./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:33:45,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:33:45,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:33:45,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:33:45,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:33:45,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:33:45,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:33:45,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:33:45,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:33:45,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:33:45,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:33:45,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:33:45,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:33:45,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:33:45,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:33:45,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:33:45,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:33:45,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:33:45,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:33:45,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:33:45,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:33:45,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:33:45,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:33:45,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:33:45,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:33:45,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:33:45,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:33:45,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:33:45,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:33:45,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:33:45,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:33:45,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:33:45,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:33:45,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:33:45,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:33:45,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:33:45,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:33:45,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:33:45,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:33:45,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:33:45,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:33:45,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 07:33:45,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:33:45,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:33:45,380 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:33:45,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:33:45,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:33:45,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:33:45,381 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:33:45,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:33:45,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:33:45,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:33:45,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:33:45,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:33:45,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:33:45,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:33:45,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:33:45,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:33:45,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:33:45,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:33:45,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:33:45,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:33:45,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:33:45,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:33:45,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:33:45,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:33:45,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:33:45,386 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:33:45,386 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:33:45,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:33:45,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:33:45,387 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d612e3d3aaa54cbaaae78896c02f6ca9c3968df93584b0bde88897a60cfa04a [2021-11-07 07:33:45,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:33:45,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:33:45,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:33:45,664 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:33:45,666 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:33:45,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-07 07:33:45,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/data/e21d80da7/eb7163386be14a03a42a147b4ca0c15c/FLAGf0d970fd5 [2021-11-07 07:33:46,754 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:33:46,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-07 07:33:46,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/data/e21d80da7/eb7163386be14a03a42a147b4ca0c15c/FLAGf0d970fd5 [2021-11-07 07:33:47,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/data/e21d80da7/eb7163386be14a03a42a147b4ca0c15c [2021-11-07 07:33:47,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:33:47,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:33:47,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:33:47,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:33:47,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:33:47,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:33:47" (1/1) ... [2021-11-07 07:33:47,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b80ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:47, skipping insertion in model container [2021-11-07 07:33:47,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:33:47" (1/1) ... [2021-11-07 07:33:47,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:33:47,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:33:50,275 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-07 07:33:50,278 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-07 07:33:50,279 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-07 07:33:50,280 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-07 07:33:50,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:33:50,397 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:33:50,715 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319618,319631] [2021-11-07 07:33:50,715 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319787,319800] [2021-11-07 07:33:50,720 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[319954,319967] [2021-11-07 07:33:50,721 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_4f7ad116-3294-49b3-9924-0b6b527dc6f5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i[320122,320135] [2021-11-07 07:33:50,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:33:51,012 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:33:51,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51 WrapperNode [2021-11-07 07:33:51,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:33:51,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:33:51,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:33:51,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:33:51,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:51,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:51,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:33:51,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:33:51,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:33:51,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:33:51,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:51,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:51,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:51,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:52,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:52,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:52,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:52,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:33:52,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:33:52,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:33:52,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:33:52,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (1/1) ... [2021-11-07 07:33:52,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:33:52,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:52,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:33:52,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f7ad116-3294-49b3-9924-0b6b527dc6f5/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:33:52,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:33:52,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 07:33:52,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 07:33:52,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 07:33:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:33:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:33:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:33:52,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:33:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 07:33:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 07:33:52,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:33:52,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:33:52,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 07:33:52,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 