./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G --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 af0382669342cd1b96ae06a23957b47efa45a6d5fd31066fb67e67230764554c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:56:51,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:56:51,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:56:51,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:56:51,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:56:51,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:56:51,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:56:51,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:56:51,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:56:51,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:56:51,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:56:51,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:56:51,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:56:51,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:56:51,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:56:51,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:56:51,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:56:51,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:56:51,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:56:51,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:56:51,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:56:51,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:56:51,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:56:51,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:56:51,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:56:51,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:56:51,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:56:51,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:56:51,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:56:51,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:56:51,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:56:51,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:56:51,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:56:51,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:56:51,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:56:51,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:56:51,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:56:51,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:56:51,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:56:51,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:56:51,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:56:51,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 13:56:51,242 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:56:51,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:56:51,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:56:51,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:56:51,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:56:51,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:56:51,254 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:56:51,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:56:51,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:56:51,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:56:51,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:56:51,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:56:51,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:56:51,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:56:51,257 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:56:51,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:56:51,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:56:51,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:56:51,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:56:51,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:56:51,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:56:51,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:56:51,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:56:51,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:56:51,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:56:51,260 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:56:51,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:56:51,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:56:51,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:56:51,270 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_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af0382669342cd1b96ae06a23957b47efa45a6d5fd31066fb67e67230764554c [2021-11-23 13:56:51,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:56:51,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:56:51,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:56:51,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:56:51,567 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:56:51,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-23 13:56:51,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/data/f5a5726b1/e945f87da0db48c98ed2f6f1d16ebad1/FLAG5eecbf906 [2021-11-23 13:56:52,949 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:56:52,950 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-23 13:56:53,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/data/f5a5726b1/e945f87da0db48c98ed2f6f1d16ebad1/FLAG5eecbf906 [2021-11-23 13:56:53,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/data/f5a5726b1/e945f87da0db48c98ed2f6f1d16ebad1 [2021-11-23 13:56:53,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:56:53,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:56:53,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:56:53,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:56:53,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:56:53,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:53" (1/1) ... [2021-11-23 13:56:53,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566569a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:53, skipping insertion in model container [2021-11-23 13:56:53,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:53" (1/1) ... [2021-11-23 13:56:53,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:56:53,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:57:00,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582586,582599] [2021-11-23 13:57:00,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582733,582746] [2021-11-23 13:57:00,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582872,582885] [2021-11-23 13:57:00,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[583030,583043] [2021-11-23 13:57:00,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:57:00,478 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:57:01,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582586,582599] [2021-11-23 13:57:01,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582733,582746] [2021-11-23 13:57:01,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[582872,582885] [2021-11-23 13:57:01,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i[583030,583043] [2021-11-23 13:57:01,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:57:01,617 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:57:01,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01 WrapperNode [2021-11-23 13:57:01,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:57:01,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:57:01,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:57:01,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:57:01,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:01,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:06,868 INFO L137 Inliner]: procedures = 659, calls = 5655, calls flagged for inlining = 1528, calls inlined = 14252, statements flattened = 157462 [2021-11-23 