./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX --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 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:39:01,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:39:01,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:39:01,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:39:01,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:39:01,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:39:01,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:39:01,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:39:01,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:39:01,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:39:01,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:39:01,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:39:01,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:39:01,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:39:01,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:39:01,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:39:01,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:39:01,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:39:01,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:39:01,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:39:01,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:39:01,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:39:01,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:39:01,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:39:01,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:39:01,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:39:01,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:39:01,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:39:01,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:39:01,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:39:01,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:39:01,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:39:01,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:39:01,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:39:01,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:39:01,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:39:01,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:39:01,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:39:01,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:39:01,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:39:01,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:39:01,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 09:39:01,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:39:01,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:39:01,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:39:01,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:39:01,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:39:01,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:39:01,695 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:39:01,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:39:01,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:39:01,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:39:01,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:39:01,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:39:01,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:39:01,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:39:01,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:39:01,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:39:01,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:39:01,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:39:01,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:39:01,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:39:01,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:39:01,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:39:01,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:39:01,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:39:01,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:39:01,702 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:39:01,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:39:01,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:39:01,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:39:01,704 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_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2021-11-09 09:39:02,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:39:02,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:39:02,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:39:02,049 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:39:02,050 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:39:02,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-09 09:39:02,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/data/e81ea3673/1464c91cd0b14371be1783c000d4729d/FLAG1726f677e [2021-11-09 09:39:03,473 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:39:03,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-09 09:39:03,524 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/data/e81ea3673/1464c91cd0b14371be1783c000d4729d/FLAG1726f677e [2021-11-09 09:39:03,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/data/e81ea3673/1464c91cd0b14371be1783c000d4729d [2021-11-09 09:39:03,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:39:03,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:39:03,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:39:03,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:39:03,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:39:03,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:39:03" (1/1) ... [2021-11-09 09:39:03,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40631883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:03, skipping insertion in model container [2021-11-09 09:39:03,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:39:03" (1/1) ... [2021-11-09 09:39:03,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:39:03,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:39:07,510 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_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-09 09:39:07,514 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_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-09 09:39:07,515 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_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-09 09:39:07,516 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_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-09 09:39:07,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:39:07,631 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:39:08,043 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_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-09 09:39:08,043 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_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-09 09:39:08,044 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_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-09 09:39:08,045 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_1cba07f0-207e-4382-93f7-2fa7b913662d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-09 09:39:08,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:39:08,381 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:39:08,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08 WrapperNode [2021-11-09 09:39:08,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:39:08,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:39:08,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:39:08,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:39:08,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:08,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:09,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:39:09,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:39:09,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:39:09,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:39:09,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:09,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:09,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:09,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:09,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:10,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:10,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:10,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:39:10,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:39:10,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:39:10,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:39:10,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (1/1) ... [2021-11-09 