./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH --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 b8fdffcd3d5c4257bd11c08a4d1194cf24a2807af8b572699be11b4eeff19c02 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:51:28,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:51:28,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:51:28,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:51:28,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:51:28,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:51:28,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:51:28,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:51:28,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:51:28,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:51:28,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:51:28,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:51:28,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:51:28,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:51:28,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:51:28,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:51:28,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:51:28,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:51:28,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:51:28,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:51:28,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:51:28,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:51:28,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:51:28,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:51:28,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:51:28,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:51:28,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:51:28,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:51:28,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:51:28,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:51:28,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:51:28,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:51:28,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:51:28,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:51:28,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:51:28,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:51:28,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:51:28,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:51:28,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:51:28,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:51:28,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:51:28,540 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:51:28,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:51:28,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:51:28,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:51:28,580 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:51:28,580 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:51:28,580 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:51:28,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:51:28,580 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:51:28,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:51:28,581 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:51:28,581 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:51:28,581 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:51:28,581 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:51:28,582 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:51:28,582 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:51:28,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:51:28,583 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:51:28,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:51:28,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:51:28,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:51:28,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:51:28,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:51:28,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:51:28,584 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:51:28,584 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:51:28,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:51:28,585 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:51:28,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:51:28,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:51:28,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:51:28,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:51:28,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:51:28,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:51:28,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:51:28,586 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:51:28,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:51:28,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:51:28,587 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:51:28,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:51:28,587 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_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8fdffcd3d5c4257bd11c08a4d1194cf24a2807af8b572699be11b4eeff19c02 [2021-11-03 03:51:28,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:51:28,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:51:28,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:51:28,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:51:28,861 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:51:28,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c [2021-11-03 03:51:28,937 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/data/b1522fa18/5d833939958d4859bd27ff6fcc66f100/FLAGf4a405b41 [2021-11-03 03:51:29,406 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:51:29,407 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c [2021-11-03 03:51:29,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/data/b1522fa18/5d833939958d4859bd27ff6fcc66f100/FLAGf4a405b41 [2021-11-03 03:51:29,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/data/b1522fa18/5d833939958d4859bd27ff6fcc66f100 [2021-11-03 03:51:29,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:51:29,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:51:29,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:51:29,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:51:29,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:51:29,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:29" (1/1) ... [2021-11-03 03:51:29,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c0e0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:29, skipping insertion in model container [2021-11-03 03:51:29,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:29" (1/1) ... [2021-11-03 03:51:29,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:51:29,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:51:29,984 WARN L228 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_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c[416,429] [2021-11-03 03:51:29,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:51:30,002 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:51:30,013 WARN L228 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_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/sv-benchmarks/c/array-cav19/array_init_pair_sum_const.c[416,429] [2021-11-03 03:51:30,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:51:30,032 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:51:30,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30 WrapperNode [2021-11-03 03:51:30,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:51:30,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:51:30,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:51:30,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:51:30,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:51:30,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:51:30,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:51:30,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:51:30,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:51:30,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:51:30,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:51:30,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:51:30,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (1/1) ... [2021-11-03 03:51:30,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:51:30,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:30,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:51:30,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:51:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:51:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:51:30,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:51:30,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:51:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:51:30,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:51:30,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:51:30,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:51:30,452 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-03 03:51:30,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:30 BoogieIcfgContainer [2021-11-03 03:51:30,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:51:30,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:51:30,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:51:30,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:51:30,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:51:29" (1/3) ... [2021-11-03 03:51:30,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fe1a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:30, skipping insertion in model container [2021-11-03 03:51:30,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:30" (2/3) ... [2021-11-03 03:51:30,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fe1a3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:30, skipping insertion in model container [2021-11-03 03:51:30,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:30" (3/3) ... [2021-11-03 03:51:30,474 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_pair_sum_const.c [2021-11-03 03:51:30,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:51:30,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:51:30,555 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:51:30,562 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 [2021-11-03 03:51:30,562 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:51:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 03:51:30,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:30,581 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 03:51:30,582 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:51:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:30,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1597235250, now seen corresponding path program 1 times [2021-11-03 03:51:30,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:51:30,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277105341] [2021-11-03 