./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V --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 64bit --witnessprinter.graph.data.programhash 80ccff96bb4644269e1ce6d8eb8d6f93859589318842a9f290454700795f0f83 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:59:57,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:59:57,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:59:57,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:59:57,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:59:57,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:59:57,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:59:57,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:59:57,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:59:57,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:59:57,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:59:57,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:59:57,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:59:57,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:59:57,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:59:57,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:59:57,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:59:57,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:59:57,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:59:57,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:59:57,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:59:57,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:59:57,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:59:57,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:59:57,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:59:57,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:59:57,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:59:57,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:59:57,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:59:57,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:59:57,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:59:57,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:59:57,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:59:57,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:59:57,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:59:57,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:59:57,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:59:57,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:59:57,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:59:57,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:59:57,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:59:57,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 01:59:57,608 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:59:57,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:59:57,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 01:59:57,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 01:59:57,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:59:57,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 01:59:57,611 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 01:59:57,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 01:59:57,612 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 01:59:57,613 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 01:59:57,613 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 01:59:57,613 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 01:59:57,614 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 01:59:57,614 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 01:59:57,615 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 01:59:57,615 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 01:59:57,616 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 01:59:57,616 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 01:59:57,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:59:57,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:59:57,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:59:57,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:59:57,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:59:57,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:59:57,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:59:57,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:59:57,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:59:57,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:59:57,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 01:59:57,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 01:59:57,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:59:57,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:59:57,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:59:57,623 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 01:59:57,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:59:57,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:59:57,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 01:59:57,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 01:59:57,625 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_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80ccff96bb4644269e1ce6d8eb8d6f93859589318842a9f290454700795f0f83 [2021-11-23 01:59:57,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:59:57,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:59:57,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:59:57,957 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:59:57,958 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:59:57,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-23 01:59:58,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/data/95ab4dbc5/386c12e7239b49518a668374d99558d4/FLAGdce39d717 [2021-11-23 01:59:59,516 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:59:59,517 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-23 01:59:59,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/data/95ab4dbc5/386c12e7239b49518a668374d99558d4/FLAGdce39d717 [2021-11-23 02:00:00,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/data/95ab4dbc5/386c12e7239b49518a668374d99558d4 [2021-11-23 02:00:00,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:00:00,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:00:00,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:00:00,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:00:00,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:00:00,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:00" (1/1) ... [2021-11-23 02:00:00,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a448bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:00, skipping insertion in model container [2021-11-23 02:00:00,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:00:00" (1/1) ... [2021-11-23 02:00:00,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:00:00,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:00:11,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[896432,896445] [2021-11-23 02:00:11,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:00:11,594 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:00:13,011 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[896432,896445] [2021-11-23 02:00:13,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:00:13,692 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:00:13,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13 WrapperNode [2021-11-23 02:00:13,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:00:13,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:00:13,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:00:13,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:00:13,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:14,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:15,093 INFO L137 Inliner]: procedures = 697, calls = 16145, calls flagged for inlining = 386, calls inlined = 339, statements flattened = 29246 [2021-11-23 02:00:15,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:00:15,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:00:15,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:00:15,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:00:15,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:15,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:15,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:15,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:16,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:16,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:17,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:17,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:00:17,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:00:17,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:00:17,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:00:17,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (1/1) ... [2021-11-23 02:00:17,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:00:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:00:17,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:00:17,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:00:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:00:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:00:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-23 02:00:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-23 02:00:17,706 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-23 02:00:17,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-23 02:00:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-23 02:00:17,707 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-23 02:00:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-23 02:00:17,707 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-23 02:00:17,707 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-23 02:00:17,707 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-23 02:00:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-23 02:00:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-23 02:00:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:00:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:00:17,708 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-23 02:00:17,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-23 02:00:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-23 02:00:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-23 02:00:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:00:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:00:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-23 02:00:17,709 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-23 02:00:17,709 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-23 02:00:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-23 02:00:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:00:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:00:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-23 02:00:17,710 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-23 02:00:17,710 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-23 02:00:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-23 02:00:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-23 02:00:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-23 02:00:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:00:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:00:17,711 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-23 02:00:17,712 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-23 02:00:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-23 02:00:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-23 02:00:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-23 02:00:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-23 02:00:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-23 02:00:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-23 02:00:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-23 02:00:17,713 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-23 02:00:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:00:17,714 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:00:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 02:00:17,715 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 02:00:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-23 02:00:17,716 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-23 02:00:17,716 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-23 02:00:17,716 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-23 02:00:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:00:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:00:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-23 02:00:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-23 02:00:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-23 02:00:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-23 02:00:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:00:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:00:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-23 02:00:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-23 02:00:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-23 02:00:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-23 02:00:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-23 02:00:17,719 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-23 02:00:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-23 02:00:17,720 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-23 02:00:17,720 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:00:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:00:17,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:00:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:00:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:00:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:00:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 02:00:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 02:00:17,722 