./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.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 b087d00fa9bd90976fef9b627e09b5ad5b9a94f81c1bccd132a9fa7492421f28 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 20:04:02,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 20:04:02,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 20:04:02,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 20:04:02,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 20:04:02,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 20:04:02,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 20:04:02,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 20:04:02,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 20:04:02,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 20:04:02,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 20:04:02,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 20:04:02,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 20:04:02,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 20:04:02,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 20:04:02,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 20:04:02,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 20:04:02,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 20:04:02,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 20:04:02,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 20:04:02,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 20:04:02,802 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 20:04:02,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 20:04:02,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 20:04:02,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 20:04:02,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 20:04:02,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 20:04:02,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 20:04:02,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 20:04:02,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 20:04:02,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 20:04:02,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 20:04:02,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 20:04:02,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 20:04:02,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 20:04:02,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 20:04:02,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 20:04:02,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 20:04:02,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 20:04:02,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 20:04:02,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 20:04:02,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 20:04:02,848 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 20:04:02,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 20:04:02,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 20:04:02,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 20:04:02,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 20:04:02,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 20:04:02,852 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 20:04:02,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 20:04:02,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 20:04:02,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 20:04:02,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 20:04:02,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 20:04:02,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 20:04:02,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 20:04:02,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 20:04:02,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 20:04:02,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 20:04:02,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 20:04:02,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 20:04:02,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:04:02,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 20:04:02,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 20:04:02,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 20:04:02,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 20:04:02,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 20:04:02,855 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 20:04:02,855 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 20:04:02,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 20:04:02,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 20:04:02,856 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b087d00fa9bd90976fef9b627e09b5ad5b9a94f81c1bccd132a9fa7492421f28 [2021-11-05 20:04:03,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 20:04:03,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 20:04:03,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 20:04:03,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 20:04:03,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 20:04:03,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-05 20:04:03,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25da070b9/018ffb5a8f274a61b087e6568172a0b2/FLAG5f73cf6ef [2021-11-05 20:04:03,814 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 20:04:03,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-05 20:04:03,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25da070b9/018ffb5a8f274a61b087e6568172a0b2/FLAG5f73cf6ef [2021-11-05 20:04:03,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25da070b9/018ffb5a8f274a61b087e6568172a0b2 [2021-11-05 20:04:03,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 20:04:03,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 20:04:03,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 20:04:03,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 20:04:03,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 20:04:03,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:04:03" (1/1) ... [2021-11-05 20:04:03,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59bceb8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:03, skipping insertion in model container [2021-11-05 20:04:03,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:04:03" (1/1) ... [2021-11-05 20:04:03,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 20:04:04,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 20:04:05,874 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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357318,357331] [2021-11-05 20:04:05,876 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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357463,357476] [2021-11-05 20:04:05,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:04:05,937 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 20:04:06,166 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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357318,357331] [2021-11-05 20:04:06,167 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-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357463,357476] [2021-11-05 20:04:06,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:04:06,295 INFO L208 MainTranslator]: Completed translation [2021-11-05 20:04:06,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06 WrapperNode [2021-11-05 20:04:06,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 20:04:06,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 20:04:06,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 20:04:06,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 20:04:06,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:06,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:07,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 20:04:07,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 20:04:07,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 20:04:07,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 20:04:07,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:07,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:07,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:07,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:07,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:07,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:08,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:08,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 20:04:08,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 20:04:08,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 20:04:08,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 20:04:08,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (1/1) ... [2021-11-05 20:04:08,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:04:08,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:04:08,181 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) [2021-11-05 20:04:08,235 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 [2021-11-05 20:04:08,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 20:04:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 20:04:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 20:04:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 20:04:08,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 20:04:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 20:04:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 20:04:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 20:04:08,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 20:04:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 20:04:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 20:04:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 20:04:08,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 20:04:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 20:04:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_req_queue_run [2021-11-05 20:04:08,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_req_queue_run [2021-11-05 20:04:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_ctx_complete [2021-11-05 20:04:08,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_ctx_complete [2021-11-05 20:04:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 20:04:08,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:04:27,781 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 20:04:27,781 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:04:27,782 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-05 20:04:27,783 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:04:27,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:04:27,816 INFO L299 CfgBuilder]: Removed 6676 assume(true) statements. [2021-11-05 20:04:27,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:04:27 BoogieIcfgContainer [2021-11-05 20:04:27,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:04:27,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:04:27,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:04:27,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:04:27,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:04:03" (1/3) ... [2021-11-05 20:04:27,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20636005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:04:27, skipping insertion in model container [2021-11-05 20:04:27,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:04:06" (2/3) ... [2021-11-05 20:04:27,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20636005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:04:27, skipping insertion in model container [2021-11-05 20:04:27,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:04:27" (3/3) ... [2021-11-05 20:04:27,830 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-05 20:04:27,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:04:27,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 79 error locations. [2021-11-05 20:04:27,882 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:04:27,886 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 [2021-11-05 20:04:27,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 79 error locations. [2021-11-05 20:04:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 7550 states, 7438 states have (on average 1.4598010217800483) internal successors, (10858), 7542 states have internal predecessors, (10858), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-05 20:04:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 20:04:27,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:04:27,978 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] [2021-11-05 20:04:27,979 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:04:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:04:27,989 INFO L85 PathProgramCache]: Analyzing trace with hash -756030138, now seen corresponding path program 1 times [2021-11-05 20:04:27,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:04:27,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643468463] [2021-11-05 20:04:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:04:27,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:04:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:04:28,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:04:28,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:04:28,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643468463] [2021-11-05 20:04:28,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643468463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:04:28,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:04:28,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:04:28,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028806117] [2021-11-05 20:04:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:04:28,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:04:28,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:04:28,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:04:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:28,609 INFO L87 Difference]: Start difference. First operand has 7550 states, 7438 states have (on average 1.4598010217800483) internal successors, (10858), 7542 states have internal predecessors, (10858), 31 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-05 20:04:30,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:04:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:04:31,240 INFO L93 Difference]: Finished difference Result 19205 states and 27817 transitions. [2021-11-05 20:04:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:04:31,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-05 20:04:31,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:04:31,298 INFO L225 Difference]: With dead ends: 19205 [2021-11-05 20:04:31,299 INFO L226 Difference]: Without dead ends: 11109 [2021-11-05 20:04:31,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:31,336 INFO L933 BasicCegarLoop]: 10400 mSDtfsCounter, 6049 mSDsluCounter, 10320 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2116.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6049 SdHoareTripleChecker+Valid, 20720 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.62ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2275.62ms IncrementalHoareTripleChecker+Time [2021-11-05 20:04:31,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6049 Valid, 20720 Invalid, 77 Unknown, 0 Unchecked, 34.62ms Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2275.62ms Time] [2021-11-05 20:04:31,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11109 states. [2021-11-05 20:04:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11109 to 11013. [2021-11-05 20:04:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11013 states, 10879 states have (on average 1.3788031988234213) internal successors, (15000), 10998 states have internal predecessors, (15000), 51 states have call successors, (51), 4 states have call predecessors, (51), 4 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-11-05 20:04:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 15102 transitions. [2021-11-05 20:04:31,647 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 15102 transitions. Word has length 71 [2021-11-05 20:04:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:04:31,648 INFO L470 AbstractCegarLoop]: Abstraction has 11013 states and 15102 transitions. [2021-11-05 20:04:31,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-11-05 20:04:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 15102 transitions. [2021-11-05 20:04:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-05 20:04:31,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:04:31,653 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] [2021-11-05 20:04:31,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:04:31,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:04:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:04:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash 325300629, now seen corresponding path program 1 times [2021-11-05 20:04:31,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:04:31,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220472732] [2021-11-05 20:04:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:04:31,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:04:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:04:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:04:31,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:04:31,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220472732] [2021-11-05 20:04:31,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220472732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:04:31,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:04:31,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:04:31,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153630031] [2021-11-05 20:04:31,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:04:31,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:04:31,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:04:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:04:31,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:31,866 INFO L87 Difference]: Start difference. First operand 11013 states and 15102 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:04:33,913 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 [] [2021-11-05 20:04:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:04:34,409 INFO L93 Difference]: Finished difference Result 26035 states and 35693 transitions. [2021-11-05 20:04:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:04:34,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-05 20:04:34,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:04:34,481 INFO L225 Difference]: With dead ends: 26035 [2021-11-05 20:04:34,482 INFO L226 Difference]: Without dead ends: 15146 [2021-11-05 20:04:34,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:34,514 INFO L933 BasicCegarLoop]: 9770 mSDtfsCounter, 4720 mSDsluCounter, 9530 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2090.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 19300 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.07ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2258.93ms IncrementalHoareTripleChecker+Time [2021-11-05 20:04:34,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4720 Valid, 19300 Invalid, 66 Unknown, 0 Unchecked, 23.07ms Time], IncrementalHoareTripleChecker [17 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2258.93ms Time] [2021-11-05 20:04:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15146 states. [2021-11-05 20:04:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15146 to 15058. [2021-11-05 20:04:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15058 states, 14903 states have (on average 1.3769039790646178) internal successors, (20520), 15035 states have internal predecessors, (20520), 68 states have call successors, (68), 8 states have call predecessors, (68), 8 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-11-05 20:04:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15058 states to 15058 states and 20656 transitions. [2021-11-05 20:04:34,845 INFO L78 Accepts]: Start accepts. Automaton has 15058 states and 20656 transitions. Word has length 74 [2021-11-05 20:04:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:04:34,851 INFO L470 AbstractCegarLoop]: Abstraction has 15058 states and 20656 transitions. [2021-11-05 20:04:34,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:04:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 15058 states and 20656 transitions. [2021-11-05 20:04:34,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-05 20:04:34,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:04:34,854 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] [2021-11-05 20:04:34,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:04:34,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:04:34,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:04:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1282968837, now seen corresponding path program 1 times [2021-11-05 20:04:34,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:04:34,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891193687] [2021-11-05 20:04:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:04:34,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:04:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:04:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:04:35,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:04:35,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891193687] [2021-11-05 20:04:35,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891193687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:04:35,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:04:35,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:04:35,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998652742] [2021-11-05 20:04:35,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:04:35,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:04:35,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:04:35,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:04:35,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:35,042 INFO L87 Difference]: Start difference. First operand 15058 states and 20656 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-05 20:04:37,082 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 [] [2021-11-05 20:04:37,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:04:37,884 INFO L93 Difference]: Finished difference Result 34675 states and 47533 transitions. [2021-11-05 20:04:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:04:37,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-11-05 20:04:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:04:37,929 INFO L225 Difference]: With dead ends: 34675 [2021-11-05 20:04:37,929 INFO L226 Difference]: Without dead ends: 19741 [2021-11-05 20:04:37,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.78ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:37,960 INFO L933 BasicCegarLoop]: 9601 mSDtfsCounter, 5544 mSDsluCounter, 9523 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2066.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5544 SdHoareTripleChecker+Valid, 19124 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.70ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2219.03ms IncrementalHoareTripleChecker+Time [2021-11-05 20:04:37,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5544 Valid, 19124 Invalid, 38 Unknown, 0 Unchecked, 21.70ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 2219.03ms Time] [2021-11-05 20:04:37,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19741 states. [2021-11-05 20:04:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19741 to 19651. [2021-11-05 20:04:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19651 states, 19469 states have (on average 1.375365966408136) internal successors, (26777), 19617 states have internal predecessors, (26777), 91 states have call successors, (91), 12 states have call predecessors, (91), 12 states have return successors, (91), 91 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-05 20:04:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19651 states to 19651 states and 26959 transitions. [2021-11-05 20:04:38,407 INFO L78 Accepts]: Start accepts. Automaton has 19651 states and 26959 transitions. Word has length 85 [2021-11-05 20:04:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:04:38,408 INFO L470 AbstractCegarLoop]: Abstraction has 19651 states and 26959 transitions. [2021-11-05 20:04:38,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-11-05 20:04:38,408 INFO L276 IsEmpty]: Start isEmpty. Operand 19651 states and 26959 transitions. [2021-11-05 20:04:38,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-05 20:04:38,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:04:38,411 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 20:04:38,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:04:38,411 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:04:38,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:04:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1672858622, now seen corresponding path program 1 times [2021-11-05 20:04:38,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:04:38,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255133263] [2021-11-05 20:04:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:04:38,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:04:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:04:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:04:38,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:04:38,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255133263] [2021-11-05 20:04:38,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255133263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:04:38,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:04:38,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:04:38,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920750924] [2021-11-05 20:04:38,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:04:38,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:04:38,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:04:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:04:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:38,627 INFO L87 Difference]: Start difference. First operand 19651 states and 26959 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-05 20:04:40,669 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 [] [2021-11-05 20:04:41,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:04:41,245 INFO L93 Difference]: Finished difference Result 50124 states and 68792 transitions. [2021-11-05 20:04:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:04:41,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-11-05 20:04:41,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:04:41,327 INFO L225 Difference]: With dead ends: 50124 [2021-11-05 20:04:41,327 INFO L226 Difference]: Without dead ends: 30597 [2021-11-05 20:04:41,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:41,375 INFO L933 BasicCegarLoop]: 14392 mSDtfsCounter, 9411 mSDsluCounter, 9559 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2055.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9411 SdHoareTripleChecker+Valid, 23951 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.93ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2222.12ms IncrementalHoareTripleChecker+Time [2021-11-05 20:04:41,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9411 Valid, 23951 Invalid, 19 Unknown, 0 Unchecked, 19.93ms Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 1 Unknown, 0 Unchecked, 2222.12ms Time] [2021-11-05 20:04:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30597 states. [2021-11-05 20:04:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30597 to 30423. [2021-11-05 20:04:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30423 states, 30187 states have (on average 1.377712260244476) internal successors, (41589), 30374 states have internal predecessors, (41589), 139 states have call successors, (139), 18 states have call predecessors, (139), 18 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2021-11-05 20:04:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 41867 transitions. [2021-11-05 20:04:42,442 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 41867 transitions. Word has length 89 [2021-11-05 20:04:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:04:42,442 INFO L470 AbstractCegarLoop]: Abstraction has 30423 states and 41867 transitions. [2021-11-05 20:04:42,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2021-11-05 20:04:42,443 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 41867 transitions. [2021-11-05 20:04:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-05 20:04:42,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:04:42,448 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] [2021-11-05 20:04:42,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:04:42,449 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:04:42,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:04:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1607912092, now seen corresponding path program 1 times [2021-11-05 20:04:42,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:04:42,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976396807] [2021-11-05 20:04:42,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:04:42,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:04:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:04:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:04:42,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:04:42,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976396807] [2021-11-05 20:04:42,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976396807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:04:42,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:04:42,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:04:42,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767705683] [2021-11-05 20:04:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:04:42,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:04:42,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:04:42,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:04:42,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:42,631 INFO L87 Difference]: Start difference. First operand 30423 states and 41867 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-05 20:04:44,677 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 [] [2021-11-05 20:04:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:04:45,723 INFO L93 Difference]: Finished difference Result 86297 states and 119048 transitions. [2021-11-05 20:04:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:04:45,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2021-11-05 20:04:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:04:46,033 INFO L225 Difference]: With dead ends: 86297 [2021-11-05 20:04:46,034 INFO L226 Difference]: Without dead ends: 55998 [2021-11-05 20:04:46,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:46,093 INFO L933 BasicCegarLoop]: 9595 mSDtfsCounter, 8881 mSDsluCounter, 9523 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2095.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8881 SdHoareTripleChecker+Valid, 19118 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.97ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2270.76ms IncrementalHoareTripleChecker+Time [2021-11-05 20:04:46,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8881 Valid, 19118 Invalid, 59 Unknown, 0 Unchecked, 18.97ms Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 1 Unknown, 0 Unchecked, 2270.76ms Time] [2021-11-05 20:04:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55998 states. [2021-11-05 20:04:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55998 to 55798. [2021-11-05 20:04:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55798 states, 55431 states have (on average 1.3824574696469485) internal successors, (76631), 55717 states have internal predecessors, (76631), 260 states have call successors, (260), 28 states have call predecessors, (260), 28 states have return successors, (260), 260 states have call predecessors, (260), 260 states have call successors, (260) [2021-11-05 20:04:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55798 states to 55798 states and 77151 transitions. [2021-11-05 20:04:47,321 INFO L78 Accepts]: Start accepts. Automaton has 55798 states and 77151 transitions. Word has length 106 [2021-11-05 20:04:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:04:47,321 INFO L470 AbstractCegarLoop]: Abstraction has 55798 states and 77151 transitions. [2021-11-05 20:04:47,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2021-11-05 20:04:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand 55798 states and 77151 transitions. [2021-11-05 20:04:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-05 20:04:47,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:04:47,324 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 20:04:47,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:04:47,324 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:04:47,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:04:47,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1160644210, now seen corresponding path program 1 times [2021-11-05 20:04:47,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:04:47,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103244256] [2021-11-05 20:04:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:04:47,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:04:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:04:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:04:47,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:04:47,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103244256] [2021-11-05 20:04:47,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103244256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:04:47,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:04:47,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:04:47,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259825023] [2021-11-05 20:04:47,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:04:47,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:04:47,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:04:47,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:04:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:47,494 INFO L87 Difference]: Start difference. First operand 55798 states and 77151 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-05 20:04:49,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:04:51,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:04:51,261 INFO L93 Difference]: Finished difference Result 166454 states and 230401 transitions. [2021-11-05 20:04:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:04:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2021-11-05 20:04:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:04:51,690 INFO L225 Difference]: With dead ends: 166454 [2021-11-05 20:04:51,690 INFO L226 Difference]: Without dead ends: 110834 [2021-11-05 20:04:51,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:51,772 INFO L933 BasicCegarLoop]: 14136 mSDtfsCounter, 9372 mSDsluCounter, 9543 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2181.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9372 SdHoareTripleChecker+Valid, 23679 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.88ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2354.16ms IncrementalHoareTripleChecker+Time [2021-11-05 20:04:51,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9372 Valid, 23679 Invalid, 35 Unknown, 0 Unchecked, 17.88ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2354.16ms Time] [2021-11-05 20:04:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110834 states. [2021-11-05 20:04:53,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110834 to 110676. [2021-11-05 20:04:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110676 states, 110021 states have (on average 1.3838539915107115) internal successors, (152253), 110515 states have internal predecessors, (152253), 520 states have call successors, (520), 56 states have call predecessors, (520), 56 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2021-11-05 20:04:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110676 states to 110676 states and 153293 transitions. [2021-11-05 20:04:54,362 INFO L78 Accepts]: Start accepts. Automaton has 110676 states and 153293 transitions. Word has length 117 [2021-11-05 20:04:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:04:54,362 INFO L470 AbstractCegarLoop]: Abstraction has 110676 states and 153293 transitions. [2021-11-05 20:04:54,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-05 20:04:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand 110676 states and 153293 transitions. [2021-11-05 20:04:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-05 20:04:54,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:04:54,367 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 20:04:54,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 20:04:54,368 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:04:54,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:04:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1820175732, now seen corresponding path program 1 times [2021-11-05 20:04:54,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:04:54,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570420564] [2021-11-05 20:04:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:04:54,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:04:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:04:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:04:54,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:04:54,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570420564] [2021-11-05 20:04:54,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570420564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:04:54,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:04:54,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:04:54,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233168335] [2021-11-05 20:04:54,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:04:54,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:04:54,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:04:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:04:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:04:54,783 INFO L87 Difference]: Start difference. First operand 110676 states and 153293 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-05 20:04:56,824 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 [] [2021-11-05 20:04:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:04:59,761 INFO L93 Difference]: Finished difference Result 276226 states and 382701 transitions. [2021-11-05 20:04:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:04:59,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2021-11-05 20:04:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:05:00,337 INFO L225 Difference]: With dead ends: 276226 [2021-11-05 20:05:00,337 INFO L226 Difference]: Without dead ends: 165481 [2021-11-05 20:05:00,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:05:00,706 INFO L933 BasicCegarLoop]: 18942 mSDtfsCounter, 9368 mSDsluCounter, 9547 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2079.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9368 SdHoareTripleChecker+Valid, 28489 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.14ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2248.65ms IncrementalHoareTripleChecker+Time [2021-11-05 20:05:00,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9368 Valid, 28489 Invalid, 36 Unknown, 0 Unchecked, 22.14ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2248.65ms Time] [2021-11-05 20:05:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165481 states. [2021-11-05 20:05:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165481 to 165323. [2021-11-05 20:05:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165323 states, 164380 states have (on average 1.3846088331913857) internal successors, (227602), 165082 states have internal predecessors, (227602), 780 states have call successors, (780), 84 states have call predecessors, (780), 84 states have return successors, (780), 780 states have call predecessors, (780), 780 states have call successors, (780) [2021-11-05 20:05:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165323 states to 165323 states and 229162 transitions. [2021-11-05 20:05:04,508 INFO L78 Accepts]: Start accepts. Automaton has 165323 states and 229162 transitions. Word has length 117 [2021-11-05 20:05:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:05:04,508 INFO L470 AbstractCegarLoop]: Abstraction has 165323 states and 229162 transitions. [2021-11-05 20:05:04,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2021-11-05 20:05:04,509 INFO L276 IsEmpty]: Start isEmpty. Operand 165323 states and 229162 transitions. [2021-11-05 20:05:04,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-05 20:05:04,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:05:04,512 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-05 20:05:04,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 20:05:04,513 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:05:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:05:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash 530310338, now seen corresponding path program 1 times [2021-11-05 20:05:04,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:05:04,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217552290] [2021-11-05 20:05:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:05:04,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:05:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:05:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 20:05:04,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:05:04,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217552290] [2021-11-05 20:05:04,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217552290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:05:04,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:05:04,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:05:04,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882650693] [2021-11-05 20:05:04,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:05:04,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:05:04,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:05:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:05:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:05:04,663 INFO L87 Difference]: Start difference. First operand 165323 states and 229162 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-05 20:05:06,703 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 [] [2021-11-05 20:05:10,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:05:10,855 INFO L93 Difference]: Finished difference Result 373597 states and 517691 transitions. [2021-11-05 20:05:10,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:05:10,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 124 [2021-11-05 20:05:10,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:05:11,444 INFO L225 Difference]: With dead ends: 373597 [2021-11-05 20:05:11,445 INFO L226 Difference]: Without dead ends: 208452 [2021-11-05 20:05:11,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:05:11,664 INFO L933 BasicCegarLoop]: 14176 mSDtfsCounter, 5905 mSDsluCounter, 8343 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2108.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5905 SdHoareTripleChecker+Valid, 22519 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.87ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2318.14ms IncrementalHoareTripleChecker+Time [2021-11-05 20:05:11,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5905 Valid, 22519 Invalid, 64 Unknown, 0 Unchecked, 15.87ms Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 1 Unknown, 0 Unchecked, 2318.14ms Time] [2021-11-05 20:05:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208452 states. [2021-11-05 20:05:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208452 to 208307. [2021-11-05 20:05:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208307 states, 207124 states have (on average 1.3828286437110138) internal successors, (286417), 207970 states have internal predecessors, (286417), 972 states have call successors, (972), 132 states have call predecessors, (972), 132 states have return successors, (972), 972 states have call predecessors, (972), 972 states have call successors, (972) [2021-11-05 20:05:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208307 states to 208307 states and 288361 transitions. [2021-11-05 20:05:16,212 INFO L78 Accepts]: Start accepts. Automaton has 208307 states and 288361 transitions. Word has length 124 [2021-11-05 20:05:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:05:16,213 INFO L470 AbstractCegarLoop]: Abstraction has 208307 states and 288361 transitions. [2021-11-05 20:05:16,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-05 20:05:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 208307 states and 288361 transitions. [2021-11-05 20:05:16,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-05 20:05:16,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:05:16,217 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-05 20:05:16,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 20:05:16,217 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ezusb_req_queue_runErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 76 more)] === [2021-11-05 20:05:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:05:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash -370190605, now seen corresponding path program 1 times [2021-11-05 20:05:16,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:05:16,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233005120] [2021-11-05 20:05:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:05:16,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:05:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:05:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-05 20:05:16,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:05:16,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233005120] [2021-11-05 20:05:16,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233005120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:05:16,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:05:16,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:05:16,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430467662] [2021-11-05 20:05:16,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:05:16,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:05:16,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:05:16,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:05:16,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:05:16,357 INFO L87 Difference]: Start difference. First operand 208307 states and 288361 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-05 20:05:18,401 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 [] [2021-11-05 20:05:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:05:23,326 INFO L93 Difference]: Finished difference Result 485604 states and 672257 transitions. [2021-11-05 20:05:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:05:23,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 133 [2021-11-05 20:05:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:05:24,174 INFO L225 Difference]: With dead ends: 485604 [2021-11-05 20:05:24,174 INFO L226 Difference]: Without dead ends: 277300 [2021-11-05 20:05:24,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:05:24,738 INFO L933 BasicCegarLoop]: 18942 mSDtfsCounter, 9366 mSDsluCounter, 9547 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2055.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9366 SdHoareTripleChecker+Valid, 28489 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2227.34ms IncrementalHoareTripleChecker+Time [2021-11-05 20:05:24,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9366 Valid, 28489 Invalid, 25 Unknown, 0 Unchecked, 23.74ms Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2227.34ms Time] [2021-11-05 20:05:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277300 states.