/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:10:46,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:10:46,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:10:46,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:10:46,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:10:46,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:10:46,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:10:46,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:10:46,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:10:46,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:10:46,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:10:46,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:10:46,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:10:46,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:10:46,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:10:46,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:10:46,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:10:46,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:10:46,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:10:46,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:10:46,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:10:46,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:10:46,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:10:46,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:10:46,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:10:46,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:10:46,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:10:46,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:10:46,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:10:46,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:10:46,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:10:46,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:10:46,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:10:46,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:10:46,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:10:46,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:10:46,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:10:46,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:10:46,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:10:46,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:10:46,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:10:46,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:10:46,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:10:46,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:10:46,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:10:46,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:10:46,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:10:46,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:10:46,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:10:46,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:10:46,476 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:10:46,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:10:46,476 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:10:46,477 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:10:46,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:10:46,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:10:46,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:10:46,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:10:46,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:10:46,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:10:46,478 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:10:46,478 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:10:46,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:10:46,479 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:10:46,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:10:46,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:10:46,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:10:46,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:10:46,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:10:46,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:10:46,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:10:46,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:10:46,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:10:46,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:10:46,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:10:46,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:10:46,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:10:46,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:10:46,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:10:46,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:10:46,985 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:10:46,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-10-15 21:10:47,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416532d48/fd81e4a44d3a41969affb51ec88da706/FLAG28533b270 [2022-10-15 21:10:48,325 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:10:48,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-10-15 21:10:48,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416532d48/fd81e4a44d3a41969affb51ec88da706/FLAG28533b270 [2022-10-15 21:10:48,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416532d48/fd81e4a44d3a41969affb51ec88da706 [2022-10-15 21:10:48,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:10:48,728 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:10:48,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:10:48,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:10:48,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:10:48,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:10:48" (1/1) ... [2022-10-15 21:10:48,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114d4cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:48, skipping insertion in model container [2022-10-15 21:10:48,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:10:48" (1/1) ... [2022-10-15 21:10:48,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:10:48,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:10:50,674 WARN L230 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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2022-10-15 21:10:50,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:10:50,771 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:10:51,224 WARN L230 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-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2022-10-15 21:10:51,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:10:51,530 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:10:51,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51 WrapperNode [2022-10-15 21:10:51,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:10:51,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:10:51,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:10:51,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:10:51,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,784 INFO L138 Inliner]: procedures = 133, calls = 733, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1408 [2022-10-15 21:10:51,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:10:51,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:10:51,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:10:51,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:10:51,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,919 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:10:51,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:10:51,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:10:51,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:10:51,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (1/1) ... [2022-10-15 21:10:51,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:10:52,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:10:52,021 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) [2022-10-15 21:10:52,037 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 [2022-10-15 21:10:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-15 21:10:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-15 21:10:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2022-10-15 21:10:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2022-10-15 21:10:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:10:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-15 21:10:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-15 21:10:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:10:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:10:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:10:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-10-15 21:10:52,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-10-15 21:10:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2022-10-15 21:10:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2022-10-15 21:10:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:10:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:10:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:10:52,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:10:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2022-10-15 21:10:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2022-10-15 21:10:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-10-15 21:10:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-10-15 21:10:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:10:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:10:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-10-15 21:10:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-10-15 21:10:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:10:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-10-15 21:10:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-10-15 21:10:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-10-15 21:10:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-10-15 21:10:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-15 21:10:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-15 21:10:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-15 21:10:52,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-15 21:10:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2022-10-15 21:10:52,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2022-10-15 21:10:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:10:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-10-15 21:10:52,101 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-10-15 21:10:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:10:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-10-15 21:10:52,101 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-10-15 21:10:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:10:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:10:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2022-10-15 21:10:52,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2022-10-15 21:10:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-15 21:10:52,102 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-15 21:10:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-10-15 21:10:52,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-10-15 21:10:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:10:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-15 