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:00:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:00:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:00:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:00:17,723 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:00:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:00:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-23 02:00:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-23 02:00:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:00:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-23 02:00:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-23 02:00:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-23 02:00:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-23 02:00:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-23 02:00:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-23 02:00:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-23 02:00:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-23 02:00:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-23 02:00:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-23 02:00:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-23 02:00:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-23 02:00:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-23 02:00:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-23 02:00:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:00:17,728 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:00:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-23 02:00:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-23 02:00:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-23 02:00:17,729 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-23 02:00:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-23 02:00:17,730 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-23 02:00:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:00:17,731 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:00:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:00:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:00:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-23 02:00:17,734 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-23 02:00:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-23 02:00:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-23 02:00:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:00:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-23 02:00:17,736 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-23 02:00:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-23 02:00:17,743 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-23 02:00:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-23 02:00:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-23 02:00:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-23 02:00:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-23 02:00:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:00:17,744 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:00:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-23 02:00:17,745 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-23 02:00:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:00:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:00:17,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:00:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-23 02:00:17,745 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-23 02:00:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:00:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:00:17,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:00:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-23 02:00:17,746 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-23 02:00:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-23 02:00:17,746 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-23 02:00:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-23 02:00:17,747 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-23 02:00:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:00:17,747 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:00:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-23 02:00:17,747 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-23 02:00:17,747 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-23 02:00:17,748 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-23 02:00:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 02:00:17,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 02:00:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-23 02:00:17,748 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-23 02:00:17,748 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-23 02:00:17,749 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-23 02:00:17,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:00:17,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:00:17,749 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-23 02:00:17,749 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-23 02:00:17,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:00:17,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:00:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-23 02:00:17,750 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-23 02:00:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-23 02:00:17,750 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-23 02:00:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-23 02:00:17,750 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-23 02:00:17,750 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:00:17,751 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:00:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-23 02:00:17,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-23 02:00:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-23 02:00:17,751 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-23 02:00:17,751 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-23 02:00:17,751 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-23 02:00:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-23 02:00:17,752 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-23 02:00:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-23 02:00:17,752 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-23 02:00:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:00:17,752 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-23 02:00:17,752 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-23 02:00:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-23 02:00:17,753 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-23 02:00:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:00:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-23 02:00:17,753 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-23 02:00:17,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:00:17,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:00:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:00:17,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:00:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:00:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-23 02:00:17,754 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-23 02:00:17,754 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:00:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-23 02:00:17,755 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-23 02:00:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:00:17,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:00:17,755 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-23 02:00:17,755 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-23 02:00:17,756 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-23 02:00:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-23 02:00:17,756 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-23 02:00:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-23 02:00:17,756 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-23 02:00:17,756 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-23 02:00:17,756 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:00:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:00:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-23 02:00:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-23 02:00:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-23 02:00:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-23 02:00:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-23 02:00:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-23 02:00:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:00:17,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:00:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-23 02:00:17,758 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-23 02:00:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:00:17,758 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:00:17,758 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-23 02:00:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-23 02:00:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 02:00:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 02:00:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-23 02:00:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-23 02:00:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-23 02:00:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-23 02:00:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 02:00:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 02:00:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-23 02:00:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-23 02:00:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-23 02:00:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-23 02:00:17,761 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-23 02:00:17,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-23 02:00:17,762 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-23 02:00:17,765 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-23 02:00:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-23 02:00:17,766 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-23 02:00:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-23 02:00:17,766 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-23 02:00:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-23 02:00:17,766 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-23 02:00:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 02:00:17,767 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 02:00:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:00:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:00:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-23 02:00:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-23 02:00:17,768 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-23 02:00:17,768 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-23 02:00:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-23 02:00:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-23 02:00:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-23 02:00:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-23 02:00:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:00:17,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:00:17,769 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-23 02:00:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-23 02:00:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-23 02:00:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-23 02:00:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-23 02:00:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-23 02:00:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-23 02:00:17,770 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-23 02:00:17,770 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-23 02:00:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-23 02:00:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:00:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:00:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-23 02:00:17,771 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-23 02:00:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:00:17,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:00:17,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:00:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:00:17,772 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 02:00:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 02:00:17,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-23 02:00:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-23 02:00:17,772 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 02:00:17,772 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 02:00:17,773 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-23 02:00:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-23 02:00:17,773 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 02:00:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 02:00:17,773 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 02:00:17,773 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-23 02:00:17,773 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-23 02:00:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 02:00:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 02:00:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-23 02:00:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-23 02:00:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-23 02:00:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-23 02:00:17,774 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-23 02:00:17,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-23 02:00:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-23 02:00:17,775 