09:39:10,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:39:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:39:10,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:39:10,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cba07f0-207e-4382-93f7-2fa7b913662d/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:39:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:39:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-09 09:39:10,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-09 09:39:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:39:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:39:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:39:10,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:39:10,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:39:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-09 09:39:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-09 09:39:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:39:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:39:10,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:39:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:39:10,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:39:23,140 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-09 09:39:23,140 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-09 09:39:23,141 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-09 09:39:23,141 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-09 09:39:23,143 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-09 09:39:23,143 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-09 09:39:23,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:39:23,182 INFO L299 CfgBuilder]: Removed 3826 assume(true) statements. [2021-11-09 09:39:23,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:39:23 BoogieIcfgContainer [2021-11-09 09:39:23,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:39:23,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:39:23,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:39:23,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:39:23,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:39:03" (1/3) ... [2021-11-09 09:39:23,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72821d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:39:23, skipping insertion in model container [2021-11-09 09:39:23,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:39:08" (2/3) ... [2021-11-09 09:39:23,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72821d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:39:23, skipping insertion in model container [2021-11-09 09:39:23,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:39:23" (3/3) ... [2021-11-09 09:39:23,200 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-09 09:39:23,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:39:23,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-11-09 09:39:23,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:39:23,297 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 [2021-11-09 09:39:23,298 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-11-09 09:39:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 3689 states, 3628 states have (on average 1.3321389195148843) internal successors, (4833), 3688 states have internal predecessors, (4833), 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) [2021-11-09 09:39:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-09 09:39:23,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:23,440 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] [2021-11-09 09:39:23,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:39:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -967687657, now seen corresponding path program 1 times [2021-11-09 09:39:23,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:23,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582176799] [2021-11-09 09:39:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:23,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:24,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:24,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582176799] [2021-11-09 09:39:24,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582176799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:24,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:24,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:24,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312997778] [2021-11-09 09:39:24,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:24,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:24,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:24,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:24,420 INFO L87 Difference]: Start difference. First operand has 3689 states, 3628 states have (on average 1.3321389195148843) internal successors, (4833), 3688 states have internal predecessors, (4833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-09 09:39:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:26,717 INFO L93 Difference]: Finished difference Result 10272 states and 13449 transitions. [2021-11-09 09:39:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:26,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-09 09:39:26,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:26,800 INFO L225 Difference]: With dead ends: 10272 [2021-11-09 09:39:26,800 INFO L226 Difference]: Without dead ends: 6399 [2021-11-09 09:39:26,817 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 [2021-11-09 09:39:26,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-11-09 09:39:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5969. [2021-11-09 09:39:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5969 states, 5908 states have (on average 1.2808056872037914) internal successors, (7567), 5968 states have internal predecessors, (7567), 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) [2021-11-09 09:39:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 7567 transitions. [2021-11-09 09:39:27,201 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 7567 transitions. Word has length 43 [2021-11-09 09:39:27,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:27,202 INFO L470 AbstractCegarLoop]: Abstraction has 5969 states and 7567 transitions. [2021-11-09 09:39:27,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-09 09:39:27,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 7567 transitions. [2021-11-09 09:39:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-09 09:39:27,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:27,207 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] [2021-11-09 09:39:27,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:39:27,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:39:27,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:27,209 INFO L85 PathProgramCache]: Analyzing trace with hash -113139560, now seen corresponding path program 1 times [2021-11-09 09:39:27,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:27,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436388653] [2021-11-09 09:39:27,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:27,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:27,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:27,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436388653] [2021-11-09 09:39:27,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436388653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:27,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:27,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:27,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056884848] [2021-11-09 09:39:27,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:27,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:27,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:27,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:27,450 INFO L87 Difference]: Start difference. First operand 5969 states and 7567 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-09 09:39:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:29,005 INFO L93 Difference]: Finished difference Result 17513 states and 22286 transitions. [2021-11-09 09:39:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:29,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-11-09 09:39:29,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:29,095 INFO L225 Difference]: With dead ends: 17513 [2021-11-09 