./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/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_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:59:44,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:59:44,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:59:44,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:59:44,263 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:59:44,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:59:44,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:59:44,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:59:44,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:59:44,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:59:44,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:59:44,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:59:44,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:59:44,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:59:44,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:59:44,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:59:44,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:59:44,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:59:44,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:59:44,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:59:44,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:59:44,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:59:44,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:59:44,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:59:44,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:59:44,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:59:44,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:59:44,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:59:44,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:59:44,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:59:44,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:59:44,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:59:44,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:59:44,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:59:44,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:59:44,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:59:44,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:59:44,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:59:44,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:59:44,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:59:44,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:59:44,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:59:44,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:59:44,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:59:44,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:59:44,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:59:44,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:59:44,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:59:44,377 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:59:44,377 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:59:44,377 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:59:44,377 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:59:44,378 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:59:44,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:59:44,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:59:44,378 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:59:44,378 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:59:44,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:59:44,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:59:44,379 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:59:44,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:59:44,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:59:44,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:59:44,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:59:44,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:59:44,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:59:44,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:59:44,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:59:44,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:59:44,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:59:44,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:59:44,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:59:44,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:59:44,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:59:44,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:59:44,383 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:59:44,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:59:44,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:59:44,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:59:44,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:59:44,386 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_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80ccff96bb4644269e1ce6d8eb8d6f93859589318842a9f290454700795f0f83 [2021-11-25 18:59:44,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:59:44,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:59:44,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:59:44,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:59:44,681 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:59:44,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 18:59:44,741 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/data/28301d614/36b6269037ab4cc69dbf0df140a57073/FLAG2b3cb39ee [2021-11-25 18:59:46,073 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:59:46,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 18:59:46,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/data/28301d614/36b6269037ab4cc69dbf0df140a57073/FLAG2b3cb39ee [2021-11-25 18:59:46,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/data/28301d614/36b6269037ab4cc69dbf0df140a57073 [2021-11-25 18:59:46,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:59:46,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:59:46,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:59:46,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:59:46,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:59:46,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0f18b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:46, skipping insertion in model container [2021-11-25 18:59:46,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:59:46" (1/1) ... [2021-11-25 18:59:46,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:59:46,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:59:56,052 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_4a06b962-d52e-40d3-aa1f-dd05713dd596/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[896432,896445] [2021-11-25 18:59:56,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:59:56,247 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:59:57,437 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_4a06b962-d52e-40d3-aa1f-dd05713dd596/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[896432,896445] [2021-11-25 18:59:57,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:59:58,091 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:59:58,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58 WrapperNode [2021-11-25 18:59:58,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:59:58,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:59:58,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:59:58,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:59:58,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 18:59:58,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 18:59:59,243 INFO L137 Inliner]: procedures = 697, calls = 16145, calls flagged for inlining = 386, calls inlined = 339, statements flattened = 29246 [2021-11-25 18:59:59,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:59:59,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:59:59,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:59:59,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:59:59,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 18:59:59,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 18:59:59,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 18:59:59,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 19:00:00,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 19:00:00,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 19:00:00,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 19:00:00,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:00:00,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:00:00,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:00:00,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:00:00,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (1/1) ... [2021-11-25 19:00:00,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:00,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:00,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:00:00,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:00:00,996 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 19:00:01,011 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 19:00:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-25 19:00:01,012 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-25 19:00:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 19:00:01,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 19:00:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-25 19:00:01,013 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-25 19:00:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-25 19:00:01,013 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-25 19:00:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-25 19:00:01,014 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-25 19:00:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-25 19:00:01,014 