21:10:52,104 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-15 21:10:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-15 21:10:52,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-15 21:10:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-10-15 21:10:52,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-10-15 21:10:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-10-15 21:10:52,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-10-15 21:10:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:10:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:10:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-15 21:10:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-15 21:10:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-10-15 21:10:52,107 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-10-15 21:10:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-15 21:10:52,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-15 21:10:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-10-15 21:10:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-10-15 21:10:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-15 21:10:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-15 21:10:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-15 21:10:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-15 21:10:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-10-15 21:10:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-10-15 21:10:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-10-15 21:10:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-10-15 21:10:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:10:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-10-15 21:10:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-10-15 21:10:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-15 21:10:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-15 21:10:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:10:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:10:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:10:52,709 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:10:52,716 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:10:53,165 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-10-15 21:10:53,428 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:10:56,092 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-10-15 21:10:56,092 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-10-15 21:10:56,159 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:10:56,182 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:10:56,182 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-10-15 21:10:56,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:10:56 BoogieIcfgContainer [2022-10-15 21:10:56,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:10:56,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:10:56,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:10:56,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:10:56,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:10:48" (1/3) ... [2022-10-15 21:10:56,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d522fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:10:56, skipping insertion in model container [2022-10-15 21:10:56,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:51" (2/3) ... [2022-10-15 21:10:56,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d522fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:10:56, skipping insertion in model container [2022-10-15 21:10:56,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:10:56" (3/3) ... [2022-10-15 21:10:56,202 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-10-15 21:10:56,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:10:56,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2022-10-15 21:10:56,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:10:56,341 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a8d8d01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:10:56,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-10-15 21:10:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 513 states, 344 states have (on average 1.433139534883721) internal successors, (493), 398 states have internal predecessors, (493), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-10-15 21:10:56,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 21:10:56,361 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:10:56,362 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:10:56,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ems_usb_command_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:10:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:10:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash 428098850, now seen corresponding path program 1 times [2022-10-15 21:10:56,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:10:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587199611] [2022-10-15 21:10:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:10:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:10:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:10:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:57,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:10:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:10:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:10:57,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587199611] [2022-10-15 21:10:57,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587199611] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:10:57,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:10:57,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:10:57,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877773920] [2022-10-15 21:10:57,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:10:57,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:10:57,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:10:57,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:10:57,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:10:57,715 INFO L87 Difference]: Start difference. First operand has 513 states, 344 states have (on average 1.433139534883721) internal successors, (493), 398 states have internal predecessors, (493), 91 states have call successors, (91), 35 states have call predecessors, (91), 34 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:10:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:10:57,934 INFO L93 Difference]: Finished difference Result 835 states and 1113 transitions. [2022-10-15 21:10:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:10:57,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-10-15 21:10:57,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:10:57,967 INFO L225 Difference]: With dead ends: 835 [2022-10-15 21:10:57,968 INFO L226 Difference]: Without dead ends: 301 [2022-10-15 21:10:57,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:10:57,996 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 9 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:10:58,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1534 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:10:58,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-10-15 21:10:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-10-15 21:10:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 212 states have (on average 1.2877358490566038) internal successors, (273), 236 states have internal predecessors, (273), 45 states have call successors, (45), 24 states have call predecessors, (45), 22 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-10-15 21:10:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 359 transitions. [2022-10-15 21:10:58,093 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 359 transitions. Word has length 28 [2022-10-15 21:10:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:10:58,094 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 359 transitions. [2022-10-15 21:10:58,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:10:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 359 transitions. [2022-10-15 21:10:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-15 21:10:58,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:10:58,098 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:10:58,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:10:58,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:10:58,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:10:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1051975971, now seen corresponding path program 1 times [2022-10-15 21:10:58,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:10:58,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075928413] [2022-10-15 21:10:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:10:58,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:10:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:58,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:10:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:10:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:10:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:10:58,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075928413] [2022-10-15 21:10:58,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075928413] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:10:58,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:10:58,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:10:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852314574] [2022-10-15 21:10:58,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:10:58,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:10:58,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:10:58,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:10:58,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:10:58,944 INFO L87 Difference]: Start difference. First operand 301 states and 359 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:10:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:10:59,063 INFO L93 Difference]: Finished difference Result 317 states and 377 transitions. [2022-10-15 21:10:59,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:10:59,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-10-15 21:10:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:10:59,069 INFO L225 Difference]: With dead ends: 317 [2022-10-15 21:10:59,069 INFO L226 Difference]: Without dead ends: 302 [2022-10-15 21:10:59,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:10:59,073 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:10:59,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 712 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:10:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-10-15 21:10:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2022-10-15 21:10:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 213 states have (on average 1.2863849765258215) internal successors, (274), 237 states have internal predecessors, (274), 45 states have call successors, (45), 24 states have call predecessors, (45), 22 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-10-15 21:10:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 360 transitions. [2022-10-15 21:10:59,134 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 360 transitions. Word has length 37 [2022-10-15 