13:57:06,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:57:06,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:57:06,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:57:06,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:57:06,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:06,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:07,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:07,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:10,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:10,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:10,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:12,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:57:12,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:57:12,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:57:12,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:57:12,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (1/1) ... [2021-11-23 13:57:12,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:57:12,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:57:12,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:57:12,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_979bb321-3e3a-4276-b63f-eebe22bfc6f3/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:57:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:57:12,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 13:57:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 13:57:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:57:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:57:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:57:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:57:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 13:57:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:57:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:57:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 13:57:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 13:57:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 13:57:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:57:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:57:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:57:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:57:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:57:14,023 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:57:14,025 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:59:15,082 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 13:59:15,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 13:59:15,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#1: ldv_switch_2_#res#1 := 0; [2021-11-23 13:59:15,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res#1 := 0; [2021-11-23 13:59:15,083 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res#1 := 0; [2021-11-23 13:59:15,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res#1 := 0; [2021-11-23 13:59:15,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res#1 := 0; [2021-11-23 13:59:15,084 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res#1 := 0; [2021-11-23 13:59:15,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res#1 := 0; [2021-11-23 13:59:15,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 13:59:15,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 13:59:15,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#7: ldv_switch_0_#res#1 := 0; [2021-11-23 13:59:15,085 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#8: ldv_switch_0_#res#1 := 0; [2021-11-23 13:59:15,086 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#1: ldv_switch_3_#res#1 := 0; [2021-11-23 13:59:15,086 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res#1 := 0; [2021-11-23 13:59:15,086 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#3: ldv_switch_3_#res#1 := 0; [2021-11-23 13:59:15,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 13:59:15,098 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:59:15,220 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:59:15,220 INFO L301 CfgBuilder]: Removed 50 assume(true) statements. [2021-11-23 13:59:15,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:15 BoogieIcfgContainer [2021-11-23 13:59:15,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:59:15,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:59:15,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:59:15,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:59:15,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:56:53" (1/3) ... [2021-11-23 13:59:15,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23efc120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:15, skipping insertion in model container [2021-11-23 13:59:15,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:57:01" (2/3) ... [2021-11-23 13:59:15,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23efc120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:15, skipping insertion in model container [2021-11-23 13:59:15,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:15" (3/3) ... [2021-11-23 13:59:15,252 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-chelsio-cxgb4vf-cxgb4vf.cil.i [2021-11-23 13:59:15,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:59:15,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 13:59:15,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:59:15,412 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 [2021-11-23 13:59:15,421 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 13:59:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 24044 states, 24040 states have (on average 1.2482113144758735) internal successors, (30007), 24043 states have internal predecessors, (30007), 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) [2021-11-23 13:59:15,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-23 13:59:15,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:15,750 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:59:15,751 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 13:59:15,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash 141208852, now seen corresponding path program 1 times [2021-11-23 13:59:15,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:15,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180416153] [2021-11-23 13:59:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:15,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:59:16,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:59:16,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180416153] [2021-11-23 13:59:16,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180416153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:59:16,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:59:16,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:59:16,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930678865] [2021-11-23 13:59:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:59:16,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:59:16,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:59:16,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:59:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:59:17,002 INFO L87 Difference]: Start difference. First operand has 24044 states, 24040 states have (on average 1.2482113144758735) internal successors, (30007), 24043 states have internal predecessors, (30007), 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 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2021-11-23 13:59:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:59:19,196 INFO L93 Difference]: Finished difference Result 70378 states and 87608 transitions. [2021-11-23 13:59:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:59:19,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 195 [2021-11-23 13:59:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:59:19,485 INFO L225 Difference]: With dead ends: 70378 [2021-11-23 13:59:19,485 INFO L226 Difference]: Without dead ends: 46178 [2021-11-23 13:59:19,559 INFO L932 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 [2021-11-23 13:59:19,565 INFO L933 BasicCegarLoop]: 29249 mSDtfsCounter, 28383 mSDsluCounter, 29157 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28383 SdHoareTripleChecker+Valid, 58406 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:59:19,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28383 Valid, 58406 Invalid, 39 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:59:19,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46178 states. [2021-11-23 13:59:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46178 to 46176. [2021-11-23 13:59:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46176 states, 46172 states have (on average 1.2158451009269686) internal successors, (56138), 46175 states have internal predecessors, (56138), 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) [2021-11-23 13:59:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46176 states to 46176 states and 56138 transitions. [2021-11-23 13:59:21,734 INFO L78 Accepts]: Start accepts. Automaton has 46176 states and 56138 transitions. Word has length 195 [2021-11-23 13:59:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:59:21,739 INFO L470 AbstractCegarLoop]: Abstraction has 46176 states and 56138 transitions. [2021-11-23 13:59:21,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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) [2021-11-23 13:59:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 46176 states and 56138 transitions. [2021-11-23 13:59:21,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-23 13:59:21,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:21,765 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:59:21,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:59:21,765 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 13:59:21,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1436260071, now seen corresponding path program 1 times [2021-11-23 13:59:21,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:21,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639823384] [2021-11-23 13:59:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:21,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:59:22,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:59:22,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639823384] [2021-11-23 13:59:22,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639823384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:59:22,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:59:22,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:59:22,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605501048] [2021-11-23 13:59:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:59:22,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:59:22,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:59:22,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:59:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:59:22,410 INFO L87 Difference]: Start difference. First operand 46176 states and 56138 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2021-11-23 13:59:24,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:59:24,791 INFO L93 Difference]: Finished difference Result 81545 states and 99368 transitions. [2021-11-23 13:59:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:59:24,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2021-11-23 13:59:24,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:59:24,897 INFO L225 Difference]: With dead ends: 81545 [2021-11-23 13:59:24,897 INFO L226 Difference]: Without dead ends: 35838 [2021-11-23 13:59:24,984 INFO L932 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 [2021-11-23 13:59:24,986 INFO L933 BasicCegarLoop]: 28379 mSDtfsCounter, 7711 mSDsluCounter, 28321 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7711 SdHoareTripleChecker+Valid, 56700 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:59:24,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7711 Valid, 56700 Invalid, 100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:59:25,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35838 states. [2021-11-23 13:59:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35838 to 35816. [2021-11-23 13:59:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35816 states, 35812 states have (on average 1.2203730593097286) internal successors, (43704), 35815 states have internal predecessors, (43704), 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) [2021-11-23 13:59:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35816 states to 35816 states and 43704 transitions. [2021-11-23 13:59:26,203 INFO L78 Accepts]: Start accepts. Automaton has 35816 states and 43704 transitions. Word has length 217 [2021-11-23 13:59:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:59:26,205 INFO L470 AbstractCegarLoop]: Abstraction has 35816 states and 43704 transitions. [2021-11-23 13:59:26,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2021-11-23 13:59:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 35816 states and 43704 transitions. [2021-11-23 13:59:26,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-23 13:59:26,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:26,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:59:26,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:59:26,216 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 13:59:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:26,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2009960202, now seen corresponding path program 1 times [2021-11-23 13:59:26,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:26,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758266592] [2021-11-23 13:59:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:26,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:59:26,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:59:26,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758266592] [2021-11-23 13:59:26,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758266592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:59:26,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:59:26,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:59:26,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901656076] [2021-11-23 13:59:26,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:59:26,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:59:26,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:59:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:59:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:59:26,742 INFO L87 Difference]: Start difference. First operand 35816 states and 43704 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2021-11-23 13:59:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:59:28,857 INFO L93 Difference]: Finished difference Result 93956 states and 114629 transitions. [2021-11-23 13:59:28,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:59:28,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 220 [2021-11-23 13:59:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:59:29,047 INFO L225 Difference]: With dead ends: 93956 [2021-11-23 13:59:29,047 INFO L226 Difference]: Without dead ends: 64788 [2021-11-23 13:59:29,116 INFO L932 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 [2021-11-23 13:59:29,121 INFO L933 BasicCegarLoop]: 35996 mSDtfsCounter, 27731 mSDsluCounter, 28372 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27731 SdHoareTripleChecker+Valid, 64368 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:59:29,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27731 Valid, 64368 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:59:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64788 