./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:48:12,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:48:12,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:48:12,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:48:12,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:48:12,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:48:12,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:48:12,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:48:12,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:48:12,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:48:12,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:48:12,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:48:12,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:48:12,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:48:12,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:48:12,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:48:12,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:48:12,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:48:12,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:48:12,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:48:12,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:48:12,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:48:12,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:48:12,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:48:12,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:48:12,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:48:12,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:48:12,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:48:12,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:48:12,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:48:12,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:48:12,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:48:12,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:48:12,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:48:12,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:48:12,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:48:12,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:48:12,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:48:12,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:48:12,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:48:12,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:48:12,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 07:48:12,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:48:12,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:48:12,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:48:12,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:48:12,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:48:12,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:48:12,597 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:48:12,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:48:12,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:48:12,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:48:12,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:48:12,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:48:12,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:48:12,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:48:12,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:48:12,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:48:12,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:48:12,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:48:12,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:48:12,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:48:12,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:48:12,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:48:12,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:48:12,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:48:12,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:48:12,602 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:48:12,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:48:12,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:48:12,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:48:12,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 [2021-11-07 07:48:12,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:48:12,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:48:12,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:48:12,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:48:12,933 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:48:12,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-07 07:48:13,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/data/ab5c6519e/e0647a8278274bd7b0211e2a3d7b9013/FLAG9c94c96f2 [2021-11-07 07:48:14,204 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:48:14,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-07 07:48:14,302 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/data/ab5c6519e/e0647a8278274bd7b0211e2a3d7b9013/FLAG9c94c96f2 [2021-11-07 07:48:14,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/data/ab5c6519e/e0647a8278274bd7b0211e2a3d7b9013 [2021-11-07 07:48:14,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:48:14,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:48:14,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:48:14,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:48:14,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:48:14,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:48:14" (1/1) ... [2021-11-07 07:48:14,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748420e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:14, skipping insertion in model container [2021-11-07 07:48:14,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:48:14" (1/1) ... [2021-11-07 07:48:14,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:48:14,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:48:18,286 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2021-11-07 07:48:18,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:48:18,399 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:48:19,054 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2021-11-07 07:48:19,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:48:19,388 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:48:19,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19 WrapperNode [2021-11-07 07:48:19,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:48:19,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:48:19,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:48:19,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:48:19,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:19,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:20,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:48:20,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:48:20,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:48:20,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:48:20,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:20,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:21,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:21,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:22,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:22,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:22,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:22,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:48:22,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:48:22,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:48:22,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:48:22,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (1/1) ... [2021-11-07 07:48:22,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:48:22,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:48:22,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:48:23,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d808f0af-0b32-4e63-8ee5-9cd2fcaf314b/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:48:23,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2021-11-07 07:48:23,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2021-11-07 07:48:23,132 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2021-11-07 07:48:23,133 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2021-11-07 