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-23 02:00:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:00:17,775 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:00:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:00:17,775 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:00:17,775 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-23 02:00:17,776 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-23 02:00:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-23 02:00:17,776 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-23 02:00:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-23 02:00:17,776 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-23 02:00:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-23 02:00:17,776 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-23 02:00:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:00:17,777 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:00:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-23 02:00:17,777 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-23 02:00:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-23 02:00:17,777 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-23 02:00:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-23 02:00:17,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-23 02:00:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-23 02:00:17,778 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-23 02:00:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-23 02:00:17,778 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-23 02:00:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-23 02:00:17,778 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-23 02:00:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-23 02:00:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-23 02:00:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:00:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:00:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:00:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:00:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-23 02:00:17,779 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-23 02:00:17,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:00:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:00:17,780 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:00:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-23 02:00:17,780 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-23 02:00:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:00:17,780 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:00:17,780 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-23 02:00:17,781 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-23 02:00:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:00:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-23 02:00:17,781 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-23 02:00:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 02:00:17,781 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 02:00:17,781 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-23 02:00:17,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-23 02:00:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-23 02:00:17,782 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-23 02:00:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-23 02:00:17,782 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-23 02:00:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-23 02:00:17,782 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-23 02:00:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:00:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-23 02:00:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-23 02:00:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-23 02:00:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-23 02:00:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-23 02:00:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-23 02:00:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-23 02:00:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-23 02:00:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-23 02:00:17,784 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-23 02:00:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 02:00:17,784 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 02:00:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-23 02:00:17,784 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-23 02:00:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:00:17,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:00:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-23 02:00:17,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-23 02:00:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:00:17,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:00:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:00:17,786 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:00:17,786 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-23 02:00:17,786 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-23 02:00:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 02:00:17,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 02:00:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-23 02:00:17,787 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-23 02:00:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-23 02:00:17,787 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-23 02:00:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-23 02:00:17,788 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-23 02:00:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-23 02:00:17,788 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-23 02:00:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-23 02:00:17,788 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-23 02:00:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-23 02:00:17,788 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-23 02:00:17,788 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-23 02:00:17,789 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-23 02:00:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-23 02:00:17,789 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-23 02:00:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 02:00:17,789 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 02:00:17,789 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 02:00:17,789 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 02:00:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:00:17,790 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:00:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-23 02:00:17,790 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-23 02:00:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-23 02:00:17,790 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-23 02:00:17,790 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-23 02:00:17,790 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-23 02:00:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-23 02:00:17,791 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-23 02:00:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-23 02:00:17,791 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-23 02:00:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-23 02:00:17,791 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-23 02:00:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:00:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:00:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-23 02:00:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-23 02:00:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-23 02:00:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-23 02:00:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-23 02:00:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-23 02:00:17,792 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:00:17,793 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:00:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-23 02:00:17,793 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-23 02:00:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-23 02:00:17,793 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-23 02:00:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:00:17,793 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-23 02:00:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-23 02:00:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:00:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:00:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-23 02:00:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-23 02:00:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-23 02:00:17,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-23 02:00:17,794 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-23 02:00:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-23 02:00:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:00:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:00:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-23 02:00:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-23 02:00:17,795 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-23 02:00:17,795 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-23 02:00:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-23 02:00:17,796 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-23 02:00:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-23 02:00:17,796 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-23 02:00:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 02:00:17,796 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 02:00:17,796 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-23 02:00:17,796 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-23 02:00:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-23 02:00:17,797 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-23 02:00:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-23 02:00:17,797 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-23 02:00:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-23 02:00:17,797 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-23 02:00:17,797 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-23 02:00:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-23 02:00:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_10 [2021-11-23 02:00:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_10 [2021-11-23 02:00:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-23 02:00:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-23 02:00:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-23 02:00:17,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-23 02:00:17,798 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-23 02:00:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-23 02:00:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:00:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:00:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 02:00:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 02:00:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-23 02:00:17,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-23 02:00:17,799 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 02:00:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 02:00:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-23 02:00:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-23 02:00:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-23 02:00:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-23 02:00:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 02:00:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 02:00:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-23 02:00:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-23 02:00:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:00:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:00:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 02:00:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 02:00:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 02:00:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 02:00:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-23 02:00:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:00:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-23 02:00:17,802 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-23 02:00:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-23 02:00:17,802 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-23 02:00:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:00:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:00:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 02:00:20,502 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:00:20,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:00:22,157 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:01:29,692 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:01:38,396 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:01:38,396 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-23 02:01:38,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:38 BoogieIcfgContainer [2021-11-23 02:01:38,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:01:38,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:01:38,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:01:38,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:01:38,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:00:00" (1/3) ... [2021-11-23 02:01:38,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec9d0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:38, skipping insertion in model container [2021-11-23 02:01:38,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:00:13" (2/3) ... [2021-11-23 