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-25 19:00:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:00:01,014 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:00:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-25 19:00:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-25 19:00:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 19:00:01,015 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 19:00:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 19:00:01,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 19:00:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-25 19:00:01,016 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-25 19:00:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-25 19:00:01,017 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-25 19:00:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:00:01,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:00:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-25 19:00:01,017 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-25 19:00:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-25 19:00:01,018 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-25 19:00:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-25 19:00:01,018 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-25 19:00:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:00:01,018 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:00:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-25 19:00:01,019 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-25 19:00:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 19:00:01,019 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 19:00:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-25 19:00:01,020 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-25 19:00:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 19:00:01,020 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 19:00:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-25 19:00:01,020 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-25 19:00:01,020 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:00:01,021 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:00:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 19:00:01,021 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 19:00:01,021 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-25 19:00:01,021 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-25 19:00:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-25 19:00:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-25 19:00:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 19:00:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 19:00:01,022 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-25 19:00:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-25 19:00:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-25 19:00:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-25 19:00:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:00:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:00:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-25 19:00:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-25 19:00:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-25 19:00:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-25 19:00:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-25 19:00:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-25 19:00:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-25 19:00:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-25 19:00:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:00:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:00:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:00:01,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:00:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:00:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:00:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 19:00:01,026 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 19:00:01,026 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:00:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:00:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:00:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:00:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:00:01,027 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:00:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 19:00:01,031 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 19:00:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:00:01,031 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 19:00:01,031 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 19:00:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-25 19:00:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-25 19:00:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-25 19:00:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-25 19:00:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-25 19:00:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-25 19:00:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-25 19:00:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-25 19:00:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 19:00:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 19:00:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-25 19:00:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-25 19:00:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:00:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:00:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-25 19:00:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-25 19:00:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-25 19:00:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-25 19:00:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-25 19:00:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-25 19:00:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:00:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:00:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 19:00:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 19:00:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-25 19:00:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-25 19:00:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-25 19:00:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-25 19:00:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:00:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 19:00:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 19:00:01,045 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-25 19:00:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-25 19:00:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-25 19:00:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-25 19:00:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-25 19:00:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-25 19:00:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:00:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:00:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-25 19:00:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-25 19:00:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:00:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:00:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:00:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-25 19:00:01,048 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-25 19:00:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:00:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:00:01,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:00:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-25 19:00:01,049 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-25 19:00:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-25 19:00:01,049 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-25 19:00:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-25 19:00:01,049 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-25 19:00:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:00:01,050 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:00:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-25 19:00:01,050 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-25 19:00:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-25 19:00:01,050 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-25 19:00:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 19:00:01,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 19:00:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-25 19:00:01,051 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-25 19:00:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 19:00:01,051 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 19:00:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:00:01,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:00:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-25 19:00:01,052 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-25 19:00:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:00:01,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:00:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-25 19:00:01,052 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-25 19:00:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-25 19:00:01,053 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-25 19:00:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 19:00:01,053 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 19:00:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:00:01,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:00:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-25 19:00:01,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-25 19:00:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-25 19:00:01,054 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-25 