07:48:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:48:23,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 07:48:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 07:48:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:48:23,134 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2021-11-07 07:48:23,134 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2021-11-07 07:48:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2021-11-07 07:48:23,135 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2021-11-07 07:48:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:48:23,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-07 07:48:23,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-07 07:48:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:48:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 07:48:23,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 07:48:23,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:48:23,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:48:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 07:48:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 07:48:23,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2021-11-07 07:48:23,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2021-11-07 07:48:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:48:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:48:23,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 07:48:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:48:23,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:48:48,108 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 07:48:48,109 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-07 07:48:48,109 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-07 07:48:48,109 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-07 07:48:48,110 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 07:48:48,110 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-07 07:48:48,111 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 07:48:48,111 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 07:48:48,112 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 07:48:48,112 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 07:48:52,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:48:52,597 INFO L299 CfgBuilder]: Removed 6721 assume(true) statements. [2021-11-07 07:48:52,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:48:52 BoogieIcfgContainer [2021-11-07 07:48:52,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:48:52,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:48:52,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:48:52,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:48:52,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:48:14" (1/3) ... [2021-11-07 07:48:52,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a727a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:48:52, skipping insertion in model container [2021-11-07 07:48:52,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:48:19" (2/3) ... [2021-11-07 07:48:52,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a727a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:48:52, skipping insertion in model container [2021-11-07 07:48:52,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:48:52" (3/3) ... [2021-11-07 07:48:52,618 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-07 07:48:52,625 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:48:52,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-07 07:48:52,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:48:52,727 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=PETRI_NET, 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 [2021-11-07 07:48:52,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-07 07:48:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 5893 states, 5853 states have (on average 1.3135144370408338) internal successors, (7688), 5860 states have internal predecessors, (7688), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-07 07:48:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 07:48:52,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:48:52,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:48:52,866 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:48:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:48:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1130171376, now seen corresponding path program 1 times [2021-11-07 07:48:52,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:48:52,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333942437] [2021-11-07 07:48:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:48:52,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:48:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:48:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:48:53,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:48:53,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333942437] [2021-11-07 07:48:53,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333942437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:48:53,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:48:53,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:48:53,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72391251] [2021-11-07 07:48:53,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:48:53,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:48:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:48:53,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:48:53,964 INFO L87 Difference]: Start difference. First operand has 5893 states, 5853 states have (on average 1.3135144370408338) internal successors, (7688), 5860 states have internal predecessors, (7688), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:48:57,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:48:57,009 INFO L93 Difference]: Finished difference Result 17375 states and 22875 transitions. [2021-11-07 07:48:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:48:57,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 07:48:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:48:57,167 INFO L225 Difference]: With dead ends: 17375 [2021-11-07 07:48:57,168 INFO L226 Difference]: Without dead ends: 11341 [2021-11-07 07:48:57,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:48:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2021-11-07 07:48:58,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11341. [2021-11-07 07:48:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11341 states, 11269 states have (on average 1.2827225130890052) internal successors, (14455), 11276 states have internal predecessors, (14455), 50 states have call successors, (50), 14 states have call predecessors, (50), 14 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-07 07:48:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11341 states to 11341 states and 14555 transitions. [2021-11-07 07:48:58,454 INFO L78 Accepts]: Start accepts. Automaton has 11341 states and 14555 transitions. Word has length 48 [2021-11-07 07:48:58,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:48:58,457 INFO L470 AbstractCegarLoop]: Abstraction has 11341 states and 14555 transitions. [2021-11-07 07:48:58,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:48:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11341 states and 14555 transitions. [2021-11-07 07:48:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 07:48:58,484 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:48:58,484 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 07:48:58,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:48:58,485 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:48:58,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:48:58,487 INFO L85 PathProgramCache]: Analyzing trace with hash 980654295, now seen corresponding path program 1 times [2021-11-07 07:48:58,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:48:58,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142463369] [2021-11-07 07:48:58,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:48:58,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:48:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:48:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:48:59,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:48:59,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142463369] [2021-11-07 