07:33:52,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:34:03,324 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 07:34:03,324 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 07:34:03,325 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 07:34:03,325 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 07:34:03,326 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 07:34:03,327 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 07:34:03,373 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:34:03,373 INFO L299 CfgBuilder]: Removed 3826 assume(true) statements. [2021-11-07 07:34:03,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:34:03 BoogieIcfgContainer [2021-11-07 07:34:03,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:34:03,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:34:03,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:34:03,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:34:03,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:33:47" (1/3) ... [2021-11-07 07:34:03,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0374e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:34:03, skipping insertion in model container [2021-11-07 07:34:03,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:51" (2/3) ... [2021-11-07 07:34:03,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0374e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:34:03, skipping insertion in model container [2021-11-07 07:34:03,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:34:03" (3/3) ... [2021-11-07 07:34:03,391 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-fealnx.cil.i [2021-11-07 07:34:03,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:34:03,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-11-07 07:34:03,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:34:03,485 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:34:03,486 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-11-07 07:34:03,566 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) [2021-11-07 07:34:03,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 07:34:03,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:03,580 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] [2021-11-07 07:34:03,581 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)] === [2021-11-07 07:34:03,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:03,586 INFO L85 PathProgramCache]: Analyzing trace with hash -967687657, now seen corresponding path program 1 times [2021-11-07 07:34:03,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:03,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556187734] [2021-11-07 07:34:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:03,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:04,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:04,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556187734] [2021-11-07 07:34:04,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556187734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:04,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:04,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:04,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345225766] [2021-11-07 07:34:04,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:34:04,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:34:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:04,291 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) [2021-11-07 07:34:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:05,979 INFO L93 Difference]: Finished difference Result 10272 states and 13449 transitions. [2021-11-07 07:34:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:34:05,981 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 [2021-11-07 07:34:05,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:06,042 INFO L225 Difference]: With dead ends: 10272 [2021-11-07 07:34:06,042 INFO L226 Difference]: Without dead ends: 6399 [2021-11-07 07:34:06,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:06,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2021-11-07 07:34:06,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 5969. [2021-11-07 07:34:06,334 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) [2021-11-07 07:34:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 7567 transitions. [2021-11-07 07:34:06,363 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 7567 transitions. Word has length 43 [2021-11-07 07:34:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:06,364 INFO L470 AbstractCegarLoop]: Abstraction has 5969 states and 7567 transitions. [2021-11-07 07:34:06,364 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) [2021-11-07 07:34:06,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 7567 transitions. [2021-11-07 07:34:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 07:34:06,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:06,373 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] [2021-11-07 07:34:06,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:34:06,374 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)] === [2021-11-07 07:34:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash -113139560, now seen corresponding path program 1 times [2021-11-07 07:34:06,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:06,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954018920] [2021-11-07 07:34:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:06,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:06,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:06,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954018920] [2021-11-07 07:34:06,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954018920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:06,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:06,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:06,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958767922] [2021-11-07 07:34:06,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:34:06,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:34:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:06,600 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) [2021-11-07 07:34:07,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:07,870 INFO L93 Difference]: Finished difference Result 17513 states and 22286 transitions. [2021-11-07 07:34:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:34:07,872 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 [2021-11-07 07:34:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:07,937 INFO L225 Difference]: With dead ends: 17513 [2021-11-07 07:34:07,938 INFO L226 Difference]: Without dead ends: 11620 [2021-11-07 07:34:07,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-11-07 07:34:08,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 11576. [2021-11-07 07:34:08,367 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) [2021-11-07 07:34:08,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11576 states to 11576 states and 14768 transitions. [2021-11-07 07:34:08,416 INFO L78 Accepts]: Start accepts. Automaton has 11576 states and 14768 transitions. Word has length 45 [2021-11-07 07:34:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:08,416 INFO L470 AbstractCegarLoop]: Abstraction has 11576 states and 14768 transitions. [2021-11-07 07:34:08,416 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) [2021-11-07 07:34:08,417 INFO L276 IsEmpty]: Start isEmpty. Operand 11576 states and 14768 transitions. [2021-11-07 07:34:08,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 07:34:08,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:08,419 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] [2021-11-07 07:34:08,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:34:08,419 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)] === [2021-11-07 07:34:08,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1292504363, now seen corresponding path program 1 times [2021-11-07 07:34:08,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:08,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262953189] [2021-11-07 07:34:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:08,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:08,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:08,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262953189] [2021-11-07 07:34:08,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262953189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:08,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:08,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:08,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425735776] [2021-11-07 07:34:08,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:34:08,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:08,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:34:08,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:08,576 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) [2021-11-07 07:34:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:09,926 INFO L93 Difference]: Finished difference Result 32556 states and 41586 transitions. [2021-11-07 07:34:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:34:09,926 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 [2021-11-07 07:34:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:10,040 INFO L225 Difference]: With dead ends: 32556 [2021-11-07 07:34:10,040 INFO L226 Difference]: Without dead ends: 21056 [2021-11-07 07:34:10,064 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21056 