02:01:38,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec9d0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:01:38, skipping insertion in model container [2021-11-23 02:01:38,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:01:38" (3/3) ... [2021-11-23 02:01:38,422 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-23 02:01:38,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:01:38,429 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:01:38,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:01:38,543 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 [2021-11-23 02:01:38,544 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:01:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 6539 states, 4176 states have (on average 1.335727969348659) internal successors, (5578), 4282 states have internal predecessors, (5578), 2122 states have call successors, (2122), 242 states have call predecessors, (2122), 241 states have return successors, (2118), 2105 states have call predecessors, (2118), 2118 states have call successors, (2118) [2021-11-23 02:01:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 02:01:38,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:01:38,721 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:01:38,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:01:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:01:38,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1101434559, now seen corresponding path program 1 times [2021-11-23 02:01:38,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:01:38,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198624196] [2021-11-23 02:01:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:01:38,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:01:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:01:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 02:01:40,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:01:40,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198624196] [2021-11-23 02:01:40,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198624196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:01:40,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:01:40,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:01:40,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739576982] [2021-11-23 02:01:40,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:01:40,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:01:40,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:01:40,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:01:40,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:01:40,510 INFO L87 Difference]: Start difference. First operand has 6539 states, 4176 states have (on average 1.335727969348659) internal successors, (5578), 4282 states have internal predecessors, (5578), 2122 states have call successors, (2122), 242 states have call predecessors, (2122), 241 states have return successors, (2118), 2105 states have call predecessors, (2118), 2118 states have call successors, (2118) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 02:01:43,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:54,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:56,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:01:58,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:11,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:13,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:16,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:02:17,391 INFO L93 Difference]: Finished difference Result 17283 states and 25946 transitions. [2021-11-23 02:02:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:02:17,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2021-11-23 02:02:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:02:17,575 INFO L225 Difference]: With dead ends: 17283 [2021-11-23 02:02:17,576 INFO L226 Difference]: Without dead ends: 10716 [2021-11-23 02:02:17,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:02:17,673 INFO L933 BasicCegarLoop]: 10754 mSDtfsCounter, 6288 mSDsluCounter, 21359 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6290 SdHoareTripleChecker+Valid, 30472 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:02:17,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6290 Valid, 30472 Invalid, 2491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2484 Invalid, 6 Unknown, 0 Unchecked, 35.9s Time] [2021-11-23 02:02:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2021-11-23 02:02:19,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10710. [2021-11-23 02:02:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10710 states, 6808 states have (on average 1.3279964747356052) internal successors, (9041), 6966 states have internal predecessors, (9041), 3477 states have call successors, (3477), 425 states have call predecessors, (3477), 424 states have return successors, (3475), 3460 states have call predecessors, (3475), 3475 states have call successors, (3475) [2021-11-23 02:02:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10710 states to 10710 states and 15993 transitions. [2021-11-23 02:02:19,502 INFO L78 Accepts]: Start accepts. Automaton has 10710 states and 15993 transitions. Word has length 34 [2021-11-23 02:02:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:02:19,503 INFO L470 AbstractCegarLoop]: Abstraction has 10710 states and 15993 transitions. [2021-11-23 02:02:19,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 02:02:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 10710 states and 15993 transitions. [2021-11-23 02:02:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-23 02:02:19,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:02:19,564 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:02:19,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:02:19,565 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:02:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:02:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash 219520837, now seen corresponding path program 1 times [2021-11-23 02:02:19,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:02:19,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434158953] [2021-11-23 02:02:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:02:19,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:02:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:02:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-23 02:02:21,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:02:21,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434158953] [2021-11-23 02:02:21,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434158953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:02:21,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:02:21,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:02:21,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526195512] [2021-11-23 02:02:21,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:02:21,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:02:21,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:02:21,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:02:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:02:21,642 INFO L87 Difference]: Start difference. First operand 10710 states and 15993 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 02:02:24,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:26,590 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:29,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:36,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:38,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:40,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:46,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:48,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:55,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:02:58,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:00,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:03,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:03:03,693 INFO L93 Difference]: Finished difference Result 13917 states and 20569 transitions. [2021-11-23 02:03:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:03:03,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 241 [2021-11-23 02:03:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:03:03,890 INFO L225 Difference]: With dead ends: 13917 [2021-11-23 02:03:03,890 INFO L226 Difference]: Without dead ends: 13885 [2021-11-23 02:03:03,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:03:03,899 INFO L933 BasicCegarLoop]: 10080 mSDtfsCounter, 3875 mSDsluCounter, 20646 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3879 SdHoareTripleChecker+Valid, 29112 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:03:03,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3879 Valid, 29112 Invalid, 2437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2427 Invalid, 10 Unknown, 0 Unchecked, 41.4s Time] [2021-11-23 02:03:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13885 states. [2021-11-23 02:03:04,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13885 to 13849. [2021-11-23 02:03:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13849 states, 8709 states have (on average 1.317832127684005) internal successors, (11477), 8928 states have internal predecessors, (11477), 4500 states have call successors, (4500), 641 states have call predecessors, (4500), 639 states have return successors, (4498), 4479 states have call predecessors, (4498), 4498 states have call successors, (4498) [2021-11-23 02:03:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13849 states to 13849 states and 20475 transitions. [2021-11-23 02:03:05,039 INFO L78 Accepts]: Start accepts. Automaton has 13849 states and 20475 transitions. Word has length 241 [2021-11-23 02:03:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:03:05,041 INFO L470 AbstractCegarLoop]: Abstraction has 13849 states and 20475 transitions. [2021-11-23 02:03:05,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 02:03:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 13849 states and 20475 transitions. [2021-11-23 02:03:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2021-11-23 02:03:05,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:03:05,199 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 11, 9, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:03:05,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:03:05,199 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:03:05,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:03:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash -596574863, now seen corresponding path program 1 times [2021-11-23 02:03:05,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:03:05,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935225638] [2021-11-23 02:03:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:03:05,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:03:05,896 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:03:05,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894980125] [2021-11-23 02:03:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:03:05,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:03:05,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:03:05,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:03:05,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:03:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:03:10,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 18502 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:03:10,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:03:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-11-23 02:03:11,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:03:11,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:03:11,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935225638] [2021-11-23 02:03:11,979 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:03:11,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894980125] [2021-11-23 02:03:11,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894980125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:03:11,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:03:11,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:03:11,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330195530] [2021-11-23 02:03:11,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:03:11,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:03:11,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:03:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:03:11,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:03:11,983 INFO L87 Difference]: Start difference. First operand 13849 states and 20475 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2021-11-23 02:03:14,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:23,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:25,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:28,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:32,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:39,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:42,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:44,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:03:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:03:44,844 INFO L93 Difference]: Finished difference Result 23856 states and 35381 transitions. [2021-11-23 02:03:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:03:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) Word has length 692 [2021-11-23 02:03:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:03:44,949 INFO L225 Difference]: With dead ends: 23856 [2021-11-23 02:03:44,949 INFO L226 Difference]: Without dead ends: 14663 [2021-11-23 02:03:45,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:03:45,030 INFO L933 BasicCegarLoop]: 9419 mSDtfsCounter, 452 mSDsluCounter, 19877 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 113 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 27678 