03:51:30,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:30,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:51:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:30,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:30,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:30,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277105341] [2021-11-03 03:51:30,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277105341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:30,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:30,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:51:30,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281644120] [2021-11-03 03:51:30,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:51:30,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:51:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:51:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:51:30,821 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:30,850 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2021-11-03 03:51:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:51:30,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-03 03:51:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:30,859 INFO L225 Difference]: With dead ends: 17 [2021-11-03 03:51:30,861 INFO L226 Difference]: Without dead ends: 9 [2021-11-03 03:51:30,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:51:30,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-03 03:51:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-03 03:51:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-03 03:51:30,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2021-11-03 03:51:30,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:30,899 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-03 03:51:30,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-03 03:51:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 03:51:30,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:30,900 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:30,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:51:30,901 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:51:30,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1770300940, now seen corresponding path program 1 times [2021-11-03 03:51:30,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:51:30,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802713436] [2021-11-03 03:51:30,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:30,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:51:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:31,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:31,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802713436] [2021-11-03 03:51:31,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802713436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:31,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:31,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:51:31,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570101250] [2021-11-03 03:51:31,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:51:31,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:51:31,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:51:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:51:31,044 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:31,071 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-11-03 03:51:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:51:31,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-03 03:51:31,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:31,074 INFO L225 Difference]: With dead ends: 15 [2021-11-03 03:51:31,074 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 03:51:31,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:51:31,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 03:51:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-03 03:51:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-03 03:51:31,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2021-11-03 03:51:31,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:31,081 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-03 03:51:31,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-03 03:51:31,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 03:51:31,084 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:31,084 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:31,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:51:31,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:51:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:31,089 INFO L85 PathProgramCache]: Analyzing trace with hash -957214816, now seen corresponding path program 1 times [2021-11-03 03:51:31,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:51:31,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822435349] [2021-11-03 03:51:31,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:31,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:51:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:31,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:31,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822435349] [2021-11-03 03:51:31,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822435349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:51:31,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575735480] [2021-11-03 03:51:31,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:31,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:31,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:31,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:51:31,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 03:51:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:31,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:51:31,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:31,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:31,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575735480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:31,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [478990804] [2021-11-03 03:51:31,501 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 03:51:31,502 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:51:31,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:51:31,519 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:51:31,520 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:51:31,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,594 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:31,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 03:51:31,602 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:31,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-03 03:51:31,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-03 03:51:31,654 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 78=[|v_#valid_32|]} [2021-11-03 03:51:31,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 27 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-03 03:51:31,732 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:31,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:31,735 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:31,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:31,774 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:31,917 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-03 03:51:31,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 66 [2021-11-03 03:51:31,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:31,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:31,932 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:31,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:31,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:31,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-03 03:51:31,994 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:31,995 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:236, output treesize:175 [2021-11-03 03:51:32,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,013 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:32,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 03:51:32,031 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size 204 [2021-11-03 03:51:32,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-11-03 03:51:32,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,076 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:51:32,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,077 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:51:32,077 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:32,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,104 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,116 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-03 03:51:32,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 03:51:32,124 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:32,127 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:205, output treesize:189 [2021-11-03 03:51:32,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,335 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:32,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,348 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:32,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-03 03:51:32,352 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:32,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,353 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 03:51:32,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 457 [2021-11-03 03:51:32,364 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:32,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 412 [2021-11-03 03:51:32,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 497 [2021-11-03 03:51:32,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-11-03 03:51:32,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:32,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:32,473 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:32,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:32,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2021-11-03 03:51:32,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:51:32,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:51:32,537 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:32,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,610 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,645 INFO L180 QuantifierPusher]: treesize reduction 124, result has 78.7 percent of original size [2021-11-03 03:51:32,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 459 [2021-11-03 03:51:32,657 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:51:32,658 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:619, output treesize:459 [2021-11-03 03:51:32,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,790 INFO L180 QuantifierPusher]: treesize reduction 54, result has 64.9 percent of original size [2021-11-03 03:51:32,793 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:32,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:51:32,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-03 03:51:32,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:32,819 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-03 03:51:32,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-03 