states. [2021-11-23 13:59:30,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64788 to 64786. [2021-11-23 13:59:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64786 states, 64782 states have (on average 1.2201383100243894) internal successors, (79043), 64785 states have internal predecessors, (79043), 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) [2021-11-23 13:59:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64786 states to 64786 states and 79043 transitions. [2021-11-23 13:59:31,515 INFO L78 Accepts]: Start accepts. Automaton has 64786 states and 79043 transitions. Word has length 220 [2021-11-23 13:59:31,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:59:31,516 INFO L470 AbstractCegarLoop]: Abstraction has 64786 states and 79043 transitions. [2021-11-23 13:59:31,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2021-11-23 13:59:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 64786 states and 79043 transitions. [2021-11-23 13:59:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-23 13:59:31,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:31,538 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:59:31,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:59:31,539 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 13:59:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:31,540 INFO L85 PathProgramCache]: Analyzing trace with hash 15815496, now seen corresponding path program 1 times [2021-11-23 13:59:31,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:31,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642990300] [2021-11-23 13:59:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:31,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 13:59:32,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:59:32,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642990300] [2021-11-23 13:59:32,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642990300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:59:32,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:59:32,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:59:32,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172774148] [2021-11-23 13:59:32,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:59:32,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:59:32,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:59:32,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:59:32,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:59:32,393 INFO L87 Difference]: Start difference. First operand 64786 states and 79043 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2021-11-23 13:59:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:59:34,131 INFO L93 Difference]: Finished difference Result 64786 states and 79043 transitions. [2021-11-23 13:59:34,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:59:34,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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 220 [2021-11-23 13:59:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:59:34,501 INFO L225 Difference]: With dead ends: 64786 [2021-11-23 13:59:34,502 INFO L226 Difference]: Without dead ends: 64748 [2021-11-23 13:59:34,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:59:34,520 INFO L933 BasicCegarLoop]: 28391 mSDtfsCounter, 28188 mSDsluCounter, 28391 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28188 SdHoareTripleChecker+Valid, 56782 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:59:34,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28188 Valid, 56782 Invalid, 10 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:59:34,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64748 states. [2021-11-23 13:59:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64748 to 64748. [2021-11-23 13:59:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64748 states, 64747 states have (on average 1.22016464083278) internal successors, (79002), 64747 states have internal predecessors, (79002), 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) [2021-11-23 13:59:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64748 states to 64748 states and 79002 transitions. [2021-11-23 13:59:36,931 INFO L78 Accepts]: Start accepts. Automaton has 64748 states and 79002 transitions. Word has length 220 [2021-11-23 13:59:36,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:59:36,931 INFO L470 AbstractCegarLoop]: Abstraction has 64748 states and 79002 transitions. [2021-11-23 13:59:36,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2021-11-23 13:59:36,932 INFO L276 IsEmpty]: Start isEmpty. Operand 64748 states and 79002 transitions. [2021-11-23 13:59:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-23 13:59:36,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:36,974 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:59:36,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:59:36,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 13:59:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:36,976 INFO L85 PathProgramCache]: Analyzing trace with hash 134230474, now seen corresponding path program 1 times [2021-11-23 13:59:36,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:36,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560506355] [2021-11-23 13:59:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:36,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:59:37,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:59:37,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560506355] [2021-11-23 13:59:37,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560506355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:59:37,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:59:37,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:59:37,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357689768] [2021-11-23 13:59:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:59:37,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:59:37,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:59:37,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:59:37,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:59:37,567 INFO L87 Difference]: Start difference. First operand 64748 states and 79002 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2021-11-23 13:59:40,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:59:40,353 INFO L93 Difference]: Finished difference Result 135280 states and 165202 transitions. [2021-11-23 13:59:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:59:40,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 265 [2021-11-23 13:59:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:59:40,536 INFO L225 Difference]: With dead ends: 135280 [2021-11-23 13:59:40,536 INFO L226 Difference]: Without dead ends: 77180 [2021-11-23 13:59:40,647 INFO L932 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 [2021-11-23 13:59:40,650 INFO L933 BasicCegarLoop]: 36043 mSDtfsCounter, 7674 mSDsluCounter, 28291 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7674 SdHoareTripleChecker+Valid, 64334 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:59:40,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7674 Valid, 64334 Invalid, 86 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:59:40,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77180 states. [2021-11-23 13:59:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77180 to 77176. [2021-11-23 13:59:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77176 states, 77175 states have (on average 1.221859410430839) internal successors, (94297), 77175 states have internal predecessors, (94297), 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) [2021-11-23 13:59:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77176 states to 77176 states and 94297 transitions. [2021-11-23 