19:00:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-25 19:00:01,054 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-25 19:00:01,054 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-25 19:00:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-25 19:00:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-25 19:00:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-25 19:00:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:00:01,055 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-25 19:00:01,055 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-25 19:00:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-25 19:00:01,056 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-25 19:00:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:00:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 19:00:01,056 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 19:00:01,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:00:01,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:00:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:00:01,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:00:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:00:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-25 19:00:01,057 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-25 19:00:01,057 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:00:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-25 19:00:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-25 19:00:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:00:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:00:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-25 19:00:01,058 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-25 19:00:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-25 19:00:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-25 19:00:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-25 19:00:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-25 19:00:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-25 19:00:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-25 19:00:01,060 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:00:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:00:01,060 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-25 19:00:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-25 19:00:01,060 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-25 19:00:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-25 19:00:01,061 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-25 19:00:01,061 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-25 19:00:01,061 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 19:00:01,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 19:00:01,061 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 19:00:01,061 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 19:00:01,062 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:00:01,062 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:00:01,062 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-25 19:00:01,062 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-25 19:00:01,062 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 19:00:01,062 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 19:00:01,063 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-25 19:00:01,063 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-25 19:00:01,063 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-25 19:00:01,063 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-25 19:00:01,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 19:00:01,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 19:00:01,064 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-25 19:00:01,064 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-25 19:00:01,064 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-25 19:00:01,064 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-25 19:00:01,064 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-25 19:00:01,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-25 19:00:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 19:00:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 19:00:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-25 19:00:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-25 19:00:01,065 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 19:00:01,065 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 19:00:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-25 19:00:01,066 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-25 19:00:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 19:00:01,066 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 19:00:01,066 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 19:00:01,066 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 19:00:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-25 19:00:01,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-25 19:00:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-25 19:00:01,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-25 19:00:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-25 19:00:01,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-25 19:00:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-25 19:00:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-25 19:00:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:00:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:00:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-25 19:00:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-25 19:00:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 19:00:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 19:00:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-25 19:00:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-25 19:00:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-25 19:00:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-25 19:00:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-25 19:00:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-25 19:00:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 19:00:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 19:00:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-25 19:00:01,070 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-25 19:00:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:00:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:00:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:00:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:00:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 19:00:01,071 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 19:00:01,071 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 19:00:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 19:00:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 19:00:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 19:00:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-25 19:00:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-25 19:00:01,072 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 19:00:01,072 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 19:00:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 19:00:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 19:00:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 19:00:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 19:00:01,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 19:00:01,073 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-25 19:00:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-25 19:00:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 19:00:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 19:00:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 19:00:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 19:00:01,074 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-25 19:00:01,074 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-25 19:00:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 19:00:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 19:00:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:00:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:00:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-25 19:00:01,075 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-25 19:00:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-25 19:00:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-25 19:00:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-25 19:00:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-25 19:00:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-25 19:00:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-25 19:00:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:00:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:00:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-25 19:00:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-25 19:00:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-25 19:00:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-25 19:00:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-25 19:00:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-25 19:00:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 19:00:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 19:00:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-25 19:00:01,078 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-25 19:00:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-25 19:00:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-25 19:00:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-25 19:00:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-25 19:00:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:00:01,079 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:00:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 19:00:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 