03:51:32,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:32,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:32,823 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:32,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,827 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:51:32,830 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:32,830 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2021-11-03 03:51:32,837 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:32,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:32,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,846 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:32,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 03:51:32,851 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size 74 [2021-11-03 03:51:32,897 INFO L354 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2021-11-03 03:51:32,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2021-11-03 03:51:32,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,906 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:32,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 03:51:32,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 03:51:32,927 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 03:51:32,929 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:32,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:32,940 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-03 03:51:32,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-03 03:51:32,943 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:32,944 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:136 [2021-11-03 03:51:32,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:32,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:33,001 INFO L180 QuantifierPusher]: treesize reduction 54, result has 63.5 percent of original size [2021-11-03 03:51:33,005 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:33,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:33,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:51:33,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-03 03:51:33,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:33,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:33,057 INFO L354 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2021-11-03 03:51:33,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2021-11-03 03:51:33,061 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:33,065 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:33,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:33,070 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:33,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:33,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:33,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 03:51:33,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 03:51:33,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:33,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 03:51:33,088 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:33,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:33,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:33,109 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:33,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-11-03 03:51:33,112 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:33,112 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:188 [2021-11-03 03:51:33,128 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:33,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:33,136 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:51:33,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:51:33,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:51:33,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-11-03 03:51:33,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283957753] [2021-11-03 03:51:33,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:51:33,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:51:33,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:51:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:51:33,513 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:33,538 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-11-03 03:51:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:51:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 03:51:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:33,539 INFO L225 Difference]: With dead ends: 20 [2021-11-03 03:51:33,539 INFO L226 Difference]: Without dead ends: 13 [2021-11-03 03:51:33,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:51:33,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-03 03:51:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-03 03:51:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-03 03:51:33,542 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2021-11-03 03:51:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:33,542 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-03 03:51:33,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-03 03:51:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 03:51:33,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:33,543 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:33,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:33,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:33,744 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:51:33,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:33,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1834950302, now seen corresponding path program 2 times [2021-11-03 03:51:33,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:51:33,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005029203] [2021-11-03 03:51:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:33,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:51:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:33,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:33,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005029203] [2021-11-03 03:51:33,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005029203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:51:33,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735216736] [2021-11-03 03:51:33,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:51:33,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:33,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:51:33,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 03:51:33,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 03:51:33,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:51:33,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:51:33,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 03:51:33,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 03:51:34,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735216736] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:34,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [597392606] [2021-11-03 03:51:34,006 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 03:51:34,006 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:51:34,007 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:51:34,007 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:51:34,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:51:34,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,019 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 03:51:34,022 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,022 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-03 03:51:34,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-03 03:51:34,034 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_16|], 78=[|v_#valid_33|]} [2021-11-03 03:51:34,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 27 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-03 03:51:34,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:34,087 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:34,089 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,203 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-03 03:51:34,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 66 [2021-11-03 03:51:34,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:34,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:34,212 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-03 03:51:34,228 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,229 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:236, output treesize:175 [2021-11-03 03:51:34,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,238 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 03:51:34,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-11-03 03:51:34,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-11-03 03:51:34,267 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:34,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:34,271 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,293 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 206 [2021-11-03 03:51:34,300 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,300 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:224, output treesize:206 [2021-11-03 03:51:34,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,441 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,443 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-03 03:51:34,446 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 03:51:34,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 472 [2021-11-03 03:51:34,458 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-03 03:51:34,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 512 [2021-11-03 03:51:34,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-11-03 03:51:34,525 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:34,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:34,529 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:34,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 77 [2021-11-03 03:51:34,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 03:51:34,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 03:51:34,584 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,664 INFO L180 QuantifierPusher]: treesize reduction 129, result has 78.4 percent of original size [2021-11-03 03:51:34,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 469 [2021-11-03 03:51:34,672 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:51:34,673 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:634, output treesize:469 [2021-11-03 03:51:34,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,785 INFO L180 QuantifierPusher]: treesize reduction 54, result has 64.9 percent of original size [2021-11-03 03:51:34,787 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:51:34,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-03 03:51:34,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:34,807 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-03 03:51:34,807 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 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-03 03:51:34,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:34,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:34,810 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:51:34,816 