00:51:29,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 16 new quantified variables, introduced 42 case distinctions, treesize of input 746 treesize of output 527 [2021-11-21 00:51:29,602 INFO L354 Elim1Store]: treesize reduction 1206, result has 8.8 percent of original size [2021-11-21 00:51:29,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 17 new quantified variables, introduced 42 case distinctions, treesize of input 1397 treesize of output 825 [2021-11-21 00:51:29,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1424 treesize of output 1428 [2021-11-21 00:51:29,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1428 treesize of output 1404 [2021-11-21 00:51:30,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 3 [2021-11-21 00:51:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:30,530 INFO L354 Elim1Store]: treesize reduction 244, result has 0.4 percent of original size [2021-11-21 00:51:30,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 872 treesize of output 806 [2021-11-21 00:51:32,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:32,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,239 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 00:51:32,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 78 [2021-11-21 00:51:32,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:32,341 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-21 00:51:32,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 360 treesize of output 244 [2021-11-21 00:51:32,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 1 [2021-11-21 00:51:32,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:51:32,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:51:32,416 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-11-21 00:51:32,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 284 treesize of output 189