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:03:45,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 27678 Invalid, 2626 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [113 Valid, 2505 Invalid, 8 Unknown, 0 Unchecked, 32.3s Time] [2021-11-23 02:03:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14663 states. [2021-11-23 02:03:46,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14663 to 13853. [2021-11-23 02:03:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13853 states, 8713 states have (on average 1.3176862159990819) internal successors, (11481), 8932 states have internal predecessors, (11481), 4500 states have call successors, (4500), 641 states have call predecessors, (4500), 639 states have return successors, (4498), 4479 states have call predecessors, (4498), 4498 states have call successors, (4498) [2021-11-23 02:03:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13853 states to 13853 states and 20479 transitions. [2021-11-23 02:03:46,268 INFO L78 Accepts]: Start accepts. Automaton has 13853 states and 20479 transitions. Word has length 692 [2021-11-23 02:03:46,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:03:46,271 INFO L470 AbstractCegarLoop]: Abstraction has 13853 states and 20479 transitions. [2021-11-23 02:03:46,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 2 states have call successors, (102), 2 states have call predecessors, (102), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2021-11-23 02:03:46,271 INFO L276 IsEmpty]: Start isEmpty. Operand 13853 states and 20479 transitions. [2021-11-23 02:03:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2021-11-23 02:03:46,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:03:46,397 INFO L514 BasicCegarLoop]: trace histogram [19, 14, 14, 11, 9, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:03:46,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:03:46,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 02:03:46,611 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:03:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:03:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash 506158083, now seen corresponding path program 1 times [2021-11-23 02:03:46,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:03:46,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334649290] [2021-11-23 02:03:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:03:46,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:03:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:03:47,673 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:03:47,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334649290] [2021-11-23 02:03:47,674 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:03:47,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692327827] [2021-11-23 02:03:47,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:03:47,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:03:47,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:03:47,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:03:47,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:03:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:03:52,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 18600 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:03:52,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:03:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2021-11-23 02:03:54,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:03:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692327827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:03:54,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:03:54,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:03:54,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631158704] [2021-11-23 02:03:54,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:03:54,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:03:54,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:03:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:03:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:03:54,185 INFO L87 Difference]: Start difference. First operand 13853 states and 20479 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2021-11-23 02:03:57,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:06,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:08,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:10,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:14,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:22,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:24,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:26,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:29,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:04:29,308 INFO L93 Difference]: Finished difference Result 23384 states and 34639 transitions. [2021-11-23 02:04:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:04:29,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 710 [2021-11-23 02:04:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:04:29,413 INFO L225 Difference]: With dead ends: 23384 [2021-11-23 02:04:29,413 INFO L226 Difference]: Without dead ends: 14187 [2021-11-23 02:04:29,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:04:29,480 INFO L933 BasicCegarLoop]: 9224 mSDtfsCounter, 329 mSDsluCounter, 19663 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 123 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 27291 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:04:29,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 27291 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2431 Invalid, 8 Unknown, 0 Unchecked, 34.6s Time] [2021-11-23 02:04:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14187 states. [2021-11-23 02:04:30,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14187 to 13857. [2021-11-23 02:04:30,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13857 states, 8717 states have (on average 1.3175404382241598) internal successors, (11485), 8936 states have internal predecessors, (11485), 4500 states have call successors, (4500), 641 states have call predecessors, (4500), 639 states have return successors, (4498), 4479 states have call predecessors, (4498), 4498 states have call successors, (4498) [2021-11-23 02:04:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 20483 transitions. [2021-11-23 02:04:30,706 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 20483 transitions. Word has length 710 [2021-11-23 02:04:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:04:30,709 INFO L470 AbstractCegarLoop]: Abstraction has 13857 states and 20483 transitions. [2021-11-23 02:04:30,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2021-11-23 02:04:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 20483 transitions. [2021-11-23 02:04:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 714 [2021-11-23 02:04:30,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:04:30,796 INFO L514 BasicCegarLoop]: trace histogram [19, 14, 14, 11, 9, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:04:30,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:04:31,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:04:31,023 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:04:31,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:04:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1588341872, now seen corresponding path program 1 times [2021-11-23 02:04:31,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:04:31,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146469817] [2021-11-23 02:04:31,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:31,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:04:31,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:04:31,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554961863] [2021-11-23 02:04:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:04:31,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:04:31,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:04:31,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:04:31,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:04:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:04:36,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 18610 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:04:36,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:04:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-11-23 02:04:38,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:04:38,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:04:38,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146469817] [2021-11-23 02:04:38,030 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:04:38,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554961863] [2021-11-23 02:04:38,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554961863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:04:38,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:04:38,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:04:38,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272262044] [2021-11-23 02:04:38,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:04:38,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:04:38,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:04:38,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:04:38,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:04:38,034 INFO L87 Difference]: Start difference. First operand 13857 states and 20483 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2021-11-23 02:04:41,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:46,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:50,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:52,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:55,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:04:59,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:05,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:08,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:11,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:13,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:05:13,671 INFO L93 Difference]: Finished difference Result 23852 states and 35368 transitions. [2021-11-23 02:05:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:05:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 713 [2021-11-23 02:05:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:05:13,764 INFO L225 Difference]: With dead ends: 23852 [2021-11-23 02:05:13,764 INFO L226 Difference]: Without dead ends: 14651 [2021-11-23 02:05:13,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:05:13,819 INFO L933 BasicCegarLoop]: 9421 mSDtfsCounter, 333 mSDsluCounter, 20040 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 109 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 27823 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:05:13,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 27823 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2531 Invalid, 8 Unknown, 0 Unchecked, 35.2s Time] [2021-11-23 02:05:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14651 states. [2021-11-23 02:05:14,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14651 to 13861. [2021-11-23 02:05:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13861 states, 8721 states have (on average 1.31739479417498) internal successors, (11489), 8940 states have internal predecessors, (11489), 4500 states have call successors, (4500), 641 states have call predecessors, (4500), 639 states have return successors, (4498), 4479 states have call predecessors, (4498), 4498 states have call successors, (4498) [2021-11-23 02:05:14,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13861 states to 13861 states and 20487 transitions. [2021-11-23 02:05:14,868 INFO L78 Accepts]: Start accepts. Automaton has 13861 states and 20487 transitions. Word has length 713 [2021-11-23 02:05:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:05:14,870 INFO L470 AbstractCegarLoop]: Abstraction has 13861 states and 20487 transitions. [2021-11-23 02:05:14,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2021-11-23 02:05:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 13861 states and 20487 transitions. [2021-11-23 02:05:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2021-11-23 02:05:15,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:05:15,097 INFO L514 BasicCegarLoop]: trace histogram [15, 13, 13, 8, 7, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:05:15,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:05:15,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:05:15,315 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:05:15,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:05:15,316 INFO L85 PathProgramCache]: Analyzing trace with hash 879274508, now seen corresponding path program 1 times [2021-11-23 02:05:15,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:05:15,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006299714] [2021-11-23 02:05:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:05:15,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:05:15,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:05:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867264075] [2021-11-23 02:05:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:05:15,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:05:15,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:05:15,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:05:15,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:05:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:05:20,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 18132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:05:20,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:05:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2021-11-23 02:05:20,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:05:20,939 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:05:20,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006299714] [2021-11-23 