07:48:59,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142463369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:48:59,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:48:59,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:48:59,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561628215] [2021-11-07 07:48:59,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:48:59,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:48:59,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:48:59,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:48:59,102 INFO L87 Difference]: Start difference. First operand 11341 states and 14555 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:02,056 INFO L93 Difference]: Finished difference Result 22588 states and 29006 transitions. [2021-11-07 07:49:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 07:49:02,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:02,275 INFO L225 Difference]: With dead ends: 22588 [2021-11-07 07:49:02,275 INFO L226 Difference]: Without dead ends: 16931 [2021-11-07 07:49:02,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:02,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16931 states. [2021-11-07 07:49:03,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16931 to 16931. [2021-11-07 07:49:03,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16931 states, 16827 states have (on average 1.283354133238248) internal successors, (21595), 16834 states have internal predecessors, (21595), 75 states have call successors, (75), 21 states have call predecessors, (75), 21 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-07 07:49:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16931 states to 16931 states and 21745 transitions. [2021-11-07 07:49:03,318 INFO L78 Accepts]: Start accepts. Automaton has 16931 states and 21745 transitions. Word has length 73 [2021-11-07 07:49:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:03,319 INFO L470 AbstractCegarLoop]: Abstraction has 16931 states and 21745 transitions. [2021-11-07 07:49:03,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 16931 states and 21745 transitions. [2021-11-07 07:49:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 07:49:03,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:03,330 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 07:49:03,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:49:03,331 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:49:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:03,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1238819733, now seen corresponding path program 1 times [2021-11-07 07:49:03,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:03,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514862212] [2021-11-07 07:49:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:03,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 07:49:03,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:03,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514862212] [2021-11-07 07:49:03,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514862212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:03,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:03,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:03,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768911837] [2021-11-07 07:49:03,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:03,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:03,910 INFO L87 Difference]: Start difference. First operand 16931 states and 21745 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:04,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:04,756 INFO L93 Difference]: Finished difference Result 16931 states and 21745 transitions. [2021-11-07 07:49:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:49:04,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 07:49:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:04,889 INFO L225 Difference]: With dead ends: 16931 [2021-11-07 07:49:04,889 INFO L226 Difference]: Without dead ends: 16927 [2021-11-07 07:49:04,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16927 states. [2021-11-07 07:49:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16927 to 16927. [2021-11-07 07:49:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16927 states, 16825 states have (on average 1.2832689450222883) internal successors, (21591), 16830 states have internal predecessors, (21591), 75 states have call successors, (75), 21 states have call predecessors, (75), 21 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-11-07 07:49:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16927 states to 16927 states and 21741 transitions. [2021-11-07 07:49:05,829 INFO L78 Accepts]: Start accepts. Automaton has 16927 states and 21741 transitions. Word has length 73 [2021-11-07 07:49:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:05,829 INFO L470 AbstractCegarLoop]: Abstraction has 16927 states and 21741 transitions. [2021-11-07 07:49:05,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 16927 states and 21741 transitions. [2021-11-07 07:49:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 07:49:05,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:05,842 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 07:49:05,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:49:05,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:49:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 800171192, now seen corresponding path program 1 times [2021-11-07 07:49:05,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:05,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749199136] [2021-11-07 07:49:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:05,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 07:49:06,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:06,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749199136] [2021-11-07 07:49:06,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749199136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:06,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:06,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:06,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932716224] [2021-11-07 07:49:06,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:06,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:06,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:06,367 INFO L87 Difference]: Start difference. First operand 16927 states and 21741 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:07,878 INFO L93 Difference]: Finished difference Result 33678 states and 43436 transitions. [2021-11-07 07:49:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:07,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 07:49:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:08,215 INFO L225 Difference]: With dead ends: 33678 [2021-11-07 07:49:08,216 INFO L226 Difference]: Without dead ends: 33674 [2021-11-07 07:49:08,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:08,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33674 states. [2021-11-07 07:49:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33674 to 28687. [2021-11-07 07:49:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28687 states, 28489 states have (on average 1.2855137070448244) internal successors, (36623), 28494 states have internal predecessors, (36623), 150 states have call successors, (150), 42 states have call predecessors, (150), 42 states have return successors, (300), 150 states have call predecessors, (300), 150 states have call successors, (300) [2021-11-07 07:49:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28687 states to 28687 states and 37073 transitions. [2021-11-07 07:49:09,952 INFO L78 Accepts]: Start accepts. Automaton has 28687 states and 37073 transitions. Word has length 75 [2021-11-07 07:49:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:09,954 INFO L470 AbstractCegarLoop]: Abstraction has 28687 states and 37073 transitions. [2021-11-07 07:49:09,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 28687 states and 37073 transitions. [2021-11-07 07:49:09,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:49:09,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:09,965 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 