09:39:29,095 INFO L226 Difference]: Without dead ends: 11620 [2021-11-09 09:39:29,114 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 [2021-11-09 09:39:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-11-09 09:39:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11576. [2021-11-09 09:39:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11576 states, 11515 states have (on average 1.2825010855405992) internal successors, (14768), 11575 states have internal predecessors, (14768), 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) [2021-11-09 09:39:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11576 states to 11576 states and 14768 transitions. [2021-11-09 09:39:29,860 INFO L78 Accepts]: Start accepts. Automaton has 11576 states and 14768 transitions. Word has length 45 [2021-11-09 09:39:29,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:29,862 INFO L470 AbstractCegarLoop]: Abstraction has 11576 states and 14768 transitions. [2021-11-09 09:39:29,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-11-09 09:39:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 11576 states and 14768 transitions. [2021-11-09 09:39:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-09 09:39:29,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:29,872 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] [2021-11-09 09:39:29,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:39:29,878 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:39:29,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1292504363, now seen corresponding path program 1 times [2021-11-09 09:39:29,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:29,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383166177] [2021-11-09 09:39:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:29,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:30,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:30,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383166177] [2021-11-09 09:39:30,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383166177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:30,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:30,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:30,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154387826] [2021-11-09 09:39:30,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:30,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:30,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:30,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:30,180 INFO L87 Difference]: Start difference. First operand 11576 states and 14768 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-09 09:39:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:31,740 INFO L93 Difference]: Finished difference Result 32556 states and 41586 transitions. [2021-11-09 09:39:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:31,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2021-11-09 09:39:31,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:31,880 INFO L225 Difference]: With dead ends: 32556 [2021-11-09 09:39:31,880 INFO L226 Difference]: Without dead ends: 21056 [2021-11-09 09:39:31,911 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 [2021-11-09 09:39:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21056 states. [2021-11-09 09:39:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21056 to 20518. [2021-11-09 09:39:32,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20518 states, 20457 states have (on average 1.2861123331866842) internal successors, (26310), 20517 states have internal predecessors, (26310), 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) [2021-11-09 09:39:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20518 states to 20518 states and 26310 transitions. [2021-11-09 09:39:32,919 INFO L78 Accepts]: Start accepts. Automaton has 20518 states and 26310 transitions. Word has length 46 [2021-11-09 09:39:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:32,921 INFO L470 AbstractCegarLoop]: Abstraction has 20518 states and 26310 transitions. [2021-11-09 09:39:32,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2021-11-09 09:39:32,922 INFO L276 IsEmpty]: Start isEmpty. Operand 20518 states and 26310 transitions. [2021-11-09 09:39:32,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 09:39:32,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:32,925 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] [2021-11-09 09:39:32,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:39:32,925 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:39:32,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1026351272, now seen corresponding path program 1 times [2021-11-09 09:39:32,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:32,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189207737] [2021-11-09 09:39:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:32,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:33,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:33,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189207737] [2021-11-09 09:39:33,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189207737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:33,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:33,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:33,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135023810] [2021-11-09 09:39:33,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:33,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:33,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:33,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:33,178 INFO L87 Difference]: Start difference. First operand 20518 states and 26310 transitions. 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) [2021-11-09 09:39:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:34,783 INFO L93 Difference]: Finished difference Result 35921 states and 46039 transitions. [2021-11-09 09:39:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:34,785 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 [2021-11-09 09:39:34,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:34,836 INFO L225 Difference]: With dead ends: 35921 [2021-11-09 09:39:34,836 INFO L226 Difference]: Without dead ends: 15479 [2021-11-09 09:39:34,874 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 [2021-11-09 09:39:34,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15479 states. [2021-11-09 09:39:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15479 to 15361. [2021-11-09 09:39:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15361 states, 15300 states have (on average 1.2822875816993464) internal successors, (19619), 15360 states have internal predecessors, (19619), 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) [2021-11-09 09:39:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15361 states to 15361 states and 19619 transitions. [2021-11-09 09:39:35,549 INFO L78 Accepts]: Start accepts. Automaton has 15361 states and 19619 transitions. Word has length 48 [2021-11-09 09:39:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:35,549 INFO L470 AbstractCegarLoop]: Abstraction has 15361 states and 19619 transitions. [2021-11-09 09:39:35,550 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) [2021-11-09 09:39:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 15361 states and 19619 transitions. [2021-11-09 09:39:35,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:39:35,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:35,552 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, 1] [2021-11-09 09:39:35,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:39:35,552 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:39:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash 950652540, now seen corresponding path program 1 times [2021-11-09 09:39:35,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:35,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735526972] [2021-11-09 09:39:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:35,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:35,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:35,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:35,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735526972] [2021-11-09 09:39:35,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735526972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:35,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:35,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:35,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116653507] [2021-11-09 