02:05:20,939 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:05:20,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867264075] [2021-11-23 02:05:20,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867264075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:05:20,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:05:20,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:05:20,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994510548] [2021-11-23 02:05:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:05:20,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:05:20,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:05:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:05:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:05:20,942 INFO L87 Difference]: Start difference. First operand 13861 states and 20487 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 3 states have call successors, (111), 2 states have call predecessors, (111), 2 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2021-11-23 02:05:23,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:29,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:31,584 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:33,734 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:36,696 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:44,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:47,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:49,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:05:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:05:49,803 INFO L93 Difference]: Finished difference Result 21642 states and 32279 transitions. [2021-11-23 02:05:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:05:49,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 3 states have call successors, (111), 2 states have call predecessors, (111), 2 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) Word has length 643 [2021-11-23 02:05:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:05:49,989 INFO L225 Difference]: With dead ends: 21642 [2021-11-23 02:05:49,989 INFO L226 Difference]: Without dead ends: 15130 [2021-11-23 02:05:50,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:05:50,024 INFO L933 BasicCegarLoop]: 10740 mSDtfsCounter, 1085 mSDsluCounter, 10228 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 20171 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:05:50,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 20171 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1855 Invalid, 8 Unknown, 0 Unchecked, 28.5s Time] [2021-11-23 02:05:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15130 states. [2021-11-23 02:05:50,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15130 to 13866. [2021-11-23 02:05:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13866 states, 8725 states have (on average 1.3173638968481376) internal successors, (11494), 8944 states have internal predecessors, (11494), 4501 states have call successors, (4501), 641 states have call predecessors, (4501), 639 states have return successors, (4499), 4480 states have call predecessors, (4499), 4499 states have call successors, (4499) [2021-11-23 02:05:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13866 states to 13866 states and 20494 transitions. [2021-11-23 02:05:51,012 INFO L78 Accepts]: Start accepts. Automaton has 13866 states and 20494 transitions. Word has length 643 [2021-11-23 02:05:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:05:51,013 INFO L470 AbstractCegarLoop]: Abstraction has 13866 states and 20494 transitions. [2021-11-23 02:05:51,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 3 states have call successors, (111), 2 states have call predecessors, (111), 2 states have return successors, (110), 3 states have call predecessors, (110), 3 states have call successors, (110) [2021-11-23 02:05:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 13866 states and 20494 transitions. [2021-11-23 02:05:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2021-11-23 02:05:51,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:05:51,084 INFO L514 BasicCegarLoop]: trace histogram [19, 14, 14, 12, 9, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:05:51,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 02:05:51,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:05:51,298 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:05:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:05:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 738505777, now seen corresponding path program 1 times [2021-11-23 02:05:51,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:05:51,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349121541] [2021-11-23 02:05:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:05:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:05:51,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:05:51,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731900159] [2021-11-23 02:05:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:05:51,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:05:51,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:05:51,917 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:05:51,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:05:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:05:56,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 18723 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:05:56,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:05:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2021-11-23 02:05:57,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:05:57,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:05:57,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349121541] [2021-11-23 02:05:57,567 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:05:57,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731900159] [2021-11-23 02:05:57,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731900159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:05:57,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:05:57,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:05:57,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271658385] [2021-11-23 02:05:57,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:05:57,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:05:57,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:05:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:05:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:05:57,569 INFO L87 Difference]: Start difference. First operand 13866 states and 20494 transitions. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-11-23 02:06:00,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:07,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:10,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:12,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:14,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:18,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:24,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:26,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:29,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:31,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:33,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:35,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:37,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:06:37,898 INFO L93 Difference]: Finished difference Result 23410 states and 34669 transitions. [2021-11-23 02:06:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:06:37,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 732 [2021-11-23 02:06:37,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:06:37,972 INFO L225 Difference]: With dead ends: 23410 [2021-11-23 02:06:37,972 INFO L226 Difference]: Without dead ends: 14200 [2021-11-23 02:06:38,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:06:38,018 INFO L933 BasicCegarLoop]: 9229 mSDtfsCounter, 329 mSDsluCounter, 19669 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 123 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 27295 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:06:38,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 27295 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2438 Invalid, 10 Unknown, 0 Unchecked, 39.8s Time] [2021-11-23 02:06:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14200 states. [2021-11-23 02:06:38,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14200 to 13870. [2021-11-23 02:06:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13870 states, 8729 states have (on average 1.3172184671783709) internal successors, (11498), 8948 states have internal predecessors, (11498), 4501 states have call successors, (4501), 641 states have call predecessors, (4501), 639 states have return successors, (4499), 4480 states have call predecessors, (4499), 4499 states have call successors, (4499) [2021-11-23 02:06:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13870 states to 13870 states and 20498 transitions. [2021-11-23 02:06:38,973 INFO L78 Accepts]: Start accepts. Automaton has 13870 states and 20498 transitions. Word has length 732 [2021-11-23 02:06:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:06:38,973 INFO L470 AbstractCegarLoop]: Abstraction has 13870 states and 20498 transitions. [2021-11-23 02:06:38,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-11-23 02:06:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 13870 states and 20498 transitions. [2021-11-23 02:06:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2021-11-23 02:06:39,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:39,022 INFO L514 BasicCegarLoop]: trace histogram [19, 14, 14, 12, 9, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:06:39,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 02:06:39,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:06:39,222 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:06:39,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:39,223 INFO L85 PathProgramCache]: Analyzing trace with hash 430445790, now seen corresponding path program 1 times [2021-11-23 02:06:39,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:39,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195129851] [2021-11-23 02:06:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:39,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:39,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:06:39,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930380431] [2021-11-23 02:06:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:39,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:06:39,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:06:39,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:06:39,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:06:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:43,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 18780 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:06:44,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:06:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2021-11-23 02:06:45,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:06:45,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:45,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195129851] [2021-11-23 02:06:45,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:06:45,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930380431] [2021-11-23 02:06:45,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930380431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:45,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:06:45,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:06:45,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444120304] [2021-11-23 02:06:45,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:45,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:06:45,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:45,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:06:45,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:06:45,210 INFO L87 Difference]: Start difference. First operand 13870 states and 20498 transitions. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2021-11-23 02:06:47,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:54,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:56,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:06:58,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:00,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:03,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:08,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:10,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:11,053 INFO L93 Difference]: Finished difference Result 27819 states and 41201 transitions. [2021-11-23 02:07:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:07:11,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) Word has length 739 [2021-11-23 02:07:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:11,147 INFO L225 Difference]: With dead ends: 27819 [2021-11-23 02:07:11,148 INFO L226 Difference]: Without dead ends: 13963 [2021-11-23 02:07:11,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:07:11,214 INFO L933 BasicCegarLoop]: 9018 mSDtfsCounter, 26 mSDsluCounter, 9785 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18001 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:11,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 18001 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1607 Invalid, 6 Unknown, 0 Unchecked, 25.4s Time] [2021-11-23 02:07:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13963 states. [2021-11-23 02:07:12,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13963 to 13870. [2021-11-23 02:07:12,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13870 states, 8729 states have (on average 1.3168747851987628) internal successors, (11495), 8948 states have internal predecessors, (11495), 4501 states have call successors, (4501), 641 states have call predecessors, (4501), 639 states have return successors, (4499), 4480 states have call predecessors, (4499), 4499 states have call successors, (4499) [2021-11-23 02:07:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13870 states to 13870 states and 20495 transitions. [2021-11-23 02:07:12,239 INFO L78 Accepts]: Start accepts. Automaton has 13870 states and 20495 transitions. Word has length 739 [2021-11-23 02:07:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:12,239 INFO L470 AbstractCegarLoop]: Abstraction has 13870 states and 20495 transitions. [2021-11-23 02:07:12,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 2 states have call successors, (123), 2 states have call predecessors, (123), 2 states have return successors, (122), 2 states have call predecessors, (122), 2 states have call successors, (122) [2021-11-23 02:07:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 13870 states and 20495 transitions. [2021-11-23 02:07:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2021-11-23 02:07:12,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:12,287 INFO L514 BasicCegarLoop]: trace histogram [19, 14, 14, 14, 10, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:07:12,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-23 02:07:12,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:07:12,488 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:07:12,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:12,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1259815798, now seen corresponding path program 1 times [2021-11-23 02:07:12,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:12,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573123757] [2021-11-23 02:07:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:12,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:13,310 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:07:13,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121339328] [2021-11-23 02:07:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:13,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:07:13,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:07:13,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:07:13,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:07:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:17,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 18816 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:07:17,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:07:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2021-11-23 02:07:18,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:07:18,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:18,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573123757] [2021-11-23 02:07:18,496 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:07:18,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121339328] [2021-11-23 02:07:18,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121339328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:18,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:18,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:07:18,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791950647] [2021-11-23 02:07:18,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:18,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:07:18,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:07:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:07:18,500 INFO L87 Difference]: Start difference. First operand 13870 states and 20495 transitions. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2021-11-23 02:07:21,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:30,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:32,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:34,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:38,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:43,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:45,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:48,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:50,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:07:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:07:51,247 INFO L93 Difference]: Finished difference Result 28230 states and 41838 transitions. [2021-11-23 02:07:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:07:51,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) Word has length 761 [2021-11-23 02:07:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:07:51,319 INFO L225 Difference]: With dead ends: 28230 [2021-11-23 02:07:51,319 INFO L226 Difference]: Without dead ends: 14374 [2021-11-23 02:07:51,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:07:51,380 INFO L933 BasicCegarLoop]: 9124 mSDtfsCounter, 301 mSDsluCounter, 19585 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 70 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 27111 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:07:51,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 27111 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2413 Invalid, 8 Unknown, 0 Unchecked, 32.2s Time] [2021-11-23 02:07:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14374 states. [2021-11-23 02:07:52,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14374 to 13874. [2021-11-23 02:07:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13874 states, 8733 states have (on average 1.3167296461697011) internal successors, (11499), 8952 states have internal predecessors, (11499), 4501 states have call successors, (4501), 641 states have call predecessors, (4501), 639 states have return successors, (4499), 4480 states have call predecessors, (4499), 4499 states have call successors, (4499) [2021-11-23 02:07:52,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13874 states to 13874 states and 20499 transitions. [2021-11-23 02:07:52,498 INFO L78 Accepts]: Start accepts. Automaton has 13874 states and 20499 transitions. Word has length 761 [2021-11-23 02:07:52,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:07:52,499 INFO L470 AbstractCegarLoop]: Abstraction has 13874 states and 20499 transitions. [2021-11-23 02:07:52,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 2 states have call successors, (112), 2 states have call predecessors, (112), 2 states have return successors, (111), 2 states have call predecessors, (111), 2 states have call successors, (111) [2021-11-23 02:07:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 13874 states and 20499 transitions. [2021-11-23 02:07:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2021-11-23 02:07:52,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:07:52,566 INFO L514 BasicCegarLoop]: trace histogram [21, 14, 14, 14, 11, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:07:52,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:07:52,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 02:07:52,766 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:07:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:07:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1827114922, now seen corresponding path program 1 times [2021-11-23 02:07:52,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:07:52,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633746050] [2021-11-23 02:07:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:52,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:07:53,375 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:07:53,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093443364] [2021-11-23 02:07:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:07:53,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:07:53,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:07:53,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:07:53,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 02:07:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:07:57,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 19088 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:07:57,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:07:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 781 trivial. 0 not checked. [2021-11-23 02:07:59,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:07:59,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:07:59,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633746050] [2021-11-23 02:07:59,031 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:07:59,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093443364] [2021-11-23 02:07:59,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093443364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:07:59,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:07:59,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:07:59,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916219944] [2021-11-23 02:07:59,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:07:59,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:07:59,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:07:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:07:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:07:59,034 INFO L87 Difference]: Start difference. First operand 13874 states and 20499 transitions. Second operand has 8 states, 7 states have (on average 52.0) internal successors, (364), 6 states have internal predecessors, (364), 3 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (119), 5 states have call predecessors, (119), 3 states have call successors, (119) [2021-11-23 02:08:01,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:04,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:05,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:08,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:23,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:25,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:28,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:35,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:50,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:53,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:53,743 INFO L93 Difference]: Finished difference Result 28260 states and 41899 transitions. [2021-11-23 02:08:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:08:53,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 52.0) internal successors, (364), 6 states have internal predecessors, (364), 3 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (119), 5 states have call predecessors, (119), 3 states have call successors, (119) Word has length 799 [2021-11-23 02:08:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:53,825 INFO L225 Difference]: With dead ends: 28260 [2021-11-23 02:08:53,825 INFO L226 Difference]: Without dead ends: 14400 [2021-11-23 02:08:53,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:08:53,982 INFO L933 BasicCegarLoop]: 9358 mSDtfsCounter, 199 mSDsluCounter, 60712 mSDsCounter, 0 mSdLazyCounter, 5709 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 65207 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5709 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:53,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 65207 Invalid, 5718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 5709 Invalid, 7 Unknown, 0 Unchecked, 54.1s Time] [2021-11-23 02:08:54,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14400 states. [2021-11-23 02:08:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14400 to 13890. [2021-11-23 02:08:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13890 states, 8743 states have (on average 1.31636737961798) internal successors, (11509), 8962 states have internal predecessors, (11509), 4503 states have call successors, (4503), 641 states have call predecessors, (4503), 643 states have return successors, (4526), 4486 states have call predecessors, (4526), 4501 states have call successors, (4526) [2021-11-23 02:08:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13890 states to 13890 states and 20538 transitions. [2021-11-23 02:08:54,794 INFO L78 Accepts]: Start accepts. Automaton has 13890 states and 20538 transitions. Word has length 799 [2021-11-23 02:08:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:54,795 INFO L470 AbstractCegarLoop]: Abstraction has 13890 states and 20538 transitions. [2021-11-23 02:08:54,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 52.0) internal successors, (364), 6 states have internal predecessors, (364), 3 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (119), 5 states have call predecessors, (119), 3 states have call successors, (119) [2021-11-23 02:08:54,795 INFO L276 IsEmpty]: Start isEmpty. Operand 13890 states and 20538 transitions. [2021-11-23 02:08:54,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2021-11-23 02:08:54,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:54,841 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 11, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:54,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-23 02:08:55,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:08:55,046 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:08:55,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:55,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1037443907, now seen corresponding path program 1 times [2021-11-23 02:08:55,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:08:55,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388750735] [2021-11-23 02:08:55,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:55,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:08:55,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:08:55,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222238506] [2021-11-23 02:08:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:55,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:08:55,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:55,514 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:08:55,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 