19:00:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 19:00:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 19:00:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:00:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:00:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:00:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 19:00:01,081 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 19:00:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 19:00:01,081 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 19:00:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-25 19:00:01,081 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-25 19:00:01,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:00:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 19:00:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 19:00:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 19:00:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 19:00:01,082 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-25 19:00:01,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-25 19:00:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-25 19:00:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-25 19:00:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-25 19:00:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-25 19:00:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-25 19:00:01,083 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-25 19:00:01,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:00:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-25 19:00:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-25 19:00:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-25 19:00:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-25 19:00:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-25 19:00:01,084 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-25 19:00:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 19:00:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 19:00:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-25 19:00:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-25 19:00:01,085 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 19:00:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 19:00:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-25 19:00:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-25 19:00:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:00:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:00:01,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 19:00:01,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 19:00:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:00:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:00:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:00:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:00:01,087 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-25 19:00:01,087 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-25 19:00:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 19:00:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 19:00:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-25 19:00:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-25 19:00:01,088 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-25 19:00:01,088 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-25 19:00:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-25 19:00:01,089 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-25 19:00:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-25 19:00:01,089 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-25 19:00:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-25 19:00:01,089 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-25 19:00:01,089 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-25 19:00:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-25 19:00:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-25 19:00:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-25 19:00:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-25 19:00:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-25 19:00:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 19:00:01,091 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 19:00:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:00:01,091 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:00:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 19:00:01,091 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 19:00:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-25 19:00:01,092 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-25 19:00:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-25 19:00:01,092 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-25 19:00:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-25 19:00:01,092 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-25 19:00:01,092 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-25 19:00:01,092 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-25 19:00:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-25 19:00:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-25 19:00:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-25 19:00:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-25 19:00:01,093 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 19:00:01,093 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 19:00:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-25 19:00:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-25 19:00:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 19:00:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 19:00:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-25 19:00:01,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-25 19:00:01,094 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:00:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:00:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-25 19:00:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-25 19:00:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-25 19:00:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-25 19:00:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:00:01,095 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-25 19:00:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-25 19:00:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:00:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:00:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-25 19:00:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-25 19:00:01,096 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-25 19:00:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-25 19:00:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-25 19:00:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-25 19:00:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:00:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:00:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-25 19:00:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-25 19:00:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 19:00:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 19:00:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-25 19:00:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-25 19:00:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-25 19:00:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-25 19:00:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 19:00:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 19:00:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-25 19:00:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-25 19:00:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-25 19:00:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-25 19:00:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-25 19:00:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-25 19:00:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-25 19:00:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-25 19:00:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 19:00:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 19:00:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_10 [2021-11-25 19:00:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_10 [2021-11-25 19:00:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-25 19:00:01,101 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-25 19:00:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-25 19:00:01,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-25 19:00:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-25 19:00:01,101 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-25 19:00:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:00:01,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:00:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 19:00:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 19:00:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 19:00:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 19:00:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 19:00:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 19:00:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-25 19:00:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-25 19:00:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-25 19:00:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-25 19:00:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 19:00:01,103 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 19:00:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-25 19:00:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-25 19:00:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 19:00:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 19:00:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-25 19:00:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-25 