09:39:35,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:35,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:35,782 INFO L87 Difference]: Start difference. First operand 15361 states and 19619 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-09 09:39:37,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:37,575 INFO L93 Difference]: Finished difference Result 40436 states and 51756 transitions. [2021-11-09 09:39:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-09 09:39:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:37,661 INFO L225 Difference]: With dead ends: 40436 [2021-11-09 09:39:37,661 INFO L226 Difference]: Without dead ends: 25151 [2021-11-09 09:39:37,693 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 [2021-11-09 09:39:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25151 states. [2021-11-09 09:39:38,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25151 to 24707. [2021-11-09 09:39:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24707 states, 24646 states have (on average 1.2857664529741135) internal successors, (31689), 24706 states have internal predecessors, (31689), 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) [2021-11-09 09:39:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24707 states to 24707 states and 31689 transitions. [2021-11-09 09:39:38,502 INFO L78 Accepts]: Start accepts. Automaton has 24707 states and 31689 transitions. Word has length 49 [2021-11-09 09:39:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:38,503 INFO L470 AbstractCegarLoop]: Abstraction has 24707 states and 31689 transitions. [2021-11-09 09:39:38,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-09 09:39:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 24707 states and 31689 transitions. [2021-11-09 09:39:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 09:39:38,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:38,505 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:39:38,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:39:38,505 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr57ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:39:38,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:38,506 INFO L85 PathProgramCache]: Analyzing trace with hash -960392490, now seen corresponding path program 1 times [2021-11-09 09:39:38,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:38,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671187990] [2021-11-09 09:39:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:38,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:38,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:38,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671187990] [2021-11-09 09:39:38,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671187990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:38,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:38,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:38,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865578228] [2021-11-09 09:39:38,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:38,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:38,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:38,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:38,687 INFO L87 Difference]: Start difference. First operand 24707 states and 31689 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-09 09:39:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:41,108 INFO L93 Difference]: Finished difference Result 72950 states and 93628 transitions. [2021-11-09 09:39:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:41,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-09 09:39:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:41,257 INFO L225 Difference]: With dead ends: 72950 [2021-11-09 09:39:41,257 INFO L226 Difference]: Without dead ends: 48319 [2021-11-09 09:39:41,318 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 [2021-11-09 09:39:41,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48319 states. [2021-11-09 09:39:42,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48319 to 48009. [2021-11-09 09:39:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48009 states, 47948 states have (on average 1.2865604404771835) internal successors, (61688), 48008 states have internal predecessors, (61688), 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) [2021-11-09 09:39:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48009 states to 48009 states and 61688 transitions. [2021-11-09 09:39:42,785 INFO L78 Accepts]: Start accepts. Automaton has 48009 states and 61688 transitions. Word has length 61 [2021-11-09 09:39:42,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:42,785 INFO L470 AbstractCegarLoop]: Abstraction has 48009 states and 61688 transitions. [2021-11-09 09:39:42,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-09 09:39:42,786 INFO L276 IsEmpty]: Start isEmpty. Operand 48009 states and 61688 transitions. [2021-11-09 09:39:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-09 09:39:42,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:42,788 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:39:42,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:39:42,791 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:39:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1943570088, now seen corresponding path program 1 times [2021-11-09 09:39:42,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:42,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709889129] [2021-11-09 09:39:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:42,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:42,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:42,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709889129] [2021-11-09 09:39:42,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709889129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:42,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:42,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:42,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309045475] [2021-11-09 09:39:42,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:42,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:42,985 INFO L87 Difference]: Start difference. First operand 48009 states and 61688 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) 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) [2021-11-09 09:39:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:46,848 INFO L93 Difference]: Finished difference Result 142595 states and 183443 transitions. [2021-11-09 09:39:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:46,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) 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 74 [2021-11-09 09:39:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:47,102 INFO L225 Difference]: With dead ends: 142595 [2021-11-09 09:39:47,104 INFO L226 Difference]: Without dead ends: 94713 [2021-11-09 09:39:47,206 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 [2021-11-09 09:39:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94713 states. [2021-11-09 09:39:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94713 to 94669. [2021-11-09 09:39:50,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94669 states, 94608 states have (on average 1.2865296803652968) internal successors, (121716), 94668 states have internal predecessors, (121716), 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) [2021-11-09 09:39:50,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94669 states to 94669 states and 121716 transitions. [2021-11-09 09:39:50,329 INFO L78 Accepts]: Start accepts. Automaton has 94669 states and 121716 transitions. Word has length 74 [2021-11-09 09:39:50,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:39:50,330 INFO L470 AbstractCegarLoop]: Abstraction has 94669 states and 121716 transitions. [2021-11-09 09:39:50,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) 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) [2021-11-09 09:39:50,330 INFO L276 IsEmpty]: Start isEmpty. Operand 94669 states and 121716 transitions. [2021-11-09 09:39:50,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-09 09:39:50,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:39:50,332 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:39:50,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:39:50,333 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:39:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:39:50,334 INFO L85 PathProgramCache]: Analyzing trace with hash 663706410, now seen