states. [2021-11-07 07:34:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21056 to 20518. [2021-11-07 07:34:10,859 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) [2021-11-07 07:34:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20518 states to 20518 states and 26310 transitions. [2021-11-07 07:34:10,919 INFO L78 Accepts]: Start accepts. Automaton has 20518 states and 26310 transitions. Word has length 46 [2021-11-07 07:34:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:10,919 INFO L470 AbstractCegarLoop]: Abstraction has 20518 states and 26310 transitions. [2021-11-07 07:34:10,920 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) [2021-11-07 07:34:10,920 INFO L276 IsEmpty]: Start isEmpty. Operand 20518 states and 26310 transitions. [2021-11-07 07:34:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 07:34:10,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:10,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:34:10,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:34:10,922 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)] === [2021-11-07 07:34:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:10,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1026351272, now seen corresponding path program 1 times [2021-11-07 07:34:10,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:10,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849909285] [2021-11-07 07:34:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:10,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:11,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:11,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849909285] [2021-11-07 07:34:11,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849909285] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:11,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:11,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:11,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817004615] [2021-11-07 07:34:11,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:34:11,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:34:11,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:11,128 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) [2021-11-07 07:34:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:12,572 INFO L93 Difference]: Finished difference Result 35921 states and 46039 transitions. [2021-11-07 07:34:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:34:12,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 07:34:12,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:12,616 INFO L225 Difference]: With dead ends: 35921 [2021-11-07 07:34:12,616 INFO L226 Difference]: Without dead ends: 15479 [2021-11-07 07:34:12,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15479 states. [2021-11-07 07:34:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15479 to 15361. [2021-11-07 07:34:13,269 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) [2021-11-07 07:34:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15361 states to 15361 states and 19619 transitions. [2021-11-07 07:34:13,303 INFO L78 Accepts]: Start accepts. Automaton has 15361 states and 19619 transitions. Word has length 48 [2021-11-07 07:34:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:13,303 INFO L470 AbstractCegarLoop]: Abstraction has 15361 states and 19619 transitions. [2021-11-07 07:34:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 15361 states and 19619 transitions. [2021-11-07 07:34:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 07:34:13,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:13,305 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] [2021-11-07 07:34:13,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:34:13,306 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)] === [2021-11-07 07:34:13,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash 950652540, now seen corresponding path program 1 times [2021-11-07 07:34:13,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:13,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673113129] [2021-11-07 07:34:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:13,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:13,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:13,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673113129] [2021-11-07 07:34:13,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673113129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:13,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:13,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:13,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049626284] [2021-11-07 07:34:13,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:34:13,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:34:13,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:13,436 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) [2021-11-07 07:34:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:14,506 INFO L93 Difference]: Finished difference Result 40436 states and 51756 transitions. [2021-11-07 07:34:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:34:14,507 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 [2021-11-07 07:34:14,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:14,580 INFO L225 Difference]: With dead ends: 40436 [2021-11-07 07:34:14,581 INFO L226 Difference]: Without dead ends: 25151 [2021-11-07 07:34:14,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:14,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25151 states. [2021-11-07 07:34:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25151 to 24707. [2021-11-07 07:34:15,538 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) [2021-11-07 07:34:15,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24707 states to 24707 states and 31689 transitions. [2021-11-07 07:34:15,603 INFO L78 Accepts]: Start accepts. Automaton has 24707 states and 31689 transitions. Word has length 49 [2021-11-07 07:34:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:15,605 INFO L470 AbstractCegarLoop]: Abstraction has 24707 states and 31689 transitions. [2021-11-07 07:34:15,606 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) [2021-11-07 07:34:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 24707 states and 31689 transitions. [2021-11-07 07:34:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 07:34:15,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:15,612 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] [2021-11-07 07:34:15,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:34:15,612 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)] === [2021-11-07 07:34:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash -960392490, now seen corresponding path program 1 times [2021-11-07 07:34:15,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:15,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219329399] [2021-11-07 07:34:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:15,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:15,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:15,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219329399] [2021-11-07 07:34:15,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219329399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:15,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:15,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:15,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740634424] [2021-11-07 07:34:15,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:34:15,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:15,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:34:15,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:15,811 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) [2021-11-07 07:34:17,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:17,457 INFO L93 Difference]: Finished difference Result 72950 states and 93628 transitions. [2021-11-07 07:34:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:34:17,458 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 [2021-11-07 07:34:17,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:17,582 INFO L225 Difference]: With dead ends: 72950 [2021-11-07 07:34:17,582 INFO L226 Difference]: Without dead ends: 48319 [2021-11-07 07:34:17,635 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48319 states. [2021-11-07 07:34:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48319 to 48009. [2021-11-07 07:34:18,706 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) [2021-11-07 07:34:19,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48009 states to 48009 states and 61688 transitions. [2021-11-07 07:34:19,033 INFO L78 Accepts]: Start accepts. Automaton has 48009 states and 61688 transitions. Word has length 61 [2021-11-07 07:34:19,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:19,033 INFO L470 AbstractCegarLoop]: Abstraction has 48009 states and 61688 transitions. [2021-11-07 07:34:19,033 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) [2021-11-07 07:34:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 48009 states and 61688 transitions. [2021-11-07 07:34:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 07:34:19,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:19,035 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] [2021-11-07 07:34:19,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:34:19,038 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)] === [2021-11-07 07:34:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1943570088, now seen corresponding