19:00:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:00:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:00:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 19:00:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:00:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-25 19:00:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-25 19:00:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-25 19:00:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-25 19:00:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:00:01,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:00:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 19:00:03,728 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:00:03,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:00:05,168 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:01:07,351 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:01:15,009 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:01:15,010 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-25 19:01:15,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:01:15 BoogieIcfgContainer [2021-11-25 19:01:15,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:01:15,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:01:15,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:01:15,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:01:15,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:59:46" (1/3) ... [2021-11-25 19:01:15,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f73944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:01:15, skipping insertion in model container [2021-11-25 19:01:15,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:58" (2/3) ... [2021-11-25 19:01:15,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f73944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:01:15, skipping insertion in model container [2021-11-25 19:01:15,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:01:15" (3/3) ... [2021-11-25 19:01:15,036 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 19:01:15,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:01:15,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:01:15,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:01:15,149 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 [2021-11-25 19:01:15,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:01:15,309 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) [2021-11-25 19:01:15,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:01:15,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:15,317 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] [2021-11-25 19:01:15,317 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:01:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1101434559, now seen corresponding path program 1 times [2021-11-25 19:01:15,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:15,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812116779] [2021-11-25 19:01:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:15,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:01:16,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:16,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812116779] [2021-11-25 19:01:16,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812116779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:16,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:16,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:01:16,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734420182] [2021-11-25 19:01:16,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:16,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:01:16,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:01:16,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:01:16,928 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) [2021-11-25 19:01:19,953 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 [] [2021-11-25 19:01:29,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:31,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:34,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:39,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:46,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:49,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:01:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:01:50,453 INFO L93 Difference]: Finished difference Result 17283 states and 25948 transitions. [2021-11-25 19:01:50,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:01:50,455 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 [2021-11-25 19:01:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:01:50,599 INFO L225 Difference]: With dead ends: 17283 [2021-11-25 19:01:50,600 INFO L226 Difference]: Without dead ends: 10716 [2021-11-25 19:01:50,672 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 [2021-11-25 19:01:50,676 INFO L933 BasicCegarLoop]: 10777 mSDtfsCounter, 6287 mSDsluCounter, 21380 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6291 SdHoareTripleChecker+Valid, 30518 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:01:50,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6291 Valid, 30518 Invalid, 2489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2482 Invalid, 6 Unknown, 0 Unchecked, 32.7s Time] [2021-11-25 19:01:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2021-11-25 19:01:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10710. [2021-11-25 19:01:51,991 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, (3477), 3460 states have call predecessors, (3477), 3475 states have call successors, (3477) [2021-11-25 19:01:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10710 states to 10710 states and 15995 transitions. [2021-11-25 19:01:52,111 INFO L78 Accepts]: Start accepts. Automaton has 10710 states and 15995 transitions. Word has length 34 [2021-11-25 19:01:52,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:01:52,112 INFO L470 AbstractCegarLoop]: Abstraction has 10710 states and 15995 transitions. [2021-11-25 19:01:52,113 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) [2021-11-25 19:01:52,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10710 states and 15995 transitions. [2021-11-25 19:01:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-25 19:01:52,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:01:52,155 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] [2021-11-25 19:01:52,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:01:52,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:01:52,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:01:52,158 INFO L85 PathProgramCache]: Analyzing trace with hash 219520837, now seen corresponding path program 1 times [2021-11-25 19:01:52,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:01:52,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526121985] [2021-11-25 19:01:52,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:01:52,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:01:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:01:54,205 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-25 19:01:54,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:01:54,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526121985] [2021-11-25 19:01:54,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526121985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:01:54,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:01:54,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:01:54,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846383845] [2021-11-25 19:01:54,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:01:54,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:01:54,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:01:54,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:01:54,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:01:54,212 INFO L87 Difference]: Start difference. First operand 10710 states and 15995 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) [2021-11-25 19:01:57,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:05,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:07,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:09,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:17,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:21,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:25,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:30,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:33,004 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 [] [2021-11-25 19:02:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:02:33,286 INFO L93 Difference]: Finished difference Result 15369 states and 22925 transitions. [2021-11-25 19:02:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:02:33,287 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 [2021-11-25 19:02:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:02:33,416 INFO L225 Difference]: With dead ends: 15369 [2021-11-25 19:02:33,416 INFO L226 Difference]: Without dead ends: 15337 [2021-11-25 19:02:33,433 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 [2021-11-25 19:02:33,434 INFO L933 BasicCegarLoop]: 10609 mSDtfsCounter, 6856 mSDsluCounter, 21169 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6858 SdHoareTripleChecker+Valid, 30170 SdHoareTripleChecker+Invalid, 2429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:02:33,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6858 Valid, 30170 Invalid, 2429 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2421 Invalid, 8 Unknown, 0 Unchecked, 38.6s Time] [2021-11-25 19:02:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15337 states. [2021-11-25 19:02:34,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15337 to 15302. [2021-11-25 19:02:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15302 states, 9743 states have (on average 1.3287488453248486) internal successors, (12946), 9961 states have internal