13:59:43,282 INFO L78 Accepts]: Start accepts. Automaton has 77176 states and 94297 transitions. Word has length 265 [2021-11-23 13:59:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:59:43,283 INFO L470 AbstractCegarLoop]: Abstraction has 77176 states and 94297 transitions. [2021-11-23 13:59:43,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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) [2021-11-23 13:59:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 77176 states and 94297 transitions. [2021-11-23 13:59:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-23 13:59:43,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:43,349 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:59:43,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:59:43,349 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 13:59:43,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1922706881, now seen corresponding path program 1 times [2021-11-23 13:59:43,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:43,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209984060] [2021-11-23 13:59:43,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:43,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:59:44,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:59:44,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209984060] [2021-11-23 13:59:44,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209984060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:59:44,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:59:44,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:59:44,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872257392] [2021-11-23 13:59:44,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:59:44,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:59:44,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:59:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:59:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:59:44,255 INFO L87 Difference]: Start difference. First operand 77176 states and 94297 transitions. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-11-23 13:59:46,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:59:46,809 INFO L93 Difference]: Finished difference Result 160130 states and 195778 transitions. [2021-11-23 13:59:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:59:46,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 307 [2021-11-23 13:59:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:59:47,027 INFO L225 Difference]: With dead ends: 160130 [2021-11-23 13:59:47,027 INFO L226 Difference]: Without dead ends: 89602 [2021-11-23 13:59:47,107 INFO L932 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 [2021-11-23 13:59:47,108 INFO L933 BasicCegarLoop]: 36044 mSDtfsCounter, 7674 mSDsluCounter, 28305 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7674 SdHoareTripleChecker+Valid, 64349 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:59:47,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7674 Valid, 64349 Invalid, 79 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:59:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89602 states. [2021-11-23 13:59:49,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89602 to 89598. [2021-11-23 13:59:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89598 states, 89597 states have (on average 1.22309898768932) internal successors, (109586), 89597 states have internal predecessors, (109586), 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) [2021-11-23 13:59:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89598 states to 89598 states and 109586 transitions. [2021-11-23 13:59:50,002 INFO L78 Accepts]: Start accepts. Automaton has 89598 states and 109586 transitions. Word has length 307 [2021-11-23 13:59:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:59:50,003 INFO L470 AbstractCegarLoop]: Abstraction has 89598 states and 109586 transitions. [2021-11-23 13:59:50,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-11-23 13:59:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 89598 states and 109586 transitions. [2021-11-23 13:59:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-23 13:59:50,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:50,044 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:59:50,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:59:50,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 13:59:50,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:50,045 INFO L85 PathProgramCache]: Analyzing trace with hash 550899583, now seen corresponding path program 1 times [2021-11-23 13:59:50,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:50,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816873110] [2021-11-23 13:59:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:50,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:59:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-23 13:59:50,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:59:50,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816873110] [2021-11-23 13:59:50,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816873110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:59:50,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:59:50,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:59:50,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600939486] [2021-11-23 13:59:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:59:50,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:59:50,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:59:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:59:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:59:50,836 INFO L87 Difference]: Start difference. First operand 89598 states and 109586 transitions. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2021-11-23 13:59:55,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:59:55,403 INFO L93 Difference]: Finished difference Result 172542 states and 211034 transitions. [2021-11-23 13:59:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:59:55,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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 307 [2021-11-23 13:59:55,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:59:55,405 INFO L225 Difference]: With dead ends: 172542 [2021-11-23 13:59:55,405 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:59:55,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:59:55,543 INFO L933 BasicCegarLoop]: 56190 mSDtfsCounter, 55916 mSDsluCounter, 28358 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55916 SdHoareTripleChecker+Valid, 84548 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:59:55,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55916 Valid, 84548 Invalid, 4 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:59:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:59:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:59:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-23 13:59:55,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:59:55,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 307 [2021-11-23 13:59:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:59:55,545 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:59:55,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2021-11-23 13:59:55,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:59:55,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:59:55,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-23 13:59:55,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-11-23 13:59:55,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2021-11-23 13:59:55,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-11-23 13:59:55,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:59:55,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.