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,816 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2021-11-03 03:51:34,823 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:34,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:34,827 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,828 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,829 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 03:51:34,831 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size 74 [2021-11-03 03:51:34,872 INFO L354 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2021-11-03 03:51:34,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2021-11-03 03:51:34,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,876 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,880 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,881 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:51:34,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 03:51:34,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 03:51:34,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,889 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-11-03 03:51:34,889 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:34,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,897 INFO L628 ElimStorePlain]: treesize reduction 19, result has 87.3 percent of original size [2021-11-03 03:51:34,899 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-11-03 03:51:34,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-11-03 03:51:34,902 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:34,902 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:128 [2021-11-03 03:51:34,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:34,946 INFO L180 QuantifierPusher]: treesize reduction 54, result has 63.5 percent of original size [2021-11-03 03:51:34,951 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:34,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:34,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:51:34,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-03 03:51:34,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:34,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:34,996 INFO L354 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2021-11-03 03:51:34,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2021-11-03 03:51:34,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:35,000 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:35,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:35,004 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:35,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:35,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:35,009 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 03:51:35,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 03:51:35,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:35,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 131 [2021-11-03 03:51:35,013 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:35,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:35,018 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:35,020 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:35,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-11-03 03:51:35,023 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:35,023 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:188 [2021-11-03 03:51:35,029 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:35,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:35,038 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:51:35,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:51:35,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:51:35,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2021-11-03 03:51:35,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215199120] [2021-11-03 03:51:35,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 03:51:35,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:51:35,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 03:51:35,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2021-11-03 03:51:35,412 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:35,557 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2021-11-03 03:51:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:51:35,558 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 03:51:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:35,559 INFO L225 Difference]: With dead ends: 55 [2021-11-03 03:51:35,559 INFO L226 Difference]: Without dead ends: 48 [2021-11-03 03:51:35,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=278, Unknown=0, NotChecked=0, Total=462 [2021-11-03 03:51:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-03 03:51:35,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 22. [2021-11-03 03:51:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:35,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-03 03:51:35,570 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2021-11-03 03:51:35,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:35,570 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-03 03:51:35,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-03 03:51:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 03:51:35,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:35,573 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:35,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:35,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:35,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:51:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:35,795 INFO L85 PathProgramCache]: Analyzing trace with hash -572813472, now seen corresponding path program 3 times [2021-11-03 03:51:35,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:51:35,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340569540] [2021-11-03 03:51:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:35,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:51:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-03 03:51:35,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:35,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340569540] [2021-11-03 03:51:35,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340569540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:51:35,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90104687] [2021-11-03 03:51:35,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 03:51:35,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:35,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:35,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:51:35,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 03:51:36,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 03:51:36,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:51:36,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 03:51:36,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-03 03:51:36,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-03 03:51:36,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90104687] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:36,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1714370303] [2021-11-03 03:51:36,655 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 03:51:36,655 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:51:36,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:51:36,655 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:51:36,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:51:36,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,662 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:36,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-03 03:51:36,671 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:36,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 03:51:36,674 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-03 03:51:36,677 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 78=[|v_#valid_34|]} [2021-11-03 03:51:36,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 27 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-03 03:51:36,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:36,720 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:36,721 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:36,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:36,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,819 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-03 03:51:36,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 66 [2021-11-03 03:51:36,820 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:36,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:36,824 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:36,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:36,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-03 03:51:36,838 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:36,838 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:236, output treesize:175 [2021-11-03 03:51:36,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:36,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 03:51:36,850 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size 204 [2021-11-03 03:51:36,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:36,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-11-03 03:51:36,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:51:36,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:51:36,873 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:36,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:36,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:36,895 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-03 03:51:36,898 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 03:51:36,899 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:36,899 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:205, output treesize:189 [2021-11-03 03:51:36,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:36,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:36,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:36,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,011 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,017 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 03:51:37,020 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,020 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-03 03:51:37,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 457 [2021-11-03 03:51:37,028 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,032 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,037 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 412 [2021-11-03 03:51:37,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 497 [2021-11-03 03:51:37,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:37,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:37,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-11-03 03:51:37,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:37,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:37,086 