predecessors, (12946), 4942 states have call successors, (4942), 617 states have call predecessors, (4942), 616 states have return successors, (4944), 4922 states have call predecessors, (4944), 4940 states have call successors, (4944) [2021-11-25 19:02:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15302 states to 15302 states and 22832 transitions. [2021-11-25 19:02:34,887 INFO L78 Accepts]: Start accepts. Automaton has 15302 states and 22832 transitions. Word has length 241 [2021-11-25 19:02:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:02:34,889 INFO L470 AbstractCegarLoop]: Abstraction has 15302 states and 22832 transitions. [2021-11-25 19:02:34,889 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) [2021-11-25 19:02:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 15302 states and 22832 transitions. [2021-11-25 19:02:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2021-11-25 19:02:35,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:02:35,027 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 8, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:02:35,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:02:35,028 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:02:35,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:02:35,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1893971375, now seen corresponding path program 1 times [2021-11-25 19:02:35,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:02:35,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532953851] [2021-11-25 19:02:35,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:35,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:02:35,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:02:35,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804930924] [2021-11-25 19:02:35,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:02:35,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:02:35,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:02:35,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:02:35,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:02:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:02:41,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 21991 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:02:41,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:02:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-11-25 19:02:42,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:02:42,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:02:42,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532953851] [2021-11-25 19:02:42,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:02:42,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804930924] [2021-11-25 19:02:42,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804930924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:02:42,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:02:42,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:02:42,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54026900] [2021-11-25 19:02:42,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:02:42,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:02:42,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:02:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:02:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:02:42,643 INFO L87 Difference]: Start difference. First operand 15302 states and 22832 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2021-11-25 19:02:45,431 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 [] [2021-11-25 19:02:49,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:51,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:53,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:02:56,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:00,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:06,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:08,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:11,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:11,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:11,844 INFO L93 Difference]: Finished difference Result 23137 states and 34709 transitions. [2021-11-25 19:03:11,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:11,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 599 [2021-11-25 19:03:11,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:11,967 INFO L225 Difference]: With dead ends: 23137 [2021-11-25 19:03:11,967 INFO L226 Difference]: Without dead ends: 16631 [2021-11-25 19:03:12,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:12,042 INFO L933 BasicCegarLoop]: 10179 mSDtfsCounter, 1132 mSDsluCounter, 10026 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 19407 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:12,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1618 Valid, 19407 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1729 Invalid, 7 Unknown, 0 Unchecked, 28.7s Time] [2021-11-25 19:03:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16631 states. [2021-11-25 19:03:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16631 to 15307. [2021-11-25 19:03:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15307 states, 9747 states have (on average 1.3287165281625115) internal successors, (12951), 9965 states have internal predecessors, (12951), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 19:03:13,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15307 states to 15307 states and 22839 transitions. [2021-11-25 19:03:13,485 INFO L78 Accepts]: Start accepts. Automaton has 15307 states and 22839 transitions. Word has length 599 [2021-11-25 19:03:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:13,488 INFO L470 AbstractCegarLoop]: Abstraction has 15307 states and 22839 transitions. [2021-11-25 19:03:13,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2021-11-25 19:03:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 15307 states and 22839 transitions. [2021-11-25 19:03:13,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2021-11-25 19:03:13,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:13,614 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 8, 6, 5, 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, 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] [2021-11-25 19:03:13,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:03:13,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:03:13,828 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:03:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:13,829 INFO L85 PathProgramCache]: Analyzing trace with hash -987409873, now seen corresponding path program 1 times [2021-11-25 19:03:13,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:13,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741604892] [2021-11-25 19:03:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:13,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:14,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:03:14,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385650296] [2021-11-25 19:03:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:14,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:03:14,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:03:14,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:03:14,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:03:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:20,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 22461 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:03:20,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:03:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-25 19:03:22,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:03:22,161 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:22,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741604892] [2021-11-25 19:03:22,161 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:03:22,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385650296] [2021-11-25 19:03:22,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385650296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:22,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:22,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:03:22,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620825877] [2021-11-25 19:03:22,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:22,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:03:22,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:22,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:03:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:03:22,165 INFO L87 Difference]: Start difference. First operand 15307 states and 22839 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2021-11-25 19:03:25,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:33,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:36,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:39,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:41,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:45,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:51,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:53,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:54,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:55,901 INFO L93 Difference]: Finished difference Result 27224 states and 40732 transitions. [2021-11-25 19:03:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:03:55,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 643 [2021-11-25 19:03:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:56,001 INFO L225 Difference]: With dead ends: 27224 [2021-11-25 19:03:56,002 INFO L226 Difference]: Without dead ends: 16121 [2021-11-25 19:03:56,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:03:56,089 INFO L933 BasicCegarLoop]: 9420 mSDtfsCounter, 451 mSDsluCounter, 19882 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 113 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 