path program 1 times [2021-11-07 07:34:19,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:19,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922718115] [2021-11-07 07:34:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:19,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:19,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:19,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922718115] [2021-11-07 07:34:19,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922718115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:19,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:19,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:19,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373929191] [2021-11-07 07:34:19,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:34:19,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:34:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:19,212 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) [2021-11-07 07:34:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:21,621 INFO L93 Difference]: Finished difference Result 142595 states and 183443 transitions. [2021-11-07 07:34:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:34:21,622 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 [2021-11-07 07:34:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:21,990 INFO L225 Difference]: With dead ends: 142595 [2021-11-07 07:34:21,990 INFO L226 Difference]: Without dead ends: 94713 [2021-11-07 07:34:22,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:22,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94713 states. [2021-11-07 07:34:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94713 to 94669. [2021-11-07 07:34:24,361 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) [2021-11-07 07:34:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94669 states to 94669 states and 121716 transitions. [2021-11-07 07:34:24,563 INFO L78 Accepts]: Start accepts. Automaton has 94669 states and 121716 transitions. Word has length 74 [2021-11-07 07:34:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:24,563 INFO L470 AbstractCegarLoop]: Abstraction has 94669 states and 121716 transitions. [2021-11-07 07:34:24,563 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) [2021-11-07 07:34:24,564 INFO L276 IsEmpty]: Start isEmpty. Operand 94669 states and 121716 transitions. [2021-11-07 07:34:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 07:34:24,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:24,565 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] [2021-11-07 07:34:24,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:34:24,566 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)] === [2021-11-07 07:34:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash 663706410, now seen corresponding path program 1 times [2021-11-07 07:34:24,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:24,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447706060] [2021-11-07 07:34:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:24,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:24,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:24,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447706060] [2021-11-07 07:34:24,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447706060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:24,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:24,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:24,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347967461] [2021-11-07 07:34:24,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:34:24,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:34:24,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:24,714 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) [2021-11-07 07:34:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:28,614 INFO L93 Difference]: Finished difference Result 235947 states and 303563 transitions. [2021-11-07 07:34:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:34:28,615 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 [2021-11-07 07:34:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:28,976 INFO L225 Difference]: With dead ends: 235947 [2021-11-07 07:34:28,977 INFO L226 Difference]: Without dead ends: 141405 [2021-11-07 07:34:29,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:34:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141405 states. [2021-11-07 07:34:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141405 to 141144. [2021-11-07 07:34:32,999 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) [2021-11-07 07:34:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141144 states to 141144 states and 181559 transitions. [2021-11-07 07:34:33,287 INFO L78 Accepts]: Start accepts. Automaton has 141144 states and 181559 transitions. Word has length 74 [2021-11-07 07:34:33,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:33,287 INFO L470 AbstractCegarLoop]: Abstraction has 141144 states and 181559 transitions. [2021-11-07 07:34:33,287 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) [2021-11-07 07:34:33,287 INFO L276 IsEmpty]: Start isEmpty. Operand 141144 states and 181559 transitions. [2021-11-07 07:34:33,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 07:34:33,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:33,289 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] [2021-11-07 07:34:33,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 07:34:33,290 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)] === [2021-11-07 07:34:33,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash 820923817, now seen corresponding path program 1 times [2021-11-07 07:34:33,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:33,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105921070] [2021-11-07 07:34:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:33,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:34:33,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:33,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105921070] [2021-11-07 07:34:33,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105921070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:33,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:33,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:33,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359020954] [2021-11-07 07:34:33,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:34:33,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:33,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:34:33,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:34:33,534 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) [2021-11-07 07:34:37,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:37,262 INFO L93 Difference]: Finished difference Result 141144 states and 181559 transitions. [2021-11-07 07:34:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:34:37,262 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 [2021-11-07 07:34:37,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:37,504 INFO L225 Difference]: With dead ends: 141144 [2021-11-07 07:34:37,504 INFO L226 Difference]: Without dead ends: 141138 [2021-11-07 07:34:37,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:34:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141138 states. [2021-11-07 07:34:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141138 to 141138. [2021-11-07 07:34:41,690 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) [2021-11-07 07:34:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141138 states to 141138 states and 181553 transitions. [2021-11-07 07:34:42,336 INFO L78 Accepts]: Start accepts. Automaton has 141138 states and 181553 transitions. Word has length 75 [2021-11-07 07:34:42,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:42,336 INFO L470 AbstractCegarLoop]: Abstraction has 141138 states and 181553 transitions. [2021-11-07 07:34:42,336 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) [2021-11-07 07:34:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 141138 states and 181553 transitions. [2021-11-07 07:34:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:34:42,337 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:42,337 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] [2021-11-07 07:34:42,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 07:34:42,338 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)] === [2021-11-07 07:34:42,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1366046868, now seen corresponding path program 1 times [2021-11-07 07:34:42,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:42,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114941637] [2021-11-07 07:34:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:42,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 07:34:42,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:42,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114941637] [2021-11-07 07:34:42,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114941637] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:34:42,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:34:42,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:34:42,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509513820] [2021-11-07 07:34:42,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:34:42,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:34:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:34:42,547 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)