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:37,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:37,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:37,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:37,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:37,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:37,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2021-11-03 03:51:37,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,124 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:51:37,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:51:37,126 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:37,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,175 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,238 INFO L180 QuantifierPusher]: treesize reduction 124, result has 78.7 percent of original size [2021-11-03 03:51:37,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 459 [2021-11-03 03:51:37,257 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:51:37,257 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:619, output treesize:459 [2021-11-03 03:51:37,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,373 INFO L180 QuantifierPusher]: treesize reduction 54, result has 64.9 percent of original size [2021-11-03 03:51:37,374 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,375 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:51:37,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-03 03:51:37,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:37,393 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-03 03:51:37,393 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 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-03 03:51:37,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:37,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,400 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:37,401 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:37,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,406 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,407 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:51:37,408 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:37,408 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2021-11-03 03:51:37,414 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:37,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:37,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,421 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,422 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:51:37,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-11-03 03:51:37,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:37,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:37,466 INFO L354 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2021-11-03 03:51:37,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2021-11-03 03:51:37,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,469 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,471 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 03:51:37,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:37,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:37,481 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:37,486 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:37,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,492 INFO L628 ElimStorePlain]: treesize reduction 31, result has 84.8 percent of original size [2021-11-03 03:51:37,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-03 03:51:37,496 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:37,496 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:173 [2021-11-03 03:51:37,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,536 INFO L180 QuantifierPusher]: treesize reduction 54, result has 63.5 percent of original size [2021-11-03 03:51:37,538 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,539 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:51:37,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-03 03:51:37,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:37,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:37,578 INFO L354 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2021-11-03 03:51:37,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2021-11-03 03:51:37,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,581 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,584 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:37,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 03:51:37,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:37,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:37,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,592 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:37,592 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:37,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:37,598 INFO L628 ElimStorePlain]: treesize reduction 29, result has 85.6 percent of original size [2021-11-03 03:51:37,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:37,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-03 03:51:37,601 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:37,601 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:173 [2021-11-03 03:51:37,607 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:37,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:37,613 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:51:38,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:51:38,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:51:38,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2021-11-03 03:51:38,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303388889] [2021-11-03 03:51:38,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-03 03:51:38,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:51:38,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-03 03:51:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=577, Unknown=0, NotChecked=0, Total=992 [2021-11-03 03:51:38,061 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:38,408 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2021-11-03 03:51:38,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 03:51:38,409 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 03:51:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:38,412 INFO L225 Difference]: With dead ends: 124 [2021-11-03 03:51:38,413 INFO L226 Difference]: Without dead ends: 111 [2021-11-03 03:51:38,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 29 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=607, Invalid=953, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 03:51:38,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-03 03:51:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 40. [2021-11-03 03:51:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:38,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-03 03:51:38,427 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 20 [2021-11-03 03:51:38,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:38,427 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-03 03:51:38,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-03 03:51:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 03:51:38,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:38,431 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:38,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:38,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:38,646 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:51:38,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:38,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1831628238, now seen corresponding path program 4 times [2021-11-03 03:51:38,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:51:38,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042744440] [2021-11-03 03:51:38,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:38,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:51:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-03 03:51:38,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:38,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042744440] [2021-11-03 03:51:38,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042744440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:51:38,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795408003] [2021-11-03 03:51:38,963 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-03 03:51:38,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:38,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:38,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:51:38,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 03:51:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:39,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 03:51:39,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-03 03:51:39,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-03 03:51:40,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795408003] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:40,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959340481] [2021-11-03 03:51:40,036 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 03:51:40,036 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:51:40,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:51:40,036 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:51:40,037 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:51:40,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,046 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 03:51:40,048 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,048 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-03 03:51:40,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-03 03:51:40,054 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 78=[|v_#valid_35|]} [2021-11-03 03:51:40,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 27 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-03 03:51:40,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:40,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:40,095 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,205 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-03 03:51:40,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 66 [2021-11-03 03:51:40,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:40,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:40,212 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,221 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-03 03:51:40,227 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,227 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:236, output treesize:175 [2021-11-03 03:51:40,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,233 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 03:51:40,238 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size 204 [2021-11-03 03:51:40,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-11-03 03:51:40,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:51:40,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:51:40,260 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,274 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-03 03:51:40,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 03:51:40,278 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,279 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:205, output treesize:189 [2021-11-03 03:51:40,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,371 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,402 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,411 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 03:51:40,414 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-03 03:51:40,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 457 [2021-11-03 03:51:40,424 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 412 [2021-11-03 03:51:40,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 497 [2021-11-03 03:51:40,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-11-03 03:51:40,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:40,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:40,494 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:40,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2021-11-03 03:51:40,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:51:40,540 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:51:40,541 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,599 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,619 INFO L180 QuantifierPusher]: treesize reduction 124, result has 78.7 percent of original size [2021-11-03 03:51:40,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 459 [2021-11-03 03:51:40,627 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:51:40,627 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:619, output treesize:459 [2021-11-03 03:51:40,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,715 INFO L180 QuantifierPusher]: treesize reduction 54, result has 64.9 percent of original size [2021-11-03 03:51:40,717 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,718 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:51:40,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-03 03:51:40,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:40,735 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-03 03:51:40,736 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 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-03 03:51:40,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:40,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:40,742 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,745 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:51:40,748 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,748 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2021-11-03 03:51:40,754 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:40,756 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:40,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,759 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,760 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 03:51:40,761 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size 74 [2021-11-03 03:51:40,800 INFO L354 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2021-11-03 03:51:40,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2021-11-03 03:51:40,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,804 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,807 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 03:51:40,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:51:40,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:51:40,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:51:40,813 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:40,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,819 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,821 INFO L180 QuantifierPusher]: treesize reduction 11, result has 92.1 percent of original size [2021-11-03 03:51:40,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-11-03 03:51:40,824 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,825 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:129 [2021-11-03 03:51:40,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,862 INFO L180 QuantifierPusher]: treesize reduction 54, result has 63.5 percent of original size [2021-11-03 03:51:40,864 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:51:40,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-03 03:51:40,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:40,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:40,910 INFO L354 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2021-11-03 03:51:40,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2021-11-03 03:51:40,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,915 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,924 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:40,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 03:51:40,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:40,942 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:40,943 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:40,945 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:40,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:40,950 INFO L628 ElimStorePlain]: treesize reduction 29, result has 85.6 percent of original size [2021-11-03 03:51:40,951 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:40,953 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-03 03:51:40,953 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:40,954 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:173 [2021-11-03 03:51:40,959 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:40,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:40,965 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:51:41,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:51:41,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:51:41,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2021-11-03 03:51:41,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602778330] [2021-11-03 03:51:41,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-03 03:51:41,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:51:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-03 03:51:41,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1419, Invalid=1773, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 03:51:41,654 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:41,742 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2021-11-03 03:51:41,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 03:51:41,742 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-03 03:51:41,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:41,746 INFO L225 Difference]: With dead ends: 80 [2021-11-03 03:51:41,747 INFO L226 Difference]: Without dead ends: 58 [2021-11-03 03:51:41,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 17 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2906 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1419, Invalid=1773, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 03:51:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-03 03:51:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-03 03:51:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-11-03 03:51:41,764 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 38 [2021-11-03 03:51:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:41,765 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-11-03 03:51:41,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-11-03 03:51:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 03:51:41,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:41,770 INFO L513 BasicCegarLoop]: trace histogram [34, 16, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:41,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:41,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-11-03 03:51:41,985 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:51:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:41,986 INFO L85 PathProgramCache]: Analyzing trace with hash 977449870, now seen corresponding path program 5 times [2021-11-03 03:51:41,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:51:41,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951591263] [2021-11-03 03:51:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:41,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:51:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-03 03:51:42,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:42,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951591263] [2021-11-03 03:51:42,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951591263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:51:42,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827297157] [2021-11-03 03:51:42,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:51:42,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:42,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:42,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:51:42,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 03:51:47,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 03:51:47,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:51:47,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-03 03:51:47,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-11-03 03:51:47,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2021-11-03 03:51:48,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827297157] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:48,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [487099192] [2021-11-03 03:51:48,732 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-03 03:51:48,732 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 03:51:48,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 03:51:48,733 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 03:51:48,733 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 03:51:48,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,739 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:48,739 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-11-03 03:51:48,740 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:48,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-03 03:51:48,742 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-03 03:51:48,747 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_19|], 78=[|v_#valid_36|]} [2021-11-03 03:51:48,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 27 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-03 03:51:48,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,799 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:48,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-11-03 03:51:48,802 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:48,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:48,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,903 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-03 03:51:48,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 66 [2021-11-03 03:51:48,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:48,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 03:51:48,909 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:48,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:48,916 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-03 03:51:48,922 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:48,923 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:236, output treesize:175 [2021-11-03 03:51:48,926 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,928 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:48,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-03 03:51:48,932 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size 204 [2021-11-03 03:51:48,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:48,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2021-11-03 03:51:48,952 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:51:48,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-03 03:51:48,955 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:48,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:48,963 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:48,966 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-03 03:51:48,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-03 03:51:48,969 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:48,969 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:205, output treesize:189 [2021-11-03 03:51:48,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:48,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,057 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,063 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-11-03 03:51:49,065 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-03 03:51:49,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 457 [2021-11-03 03:51:49,072 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 412 [2021-11-03 03:51:49,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 497 [2021-11-03 03:51:49,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:49,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:49,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:49,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 47 [2021-11-03 03:51:49,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:49,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,126 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-11-03 03:51:49,127 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:49,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:49,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:49,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:49,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:49,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 03:51:49,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 67 [2021-11-03 03:51:49,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,167 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:51:49,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 03:51:49,169 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:49,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,209 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,238 INFO L180 QuantifierPusher]: treesize reduction 124, result has 78.7 percent of original size [2021-11-03 03:51:49,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 459 [2021-11-03 03:51:49,245 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 03:51:49,246 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:619, output treesize:459 [2021-11-03 03:51:49,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,314 INFO L180 QuantifierPusher]: treesize reduction 54, result has 64.9 percent of original size [2021-11-03 03:51:49,315 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-11-03 03:51:49,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-03 03:51:49,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:49,332 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-03 03:51:49,332 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 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-03 03:51:49,333 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:49,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-11-03 03:51:49,334 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 03:51:49,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-03 03:51:49,339 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:49,340 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:85 [2021-11-03 03:51:49,344 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:49,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:49,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,349 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-03 03:51:49,350 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size 74 [2021-11-03 03:51:49,385 INFO L354 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2021-11-03 03:51:49,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2021-11-03 03:51:49,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,388 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,389 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 03:51:49,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 03:51:49,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-11-03 03:51:49,395 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:49,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,400 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-11-03 03:51:49,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-11-03 03:51:49,402 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:49,402 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:76, output treesize:136 [2021-11-03 03:51:49,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,431 INFO L180 QuantifierPusher]: treesize reduction 54, result has 63.5 percent of original size [2021-11-03 03:51:49,432 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,433 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,433 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-03 03:51:49,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-03 03:51:49,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:49,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:49,473 INFO L354 Elim1Store]: treesize reduction 38, result has 51.9 percent of original size [2021-11-03 03:51:49,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 55 [2021-11-03 03:51:49,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,476 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,477 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,478 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 03:51:49,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-03 03:51:49,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:49,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:49,483 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,484 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-03 03:51:49,484 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-11-03 03:51:49,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 03:51:49,494 INFO L628 ElimStorePlain]: treesize reduction 29, result has 85.6 percent of original size [2021-11-03 03:51:49,497 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:51:49,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-03 03:51:49,499 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 03:51:49,499 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:173 [2021-11-03 03:51:49,505 INFO L180 QuantifierPusher]: treesize reduction 55, result has 51.8 percent of original size [2021-11-03 03:51:49,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 03:51:49,511 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 03:51:50,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 03:51:50,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 03:51:50,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 19, 19] total 72 [2021-11-03 03:51:50,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581465649] [2021-11-03 03:51:50,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-11-03 03:51:50,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:51:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-11-03 03:51:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2629, Invalid=3223, Unknown=0, NotChecked=0, Total=5852 [2021-11-03 03:51:50,568 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 73 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:52,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:52,518 INFO L93 Difference]: Finished difference Result 385 states and 442 transitions. [2021-11-03 03:51:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-03 03:51:52,519 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 03:51:52,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:52,521 INFO L225 Difference]: With dead ends: 385 [2021-11-03 03:51:52,521 INFO L226 Difference]: Without dead ends: 363 [2021-11-03 03:51:52,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 110 SyntacticMatches, 17 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5666 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4729, Invalid=7703, Unknown=0, NotChecked=0, Total=12432 [2021-11-03 03:51:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-03 03:51:52,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 112. [2021-11-03 03:51:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.027027027027027) internal successors, (114), 111 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 114 transitions. [2021-11-03 03:51:52,541 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 114 transitions. Word has length 56 [2021-11-03 03:51:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:52,542 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 114 transitions. [2021-11-03 03:51:52,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 72 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:51:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 114 transitions. [2021-11-03 03:51:52,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 03:51:52,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:52,544 INFO L513 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:52,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-03 03:51:52,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-11-03 03:51:52,756 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:51:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:52,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2002387634, now seen corresponding path program 6 times [2021-11-03 03:51:52,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:51:52,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129504309] [2021-11-03 03:51:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:52,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:51:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2021-11-03 03:51:54,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:51:54,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129504309] [2021-11-03 03:51:54,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129504309] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 03:51:54,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619682007] [2021-11-03 03:51:54,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 03:51:54,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:54,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:54,193 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:51:54,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17fbb6bf-2825-47cb-9ff8-46ccbf26f679/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process