27680 SdHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:56,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 27680 Invalid, 2630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [113 Valid, 2511 Invalid, 6 Unknown, 0 Unchecked, 33.1s Time] [2021-11-25 19:03:56,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16121 states. [2021-11-25 19:03:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16121 to 15311. [2021-11-25 19:03:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15311 states, 9751 states have (on average 1.3285816839298534) internal successors, (12955), 9969 states have internal predecessors, (12955), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 19:03:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15311 states to 15311 states and 22843 transitions. [2021-11-25 19:03:57,595 INFO L78 Accepts]: Start accepts. Automaton has 15311 states and 22843 transitions. Word has length 643 [2021-11-25 19:03:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:57,602 INFO L470 AbstractCegarLoop]: Abstraction has 15311 states and 22843 transitions. [2021-11-25 19:03:57,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2021-11-25 19:03:57,603 INFO L276 IsEmpty]: Start isEmpty. Operand 15311 states and 22843 transitions. [2021-11-25 19:03:57,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2021-11-25 19:03:57,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:57,814 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 8, 6, 5, 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, 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] [2021-11-25 19:03:57,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:03:58,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:03:58,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:03:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:58,029 INFO L85 PathProgramCache]: Analyzing trace with hash -121361059, now seen corresponding path program 1 times [2021-11-25 19:03:58,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:58,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205858962] [2021-11-25 19:03:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:58,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:59,601 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:59,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205858962] [2021-11-25 19:03:59,602 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 19:03:59,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001090737] [2021-11-25 19:03:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:59,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:03:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:03:59,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:03:59,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:04:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:05,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 22724 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:04:05,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2021-11-25 19:04:07,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:04:07,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001090737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:07,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:07,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:04:07,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166923032] [2021-11-25 19:04:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:07,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:04:07,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:07,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:04:07,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:04:07,619 INFO L87 Difference]: Start difference. First operand 15311 states and 22843 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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) [2021-11-25 19:04:10,723 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 [] [2021-11-25 19:04:20,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:21,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:23,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:25,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:27,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:32,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:39,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:41,339 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:44,087 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 [] [2021-11-25 19:04:44,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:44,535 INFO L93 Difference]: Finished difference Result 26752 states and 39990 transitions. [2021-11-25 19:04:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:04:44,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 661 [2021-11-25 19:04:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:44,633 INFO L225 Difference]: With dead ends: 26752 [2021-11-25 19:04:44,634 INFO L226 Difference]: Without dead ends: 15645 [2021-11-25 19:04:44,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:04:44,705 INFO L933 BasicCegarLoop]: 9224 mSDtfsCounter, 329 mSDsluCounter, 19665 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 123 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 27291 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:44,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 27291 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2432 Invalid, 9 Unknown, 0 Unchecked, 36.4s Time] [2021-11-25 19:04:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15645 states. [2021-11-25 19:04:46,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15645 to 15315. [2021-11-25 19:04:46,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15315 states, 9755 states have (on average 1.3284469502819067) internal successors, (12959), 9973 states have internal predecessors, (12959), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 19:04:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15315 states to 15315 states and 22847 transitions. [2021-11-25 19:04:46,177 INFO L78 Accepts]: Start accepts. Automaton has 15315 states and 22847 transitions. Word has length 661 [2021-11-25 19:04:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:46,178 INFO L470 AbstractCegarLoop]: Abstraction has 15315 states and 22847 transitions. [2021-11-25 19:04:46,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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) [2021-11-25 19:04:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 15315 states and 22847 transitions. [2021-11-25 19:04:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2021-11-25 19:04:46,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:46,234 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 8, 6, 5, 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, 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] [2021-11-25 19:04:46,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:04:46,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:46,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:46,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1058659792, now seen corresponding path program 1 times [2021-11-25 19:04:46,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:46,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659637729] [2021-11-25 19:04:46,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:46,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:48,098 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:04:48,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498451237] [2021-11-25 19:04:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:48,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:04:48,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:04:48,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:04:48,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:04:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:54,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 22770 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:04:54,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:04:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2021-11-25 19:04:56,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:04:56,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:56,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659637729] [2021-11-25 19:04:56,165 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:04:56,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498451237] [2021-11-25 19:04:56,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498451237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:56,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:56,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:04:56,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585797543] [2021-11-25 19:04:56,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:56,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:04:56,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:04:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:04:56,169 INFO L87 Difference]: Start difference. First operand 15315 states and 22847 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2021-11-25 19:04:59,378 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 [] [2021-11-25 19:05:07,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:09,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:11,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:16,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:22,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:24,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:26,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:28,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:31,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:34,176 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:34,623 INFO L93 Difference]: Finished difference Result 27220 states