07:49:09,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:49:09,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:49:09,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash 165718619, now seen corresponding path program 1 times [2021-11-07 07:49:09,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:09,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586772907] [2021-11-07 07:49:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:09,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 07:49:10,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:10,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586772907] [2021-11-07 07:49:10,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586772907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:10,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:10,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:10,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060794605] [2021-11-07 07:49:10,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:10,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:10,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:10,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:10,590 INFO L87 Difference]: Start difference. First operand 28687 states and 37073 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:13,134 INFO L93 Difference]: Finished difference Result 57213 states and 74415 transitions. [2021-11-07 07:49:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:13,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-07 07:49:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:13,593 INFO L225 Difference]: With dead ends: 57213 [2021-11-07 07:49:13,593 INFO L226 Difference]: Without dead ends: 57209 [2021-11-07 07:49:13,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57209 states. [2021-11-07 07:49:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57209 to 52199. [2021-11-07 07:49:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52199 states, 51809 states have (on average 1.287054372792372) internal successors, (66681), 51814 states have internal predecessors, (66681), 300 states have call successors, (300), 84 states have call predecessors, (300), 84 states have return successors, (1050), 300 states have call predecessors, (1050), 300 states have call successors, (1050) [2021-11-07 07:49:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52199 states to 52199 states and 68031 transitions. [2021-11-07 07:49:16,843 INFO L78 Accepts]: Start accepts. Automaton has 52199 states and 68031 transitions. Word has length 77 [2021-11-07 07:49:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:16,844 INFO L470 AbstractCegarLoop]: Abstraction has 52199 states and 68031 transitions. [2021-11-07 07:49:16,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 52199 states and 68031 transitions. [2021-11-07 07:49:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 07:49:16,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:16,860 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-07 07:49:16,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:49:16,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:49:16,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash 342152318, now seen corresponding path program 1 times [2021-11-07 07:49:16,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:16,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701189729] [2021-11-07 07:49:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:16,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 07:49:17,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:17,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701189729] [2021-11-07 07:49:17,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701189729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:17,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:17,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:17,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199894691] [2021-11-07 07:49:17,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:49:17,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:17,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:49:17,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:49:17,228 INFO L87 Difference]: Start difference. First operand 52199 states and 68031 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:20,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:20,677 INFO L93 Difference]: Finished difference Result 104285 states and 137288 transitions. [2021-11-07 07:49:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:49:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 07:49:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:21,806 INFO L225 Difference]: With dead ends: 104285 [2021-11-07 07:49:21,808 INFO L226 Difference]: Without dead ends: 104253 [2021-11-07 07:49:21,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:49:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104253 states. [2021-11-07 07:49:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104253 to 104245. [2021-11-07 07:49:25,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104245 states, 103471 states have (on average 1.2872882256864242) internal successors, (133197), 103476 states have internal predecessors, (133197), 600 states have call successors, (600), 168 states have call predecessors, (600), 168 states have return successors, (3450), 600 states have call predecessors, (3450), 600 states have call successors, (3450) [2021-11-07 07:49:27,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104245 states to 104245 states and 137247 transitions. [2021-11-07 07:49:27,418 INFO L78 Accepts]: Start accepts. Automaton has 104245 states and 137247 transitions. Word has length 79 [2021-11-07 07:49:27,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:49:27,418 INFO L470 AbstractCegarLoop]: Abstraction has 104245 states and 137247 transitions. [2021-11-07 07:49:27,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand 104245 states and 137247 transitions. [2021-11-07 07:49:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 07:49:27,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:49:27,566 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 07:49:27,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:49:27,567 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 07:49:27,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:49:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash 327484887, now seen corresponding path program 1 times [2021-11-07 07:49:27,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:49:27,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843178402] [2021-11-07 07:49:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:49:27,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:49:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:49:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 07:49:27,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:49:27,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843178402] [2021-11-07 07:49:27,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843178402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:49:27,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:49:27,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:49:27,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489422259] [2021-11-07 07:49:27,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:49:27,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:49:27,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:49:27,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:27,894 INFO L87 Difference]: Start difference. First operand 104245 states and 137247 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:49:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:49:37,890 INFO L93 Difference]: Finished difference Result 295664 states and 388024 transitions. [2021-11-07 07:49:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:49:37,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 07:49:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:49:39,960 INFO L225 Difference]: With dead ends: 295664 [2021-11-07 07:49:39,960 INFO L226 Difference]: Without dead ends: 191511 [2021-11-07 07:49:41,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:49:41,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191511 states.