02:08:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:59,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 19086 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:08:59,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:00,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-11-23 02:09:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1277 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2021-11-23 02:09:01,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:09:01,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:01,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388750735] [2021-11-23 02:09:01,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:09:01,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222238506] [2021-11-23 02:09:01,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222238506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:01,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:01,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:09:01,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66408070] [2021-11-23 02:09:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:01,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:09:01,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:01,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:09:01,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:09:01,351 INFO L87 Difference]: Start difference. First operand 13890 states and 20538 transitions. Second operand has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 3 states have call successors, (131), 3 states have call predecessors, (131), 3 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2021-11-23 02:09:04,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:21,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:24,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:26,077 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:28,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:30,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:32,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:34,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:36,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:38,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:40,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:42,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:44,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:47,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:49,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:51,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:52,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:54,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:56,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:59,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:01,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:03,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:05,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:07,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:14,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:18,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:31,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:34,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:37,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:38,545 INFO L93 Difference]: Finished difference Result 27871 states and 41307 transitions. [2021-11-23 02:10:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:10:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 3 states have call successors, (131), 3 states have call predecessors, (131), 3 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) Word has length 804 [2021-11-23 02:10:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:38,612 INFO L225 Difference]: With dead ends: 27871 [2021-11-23 02:10:38,612 INFO L226 Difference]: Without dead ends: 13995 [2021-11-23 02:10:38,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 796 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:10:38,684 INFO L933 BasicCegarLoop]: 8973 mSDtfsCounter, 28 mSDsluCounter, 34502 mSDsCounter, 0 mSdLazyCounter, 5544 mSolverCounterSat, 1 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 41433 SdHoareTripleChecker+Invalid, 7514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5544 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 1942 IncrementalHoareTripleChecker+Unchecked, 96.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:38,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 41433 Invalid, 7514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5544 Invalid, 27 Unknown, 1942 Unchecked, 96.5s Time] [2021-11-23 02:10:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13995 states. [2021-11-23 02:10:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13995 to 13926. [2021-11-23 02:10:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13926 states, 8770 states have (on average 1.3167616875712658) internal successors, (11548), 8989 states have internal predecessors, (11548), 4509 states have call successors, (4509), 644 states have call predecessors, (4509), 646 states have return successors, (4532), 4492 states have call predecessors, (4532), 4507 states have call successors, (4532) [2021-11-23 02:10:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13926 states to 13926 states and 20589 transitions. [2021-11-23 02:10:39,522 INFO L78 Accepts]: Start accepts. Automaton has 13926 states and 20589 transitions. Word has length 804 [2021-11-23 02:10:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:39,523 INFO L470 AbstractCegarLoop]: Abstraction has 13926 states and 20589 transitions. [2021-11-23 02:10:39,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.5) internal successors, (399), 6 states have internal predecessors, (399), 3 states have call successors, (131), 3 states have call predecessors, (131), 3 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2021-11-23 02:10:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 13926 states and 20589 transitions. [2021-11-23 02:10:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2021-11-23 02:10:39,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:39,570 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 11, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:39,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-23 02:10:39,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:10:39,770 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:10:39,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2043051281, now seen corresponding path program 1 times [2021-11-23 02:10:39,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:39,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680753741] [2021-11-23 02:10:39,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:39,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:40,357 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:10:40,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [620107129] [2021-11-23 02:10:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:40,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:10:40,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:10:40,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:10:40,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 02:10:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:44,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 19092 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:10:44,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:45,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-11-23 02:10:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2021-11-23 02:10:46,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:10:46,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:46,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680753741] [2021-11-23 02:10:46,951 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:10:46,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620107129] [2021-11-23 02:10:46,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620107129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:46,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:46,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:10:46,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084794884] [2021-11-23 02:10:46,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:46,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:10:46,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:10:46,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:10:46,955 INFO L87 Difference]: Start difference. First operand 13926 states and 20589 transitions. Second operand has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 3 states have call successors, (131), 3 states have call predecessors, (131), 3 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2021-11-23 02:10:50,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:57,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:05,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:11,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:13,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:15,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:17,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:19,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:21,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:23,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:25,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:27,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:29,983 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:31,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:33,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:35,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:37,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:39,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:42,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:44,742 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:46,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:49,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:51,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:53,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:55,897 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:58,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:00,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:10,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:24,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:25,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:27,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:30,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:33,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:36,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:36,977 INFO L93 Difference]: Finished difference Result 27907 states and 41355 transitions. [2021-11-23 02:12:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:12:36,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 3 states have call successors, (131), 3 states have call predecessors, (131), 3 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) Word has length 806 [2021-11-23 02:12:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:37,048 INFO L225 Difference]: With dead ends: 27907 [2021-11-23 02:12:37,048 INFO L226 Difference]: Without dead ends: 13995 [2021-11-23 02:12:37,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 798 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:12:37,188 INFO L933 BasicCegarLoop]: 8975 mSDtfsCounter, 27 mSDsluCounter, 34500 mSDsCounter, 0 mSdLazyCounter, 5545 mSolverCounterSat, 1 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41433 SdHoareTripleChecker+Invalid, 7514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5545 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 1941 IncrementalHoareTripleChecker+Unchecked, 109.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:37,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 41433 Invalid, 7514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5545 Invalid, 27 Unknown, 1941 Unchecked, 109.3s Time] [2021-11-23 02:12:37,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13995 states. [2021-11-23 02:12:37,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13995 to 13929. [2021-11-23 02:12:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13929 states, 8773 states have (on average 1.3166533682890686) internal successors, (11551), 8992 states have internal predecessors, (11551), 4509 states have call successors, (4509), 644 states have call predecessors, (4509), 646 states have return successors, (4532), 4492 states have call predecessors, (4532), 4507 states have call successors, (4532) [2021-11-23 02:12:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13929 states to 13929 states and 20592 transitions. [2021-11-23 02:12:37,918 INFO L78 Accepts]: Start accepts. Automaton has 13929 states and 20592 transitions. Word has length 806 [2021-11-23 02:12:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:37,918 INFO L470 AbstractCegarLoop]: Abstraction has 13929 states and 20592 transitions. [2021-11-23 02:12:37,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.83333333333333) internal successors, (401), 6 states have internal predecessors, (401), 3 states have call successors, (131), 3 states have call predecessors, (131), 3 states have return successors, (130), 3 states have call predecessors, (130), 3 states have call successors, (130) [2021-11-23 02:12:37,919 INFO L276 IsEmpty]: Start isEmpty. Operand 13929 states and 20592 transitions. [2021-11-23 02:12:37,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2021-11-23 02:12:37,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:37,969 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 11, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:38,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cca7d79d-97cf-44be-b6d3-36a1b00bf4d9/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0