and 40719 transitions. [2021-11-25 19:05:34,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:05:34,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 664 [2021-11-25 19:05:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:34,691 INFO L225 Difference]: With dead ends: 27220 [2021-11-25 19:05:34,691 INFO L226 Difference]: Without dead ends: 16109 [2021-11-25 19:05:34,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:05:34,740 INFO L933 BasicCegarLoop]: 9420 mSDtfsCounter, 333 mSDsluCounter, 20041 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 109 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 27821 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:34,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 27821 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2532 Invalid, 9 Unknown, 0 Unchecked, 37.9s Time] [2021-11-25 19:05:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16109 states. [2021-11-25 19:05:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16109 to 15319. [2021-11-25 19:05:35,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15319 states, 9759 states have (on average 1.3283123270826929) internal successors, (12963), 9977 states have internal predecessors, (12963), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 19:05:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15319 states to 15319 states and 22851 transitions. [2021-11-25 19:05:35,793 INFO L78 Accepts]: Start accepts. Automaton has 15319 states and 22851 transitions. Word has length 664 [2021-11-25 19:05:35,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:35,794 INFO L470 AbstractCegarLoop]: Abstraction has 15319 states and 22851 transitions. [2021-11-25 19:05:35,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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) [2021-11-25 19:05:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 15319 states and 22851 transitions. [2021-11-25 19:05:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2021-11-25 19:05:35,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:35,870 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 8, 7, 6, 4, 4, 4, 4, 4, 3, 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, 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, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:35,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:05:36,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 19:05:36,096 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1988051823, now seen corresponding path program 1 times [2021-11-25 19:05:36,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:36,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126964029] [2021-11-25 19:05:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:36,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:37,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:05:37,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591576526] [2021-11-25 19:05:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:37,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:05:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:05:37,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:05:37,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:05:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:43,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 22883 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:05:43,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:05:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-11-25 19:05:45,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:05:45,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:45,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126964029] [2021-11-25 19:05:45,493 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:05:45,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591576526] [2021-11-25 19:05:45,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591576526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:45,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:45,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:05:45,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656368264] [2021-11-25 19:05:45,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:45,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:05:45,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:45,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:05:45,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:05:45,496 INFO L87 Difference]: Start difference. First operand 15319 states and 22851 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2021-11-25 19:05:48,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:54,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:58,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:00,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:02,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:04,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:06,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:09,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:16,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:18,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:21,008 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 [] [2021-11-25 19:06:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:21,461 INFO L93 Difference]: Finished difference Result 26768 states and 40006 transitions. [2021-11-25 19:06:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:06:21,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 683 [2021-11-25 19:06:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:21,532 INFO L225 Difference]: With dead ends: 26768 [2021-11-25 19:06:21,532 INFO L226 Difference]: Without dead ends: 15653 [2021-11-25 19:06:21,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:06:21,575 INFO L933 BasicCegarLoop]: 9229 mSDtfsCounter, 329 mSDsluCounter, 19667 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 123 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 27295 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:21,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 27295 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2437 Invalid, 9 Unknown, 0 Unchecked, 35.3s Time] [2021-11-25 19:06:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15653 states. [2021-11-25 19:06:22,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15653 to 15323. [2021-11-25 19:06:22,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15323 states, 9763 states have (on average 1.328177814196456) internal successors, (12967), 9981 states have internal predecessors, (12967), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 19:06:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15323 states to 15323 states and 22855 transitions. [2021-11-25 19:06:22,711 INFO L78 Accepts]: Start accepts. Automaton has 15323 states and 22855 transitions. Word has length 683 [2021-11-25 19:06:22,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:22,714 INFO L470 AbstractCegarLoop]: Abstraction has 15323 states and 22855 transitions. [2021-11-25 19:06:22,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2021-11-25 19:06:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 15323 states and 22855 transitions. [2021-11-25 19:06:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2021-11-25 19:06:22,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:22,790 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 8, 7, 6, 4, 4, 4, 4, 4, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:22,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:06:23,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:06:23,004 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:23,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:23,005 INFO L85 PathProgramCache]: Analyzing trace with hash -585503966, now seen corresponding path program 1 times [2021-11-25 19:06:23,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:23,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883394883] [2021-11-25 19:06:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:23,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:24,327 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:06:24,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975758635] [2021-11-25 19:06:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:24,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:06:24,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:06:24,332 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:06:24,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a06b962-d52e-40d3-aa1f-dd05713dd596/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:06:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:31,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 22949 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:06:31,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:06:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 279 proven. 5 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2021-11-25 19:06:32,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:06:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2021-11-25 19:06:34,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883394883] [2021-11-25 19:06:34,075 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:06:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975758635] [2021-11-25 19:06:34,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975758635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:06:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [658148178] [2021-11-25 19:06:34,131 INFO L159 IcfgInterpreter]: Started Sifa with 486 locations of interest [2021-11-25 19:06:34,132 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:06:34,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:06:34,152 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:06:34,153 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs