./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-wireless-ath-ath10k-ath10k_pci.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 abeeab492b640654fe55aa04dc4f56985d1437aed7a22f3a0d2f5e29c1d87ba8 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 19:33:11,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 19:33:11,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 19:33:11,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 19:33:11,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 19:33:11,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 19:33:11,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 19:33:11,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 19:33:11,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 19:33:11,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 19:33:11,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 19:33:11,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 19:33:11,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 19:33:11,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 19:33:11,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 19:33:11,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 19:33:11,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 19:33:11,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 19:33:11,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 19:33:11,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 19:33:11,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 19:33:11,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 19:33:11,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 19:33:11,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 19:33:11,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 19:33:11,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 19:33:11,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 19:33:11,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 19:33:11,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 19:33:11,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 19:33:11,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 19:33:11,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 19:33:11,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 19:33:11,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 19:33:11,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 19:33:11,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 19:33:11,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 19:33:11,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 19:33:11,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 19:33:11,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 19:33:11,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 19:33:11,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 19:33:11,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 19:33:11,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 19:33:11,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 19:33:11,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 19:33:11,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 19:33:11,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 19:33:11,476 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 19:33:11,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 19:33:11,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 19:33:11,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 19:33:11,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 19:33:11,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 19:33:11,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 19:33:11,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 19:33:11,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 19:33:11,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 19:33:11,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 19:33:11,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 19:33:11,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 19:33:11,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:33:11,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 19:33:11,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 19:33:11,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 19:33:11,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 19:33:11,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 19:33:11,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 19:33:11,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 19:33:11,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 19:33:11,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 19:33:11,480 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abeeab492b640654fe55aa04dc4f56985d1437aed7a22f3a0d2f5e29c1d87ba8 [2021-11-07 19:33:11,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 19:33:11,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 19:33:11,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 19:33:11,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 19:33:11,711 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 19:33:11,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-07 19:33:11,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6601becf/eeda1484237040a391d5e09df3371523/FLAG3306b3de4 [2021-11-07 19:33:12,416 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 19:33:12,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-07 19:33:12,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6601becf/eeda1484237040a391d5e09df3371523/FLAG3306b3de4 [2021-11-07 19:33:12,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6601becf/eeda1484237040a391d5e09df3371523 [2021-11-07 19:33:12,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 19:33:12,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 19:33:12,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 19:33:12,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 19:33:12,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 19:33:12,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:33:12" (1/1) ... [2021-11-07 19:33:12,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100e9d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:12, skipping insertion in model container [2021-11-07 19:33:12,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:33:12" (1/1) ... [2021-11-07 19:33:12,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 19:33:12,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 19:33:14,837 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[406186,406199] [2021-11-07 19:33:14,839 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[406333,406346] [2021-11-07 19:33:14,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[406472,406485] [2021-11-07 19:33:14,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[406630,406643] [2021-11-07 19:33:14,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:33:14,884 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 19:33:15,159 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[406186,406199] [2021-11-07 19:33:15,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[406333,406346] [2021-11-07 19:33:15,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[406472,406485] [2021-11-07 19:33:15,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[406630,406643] [2021-11-07 19:33:15,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 19:33:15,261 INFO L208 MainTranslator]: Completed translation [2021-11-07 19:33:15,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15 WrapperNode [2021-11-07 19:33:15,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 19:33:15,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 19:33:15,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 19:33:15,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 19:33:15,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:15,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:17,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 19:33:17,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 19:33:17,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 19:33:17,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 19:33:17,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:17,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:17,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:17,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:19,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:19,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:19,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:19,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 19:33:19,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 19:33:19,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 19:33:19,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 19:33:19,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (1/1) ... [2021-11-07 19:33:19,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 19:33:19,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 19:33:19,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 19:33:19,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 19:33:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 19:33:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 19:33:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 19:33:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 19:33:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 19:33:19,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 19:33:19,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 19:33:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 19:33:19,875 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_access [2021-11-07 19:33:19,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_access [2021-11-07 19:33:19,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 19:33:19,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 19:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 19:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 19:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 19:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 19:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_mem [2021-11-07 19:33:19,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_mem [2021-11-07 19:33:19,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 19:34:12,884 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-07 19:34:12,884 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-07 19:34:12,884 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-07 19:34:12,884 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 19:34:12,885 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 19:34:12,885 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 19:34:12,886 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-07 19:34:12,889 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 19:34:12,890 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 19:34:13,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 19:34:13,034 INFO L299 CfgBuilder]: Removed 21223 assume(true) statements. [2021-11-07 19:34:13,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:34:13 BoogieIcfgContainer [2021-11-07 19:34:13,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 19:34:13,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 19:34:13,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 19:34:13,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 19:34:13,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:33:12" (1/3) ... [2021-11-07 19:34:13,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5586cdf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:34:13, skipping insertion in model container [2021-11-07 19:34:13,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:33:15" (2/3) ... [2021-11-07 19:34:13,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5586cdf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:34:13, skipping insertion in model container [2021-11-07 19:34:13,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:34:13" (3/3) ... [2021-11-07 19:34:13,056 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-07 19:34:13,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 19:34:13,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 19:34:13,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 19:34:13,149 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 19:34:13,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 19:34:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 16277 states, 16248 states have (on average 1.3103151157065485) internal successors, (21290), 16251 states have internal predecessors, (21290), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-07 19:34:13,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 19:34:13,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:34:13,329 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] [2021-11-07 19:34:13,330 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 19:34:13,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:34:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1125938142, now seen corresponding path program 1 times [2021-11-07 19:34:13,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:34:13,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194466438] [2021-11-07 19:34:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:34:13,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:34:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:34:14,009 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 19:34:14,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:34:14,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194466438] [2021-11-07 19:34:14,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194466438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:34:14,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:34:14,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:34:14,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702023429] [2021-11-07 19:34:14,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:34:14,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:34:14,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:34:14,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:34:14,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:14,063 INFO L87 Difference]: Start difference. First operand has 16277 states, 16248 states have (on average 1.3103151157065485) internal successors, (21290), 16251 states have internal predecessors, (21290), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:34:16,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:34:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:34:17,022 INFO L93 Difference]: Finished difference Result 48215 states and 63252 transitions. [2021-11-07 19:34:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:34:17,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2021-11-07 19:34:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:34:17,173 INFO L225 Difference]: With dead ends: 48215 [2021-11-07 19:34:17,173 INFO L226 Difference]: Without dead ends: 31466 [2021-11-07 19:34:17,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:17,225 INFO L933 BasicCegarLoop]: 21042 mSDtfsCounter, 20755 mSDsluCounter, 20968 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2083.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20755 SdHoareTripleChecker+Valid, 42010 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.82ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2223.39ms IncrementalHoareTripleChecker+Time [2021-11-07 19:34:17,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20755 Valid, 42010 Invalid, 34 Unknown, 0 Unchecked, 78.82ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2223.39ms Time] [2021-11-07 19:34:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31466 states. [2021-11-07 19:34:18,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31466 to 31464. [2021-11-07 19:34:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31464 states, 31410 states have (on average 1.286341929321872) internal successors, (40404), 31413 states have internal predecessors, (40404), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-07 19:34:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31464 states to 31464 states and 40496 transitions. [2021-11-07 19:34:18,164 INFO L78 Accepts]: Start accepts. Automaton has 31464 states and 40496 transitions. Word has length 63 [2021-11-07 19:34:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:34:18,165 INFO L470 AbstractCegarLoop]: Abstraction has 31464 states and 40496 transitions. [2021-11-07 19:34:18,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 19:34:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 31464 states and 40496 transitions. [2021-11-07 19:34:18,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 19:34:18,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:34:18,170 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] [2021-11-07 19:34:18,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 19:34:18,171 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)] === [2021-11-07 19:34:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:34:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash 127215956, now seen corresponding path program 1 times [2021-11-07 19:34:18,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:34:18,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820057892] [2021-11-07 19:34:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:34:18,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:34:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:34:18,462 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 19:34:18,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:34:18,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820057892] [2021-11-07 19:34:18,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820057892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:34:18,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:34:18,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:34:18,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109329590] [2021-11-07 19:34:18,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:34:18,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:34:18,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:34:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:34:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:18,469 INFO L87 Difference]: Start difference. First operand 31464 states and 40496 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 19:34:20,508 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:34:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:34:21,486 INFO L93 Difference]: Finished difference Result 62122 states and 79918 transitions. [2021-11-07 19:34:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:34:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2021-11-07 19:34:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:34:21,566 INFO L225 Difference]: With dead ends: 62122 [2021-11-07 19:34:21,566 INFO L226 Difference]: Without dead ends: 30782 [2021-11-07 19:34:21,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.95ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:21,636 INFO L933 BasicCegarLoop]: 20341 mSDtfsCounter, 9601 mSDsluCounter, 20286 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2139.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9601 SdHoareTripleChecker+Valid, 40627 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.54ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2277.04ms IncrementalHoareTripleChecker+Time [2021-11-07 19:34:21,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9601 Valid, 40627 Invalid, 100 Unknown, 0 Unchecked, 45.54ms Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2277.04ms Time] [2021-11-07 19:34:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30782 states. [2021-11-07 19:34:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30782 to 30760. [2021-11-07 19:34:22,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30760 states, 30709 states have (on average 1.2838581523331922) internal successors, (39426), 30712 states have internal predecessors, (39426), 41 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-07 19:34:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30760 states to 30760 states and 39508 transitions. [2021-11-07 19:34:22,337 INFO L78 Accepts]: Start accepts. Automaton has 30760 states and 39508 transitions. Word has length 87 [2021-11-07 19:34:22,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:34:22,339 INFO L470 AbstractCegarLoop]: Abstraction has 30760 states and 39508 transitions. [2021-11-07 19:34:22,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 19:34:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 30760 states and 39508 transitions. [2021-11-07 19:34:22,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 19:34:22,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:34:22,342 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:34:22,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 19:34:22,342 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 19:34:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:34:22,343 INFO L85 PathProgramCache]: Analyzing trace with hash 315884674, now seen corresponding path program 1 times [2021-11-07 19:34:22,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:34:22,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685224213] [2021-11-07 19:34:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:34:22,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:34:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:34:22,657 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 19:34:22,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:34:22,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685224213] [2021-11-07 19:34:22,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685224213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:34:22,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:34:22,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:34:22,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012552206] [2021-11-07 19:34:22,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:34:22,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:34:22,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:34:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:34:22,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:22,660 INFO L87 Difference]: Start difference. First operand 30760 states and 39508 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 19:34:24,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:34:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:34:25,620 INFO L93 Difference]: Finished difference Result 77031 states and 99026 transitions. [2021-11-07 19:34:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:34:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2021-11-07 19:34:25,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:34:25,751 INFO L225 Difference]: With dead ends: 77031 [2021-11-07 19:34:25,752 INFO L226 Difference]: Without dead ends: 53845 [2021-11-07 19:34:25,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:25,804 INFO L933 BasicCegarLoop]: 29915 mSDtfsCounter, 20141 mSDsluCounter, 20328 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2059.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20141 SdHoareTripleChecker+Valid, 50243 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.04ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2214.90ms IncrementalHoareTripleChecker+Time [2021-11-07 19:34:25,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20141 Valid, 50243 Invalid, 30 Unknown, 0 Unchecked, 40.04ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2214.90ms Time] [2021-11-07 19:34:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53845 states. [2021-11-07 19:34:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53845 to 53843. [2021-11-07 19:34:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53843 states, 53756 states have (on average 1.2846007887491628) internal successors, (69055), 53759 states have internal predecessors, (69055), 73 states have call successors, (73), 10 states have call predecessors, (73), 10 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-07 19:34:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53843 states to 53843 states and 69201 transitions. [2021-11-07 19:34:27,163 INFO L78 Accepts]: Start accepts. Automaton has 53843 states and 69201 transitions. Word has length 94 [2021-11-07 19:34:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:34:27,165 INFO L470 AbstractCegarLoop]: Abstraction has 53843 states and 69201 transitions. [2021-11-07 19:34:27,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 19:34:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 53843 states and 69201 transitions. [2021-11-07 19:34:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 19:34:27,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:34:27,169 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:34:27,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 19:34:27,169 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 19:34:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:34:27,170 INFO L85 PathProgramCache]: Analyzing trace with hash -963979004, now seen corresponding path program 1 times [2021-11-07 19:34:27,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:34:27,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39933644] [2021-11-07 19:34:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:34:27,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:34:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:34:27,337 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 19:34:27,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:34:27,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39933644] [2021-11-07 19:34:27,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39933644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:34:27,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:34:27,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:34:27,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659190922] [2021-11-07 19:34:27,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:34:27,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:34:27,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:34:27,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:34:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:27,340 INFO L87 Difference]: Start difference. First operand 53843 states and 69201 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 19:34:29,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:34:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:34:30,527 INFO L93 Difference]: Finished difference Result 123199 states and 158416 transitions. [2021-11-07 19:34:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:34:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2021-11-07 19:34:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:34:30,823 INFO L225 Difference]: With dead ends: 123199 [2021-11-07 19:34:30,823 INFO L226 Difference]: Without dead ends: 76930 [2021-11-07 19:34:30,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:30,887 INFO L933 BasicCegarLoop]: 40489 mSDtfsCounter, 20143 mSDsluCounter, 20327 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2057.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20143 SdHoareTripleChecker+Valid, 60816 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.81ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2205.30ms IncrementalHoareTripleChecker+Time [2021-11-07 19:34:30,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20143 Valid, 60816 Invalid, 32 Unknown, 0 Unchecked, 40.81ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2205.30ms Time] [2021-11-07 19:34:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76930 states. [2021-11-07 19:34:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76930 to 76921. [2021-11-07 19:34:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76921 states, 76798 states have (on average 1.2849162738612985) internal successors, (98679), 76801 states have internal predecessors, (98679), 105 states have call successors, (105), 14 states have call predecessors, (105), 14 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2021-11-07 19:34:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76921 states to 76921 states and 98889 transitions. [2021-11-07 19:34:32,275 INFO L78 Accepts]: Start accepts. Automaton has 76921 states and 98889 transitions. Word has length 94 [2021-11-07 19:34:32,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:34:32,276 INFO L470 AbstractCegarLoop]: Abstraction has 76921 states and 98889 transitions. [2021-11-07 19:34:32,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 19:34:32,277 INFO L276 IsEmpty]: Start isEmpty. Operand 76921 states and 98889 transitions. [2021-11-07 19:34:32,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 19:34:32,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:34:32,282 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 19:34:32,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 19:34:32,283 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 19:34:32,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:34:32,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1673251382, now seen corresponding path program 1 times [2021-11-07 19:34:32,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:34:32,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882041689] [2021-11-07 19:34:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:34:32,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:34:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:34:32,478 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 19:34:32,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:34:32,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882041689] [2021-11-07 19:34:32,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882041689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:34:32,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:34:32,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 19:34:32,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820270290] [2021-11-07 19:34:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:34:32,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:34:32,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:34:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:34:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:34:32,483 INFO L87 Difference]: Start difference. First operand 76921 states and 98889 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 19:34:33,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:34:33,818 INFO L93 Difference]: Finished difference Result 76921 states and 98889 transitions. [2021-11-07 19:34:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 19:34:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 95 [2021-11-07 19:34:33,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:34:33,962 INFO L225 Difference]: With dead ends: 76921 [2021-11-07 19:34:33,962 INFO L226 Difference]: Without dead ends: 69443 [2021-11-07 19:34:33,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 19:34:33,998 INFO L933 BasicCegarLoop]: 20344 mSDtfsCounter, 20265 mSDsluCounter, 20344 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20265 SdHoareTripleChecker+Valid, 40688 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.65ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.88ms IncrementalHoareTripleChecker+Time [2021-11-07 19:34:33,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20265 Valid, 40688 Invalid, 10 Unknown, 0 Unchecked, 43.65ms Time], IncrementalHoareTripleChecker [5 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 47.88ms Time] [2021-11-07 19:34:34,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69443 states. [2021-11-07 19:34:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69443 to 69443. [2021-11-07 19:34:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69443 states, 69334 states have (on average 1.2851847578388669) internal successors, (89107), 69334 states have internal predecessors, (89107), 96 states have call successors, (96), 12 states have call predecessors, (96), 12 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-07 19:34:35,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69443 states to 69443 states and 89299 transitions. [2021-11-07 19:34:35,401 INFO L78 Accepts]: Start accepts. Automaton has 69443 states and 89299 transitions. Word has length 95 [2021-11-07 19:34:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:34:35,401 INFO L470 AbstractCegarLoop]: Abstraction has 69443 states and 89299 transitions. [2021-11-07 19:34:35,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 19:34:35,401 INFO L276 IsEmpty]: Start isEmpty. Operand 69443 states and 89299 transitions. [2021-11-07 19:34:35,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 19:34:35,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:34:35,414 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] [2021-11-07 19:34:35,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 19:34:35,415 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)] === [2021-11-07 19:34:35,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:34:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash -632003462, now seen corresponding path program 1 times [2021-11-07 19:34:35,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:34:35,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926890216] [2021-11-07 19:34:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:34:35,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:34:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:34:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 19:34:35,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:34:35,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926890216] [2021-11-07 19:34:35,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926890216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:34:35,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:34:35,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:34:35,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254551948] [2021-11-07 19:34:35,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:34:35,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:34:35,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:34:35,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:34:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:35,886 INFO L87 Difference]: Start difference. First operand 69443 states and 89299 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 19:34:37,925 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:34:39,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:34:39,789 INFO L93 Difference]: Finished difference Result 153686 states and 197644 transitions. [2021-11-07 19:34:39,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:34:39,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2021-11-07 19:34:39,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:34:39,995 INFO L225 Difference]: With dead ends: 153686 [2021-11-07 19:34:39,996 INFO L226 Difference]: Without dead ends: 91817 [2021-11-07 19:34:40,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:40,103 INFO L933 BasicCegarLoop]: 29908 mSDtfsCounter, 9578 mSDsluCounter, 20257 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2162.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9578 SdHoareTripleChecker+Valid, 50165 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.72ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2351.92ms IncrementalHoareTripleChecker+Time [2021-11-07 19:34:40,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9578 Valid, 50165 Invalid, 86 Unknown, 0 Unchecked, 33.72ms Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 1 Unknown, 0 Unchecked, 2351.92ms Time] [2021-11-07 19:34:40,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91817 states. [2021-11-07 19:34:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91817 to 91813. [2021-11-07 19:34:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91813 states, 91671 states have (on average 1.2844301905728093) internal successors, (117745), 91671 states have internal predecessors, (117745), 123 states have call successors, (123), 18 states have call predecessors, (123), 18 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2021-11-07 19:34:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91813 states to 91813 states and 117991 transitions. [2021-11-07 19:34:42,153 INFO L78 Accepts]: Start accepts. Automaton has 91813 states and 117991 transitions. Word has length 121 [2021-11-07 19:34:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:34:42,153 INFO L470 AbstractCegarLoop]: Abstraction has 91813 states and 117991 transitions. [2021-11-07 19:34:42,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 19:34:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 91813 states and 117991 transitions. [2021-11-07 19:34:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-07 19:34:42,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:34:42,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:42,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 19:34:42,195 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)] === [2021-11-07 19:34:42,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:34:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1435507654, now seen corresponding path program 1 times [2021-11-07 19:34:42,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:34:42,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223557282] [2021-11-07 19:34:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:34:42,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:34:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:34:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 19:34:42,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:34:42,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223557282] [2021-11-07 19:34:42,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223557282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:34:42,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:34:42,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 19:34:42,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857601226] [2021-11-07 19:34:42,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:34:42,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 19:34:42,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:34:42,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 19:34:42,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:42,346 INFO L87 Difference]: Start difference. First operand 91813 states and 117991 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 19:34:44,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 19:34:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 19:34:46,613 INFO L93 Difference]: Finished difference Result 198414 states and 255004 transitions. [2021-11-07 19:34:46,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 19:34:46,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 160 [2021-11-07 19:34:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 19:34:46,843 INFO L225 Difference]: With dead ends: 198414 [2021-11-07 19:34:46,843 INFO L226 Difference]: Without dead ends: 106738 [2021-11-07 19:34:46,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 19:34:46,960 INFO L933 BasicCegarLoop]: 29909 mSDtfsCounter, 9577 mSDsluCounter, 20270 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2106.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9577 SdHoareTripleChecker+Valid, 50179 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.53ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2286.07ms IncrementalHoareTripleChecker+Time [2021-11-07 19:34:46,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9577 Valid, 50179 Invalid, 79 Unknown, 0 Unchecked, 32.53ms Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 2286.07ms Time] [2021-11-07 19:34:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106738 states. [2021-11-07 19:34:48,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106738 to 106734. [2021-11-07 19:34:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106734 states, 106570 states have (on average 1.2840761940508585) internal successors, (136844), 106570 states have internal predecessors, (136844), 141 states have call successors, (141), 22 states have call predecessors, (141), 22 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2021-11-07 19:34:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106734 states to 106734 states and 137126 transitions. [2021-11-07 19:34:49,320 INFO L78 Accepts]: Start accepts. Automaton has 106734 states and 137126 transitions. Word has length 160 [2021-11-07 19:34:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 19:34:49,320 INFO L470 AbstractCegarLoop]: Abstraction has 106734 states and 137126 transitions. [2021-11-07 19:34:49,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 19:34:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 106734 states and 137126 transitions. [2021-11-07 19:34:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-07 19:34:49,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 19:34:49,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:49,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 19:34:49,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 19:34:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 19:34:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1014092476, now seen corresponding path program 1 times [2021-11-07 19:34:49,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 19:34:49,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698660441] [2021-11-07 19:34:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 19:34:49,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 19:34:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 19:34:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 19:34:49,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 19:34:49,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698660441] [2021-11-07 19:34:49,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698660441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 19:34:49,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 19:34:49,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 19:34:49,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352641460] [2021-11-07 19:34:49,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 19:34:49,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 19:34:49,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 19:34:49,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 19:34:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 19:34:49,871 INFO L87 Difference]: Start difference. First operand 106734 states and 137126 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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)