corresponding path program 1 times [2021-11-09 09:39:50,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:39:50,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533895657] [2021-11-09 09:39:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:39:50,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:39:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:39:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:39:50,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:39:50,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533895657] [2021-11-09 09:39:50,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533895657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:39:50,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:39:50,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:39:50,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414506361] [2021-11-09 09:39:50,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:39:50,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:39:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:39:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:39:50,508 INFO L87 Difference]: Start difference. First operand 94669 states and 121716 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) 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) [2021-11-09 09:39:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:39:55,399 INFO L93 Difference]: Finished difference Result 235947 states and 303563 transitions. [2021-11-09 09:39:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:39:55,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) 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 74 [2021-11-09 09:39:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:39:55,785 INFO L225 Difference]: With dead ends: 235947 [2021-11-09 09:39:55,785 INFO L226 Difference]: Without dead ends: 141405 [2021-11-09 09:39:55,984 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 [2021-11-09 09:39:56,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141405 states. [2021-11-09 09:40:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141405 to 141144. [2021-11-09 09:40:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141144 states, 141083 states have (on average 1.286894948363729) internal successors, (181559), 141143 states have internal predecessors, (181559), 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) [2021-11-09 09:40:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141144 states to 141144 states and 181559 transitions. [2021-11-09 09:40:00,652 INFO L78 Accepts]: Start accepts. Automaton has 141144 states and 181559 transitions. Word has length 74 [2021-11-09 09:40:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:00,652 INFO L470 AbstractCegarLoop]: Abstraction has 141144 states and 181559 transitions. [2021-11-09 09:40:00,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) 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) [2021-11-09 09:40:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 141144 states and 181559 transitions. [2021-11-09 09:40:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:40:00,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:00,655 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:40:00,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:40:00,656 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:40:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash 820923817, now seen corresponding path program 1 times [2021-11-09 09:40:00,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:00,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291861224] [2021-11-09 09:40:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:00,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 09:40:01,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:01,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291861224] [2021-11-09 09:40:01,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291861224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:40:01,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:40:01,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:40:01,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257358457] [2021-11-09 09:40:01,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:40:01,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:01,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:40:01,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:40:01,416 INFO L87 Difference]: Start difference. First operand 141144 states and 181559 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-09 09:40:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:05,771 INFO L93 Difference]: Finished difference Result 141144 states and 181559 transitions. [2021-11-09 09:40:05,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:40:05,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 [2021-11-09 09:40:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:06,049 INFO L225 Difference]: With dead ends: 141144 [2021-11-09 09:40:06,049 INFO L226 Difference]: Without dead ends: 141138 [2021-11-09 09:40:06,080 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 [2021-11-09 09:40:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141138 states. [2021-11-09 09:40:10,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141138 to 141138. [2021-11-09 09:40:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141138 states, 141080 states have (on average 1.2868797845194215) internal successors, (181553), 141137 states have internal predecessors, (181553), 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) [2021-11-09 09:40:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141138 states to 141138 states and 181553 transitions. [2021-11-09 09:40:10,984 INFO L78 Accepts]: Start accepts. Automaton has 141138 states and 181553 transitions. Word has length 75 [2021-11-09 09:40:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:40:10,985 INFO L470 AbstractCegarLoop]: Abstraction has 141138 states and 181553 transitions. [2021-11-09 09:40:10,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-11-09 09:40:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 141138 states and 181553 transitions. [2021-11-09 09:40:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:40:10,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:40:10,987 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:40:10,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:40:10,987 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 58 more)] === [2021-11-09 09:40:10,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:40:10,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1366046868, now seen corresponding path program 1 times [2021-11-09 09:40:10,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:40:10,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474044631] [2021-11-09 09:40:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:40:10,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:40:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:40:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 09:40:11,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:40:11,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474044631] [2021-11-09 09:40:11,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474044631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:40:11,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:40:11,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:40:11,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704390736] [2021-11-09 09:40:11,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:40:11,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:40:11,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:40:11,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:40:11,226 INFO L87 Difference]: Start difference. First operand 141138 states and 181553 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) [2021-11-09 09:40:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:40:15,701 INFO L93 Difference]: Finished difference Result 141138 states and 181553 transitions. [2021-11-09 09:40:15,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:40:15,701 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 77 [2021-11-09 09:40:15,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:40:15,979 INFO L225 Difference]: With dead ends: 141138 [2021-11-09 09:40:15,979 INFO L226 Difference]: Without dead ends: 141132 [2021-11-09 09:40:16,012 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 [2021-11-09 09:40:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141132 states.