21:10:59,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:10:59,136 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 360 transitions. [2022-10-15 21:10:59,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:10:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 360 transitions. [2022-10-15 21:10:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-15 21:10:59,145 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:10:59,145 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:10:59,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:10:59,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:10:59,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:10:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1525614365, now seen corresponding path program 1 times [2022-10-15 21:10:59,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:10:59,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830755974] [2022-10-15 21:10:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:10:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:10:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:10:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:10:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:10:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 21:10:59,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:10:59,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830755974] [2022-10-15 21:10:59,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830755974] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:10:59,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:10:59,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:10:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175901781] [2022-10-15 21:10:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:10:59,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:10:59,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:10:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:10:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:10:59,951 INFO L87 Difference]: Start difference. First operand 302 states and 360 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:10:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:10:59,973 INFO L93 Difference]: Finished difference Result 315 states and 373 transitions. [2022-10-15 21:10:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:10:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2022-10-15 21:10:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:10:59,977 INFO L225 Difference]: With dead ends: 315 [2022-10-15 21:10:59,978 INFO L226 Difference]: Without dead ends: 303 [2022-10-15 21:10:59,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:10:59,980 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:10:59,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 714 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:10:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-10-15 21:10:59,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2022-10-15 21:10:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 214 states have (on average 1.2850467289719627) internal successors, (275), 238 states have internal predecessors, (275), 45 states have call successors, (45), 24 states have call predecessors, (45), 22 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-10-15 21:10:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 361 transitions. [2022-10-15 21:10:59,999 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 361 transitions. Word has length 38 [2022-10-15 21:11:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:00,000 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 361 transitions. [2022-10-15 21:11:00,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 361 transitions. [2022-10-15 21:11:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-15 21:11:00,002 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:00,002 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:11:00,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:11:00,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:00,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2096424612, now seen corresponding path program 1 times [2022-10-15 21:11:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:00,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383717086] [2022-10-15 21:11:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:00,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:00,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 21:11:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-15 21:11:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:11:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:00,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383717086] [2022-10-15 21:11:00,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383717086] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:00,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:11:00,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:11:00,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202096556] [2022-10-15 21:11:00,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:00,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:11:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:00,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:11:00,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:00,291 INFO L87 Difference]: Start difference. First operand 303 states and 361 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:11:00,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:00,860 INFO L93 Difference]: Finished difference Result 695 states and 858 transitions. [2022-10-15 21:11:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:11:00,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-10-15 21:11:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:00,867 INFO L225 Difference]: With dead ends: 695 [2022-10-15 21:11:00,867 INFO L226 Difference]: Without dead ends: 403 [2022-10-15 21:11:00,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:00,870 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 221 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:00,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 865 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 21:11:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-10-15 21:11:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 361. [2022-10-15 21:11:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 267 states have (on average 1.3146067415730338) internal successors, (351), 290 states have internal predecessors, (351), 52 states have call successors, (52), 24 states have call predecessors, (52), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-10-15 21:11:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 451 transitions. [2022-10-15 21:11:00,898 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 451 transitions. Word has length 36 [2022-10-15 21:11:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:00,898 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 451 transitions. [2022-10-15 21:11:00,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:11:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 451 transitions. [2022-10-15 21:11:00,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-15 21:11:00,900 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:00,900 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:11:00,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:11:00,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:00,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:00,902 INFO L85 PathProgramCache]: Analyzing trace with hash -31921385, now seen corresponding path program 1 times [2022-10-15 21:11:00,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:00,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866710295] [2022-10-15 21:11:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:00,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:01,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:01,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 21:11:01,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:01,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866710295] [2022-10-15 21:11:01,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866710295] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:01,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521808813] [2022-10-15 21:11:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:01,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:01,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:01,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:01,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:11:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:01,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 21:11:02,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:02,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 21:11:02,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:11:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 21:11:02,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521808813] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:02,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-15 21:11:02,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2022-10-15 21:11:02,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090461236] [2022-10-15 21:11:02,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:02,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:11:02,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:11:02,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:11:02,153 INFO L87 Difference]: Start difference. First operand 361 states and 451 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:02,293 INFO L93 Difference]: Finished difference Result 377 states and 468 transitions. [2022-10-15 21:11:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:11:02,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-10-15 21:11:02,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:02,297 INFO L225 Difference]: With dead ends: 377 [2022-10-15 21:11:02,297 INFO L226 Difference]: Without dead ends: 362 [2022-10-15 21:11:02,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:11:02,299 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 9 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:02,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 704 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:11:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-10-15 21:11:02,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-10-15 21:11:02,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 268 states have (on average 1.3134328358208955) internal successors, (352), 291 states have internal predecessors, (352), 52 states have call successors, (52), 24 states have call predecessors, (52), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-10-15 21:11:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 452 transitions. [2022-10-15 21:11:02,324 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 452 transitions. Word has length 39 [2022-10-15 21:11:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:02,325 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 452 transitions. [2022-10-15 21:11:02,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 452 transitions. [2022-10-15 21:11:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-15 21:11:02,327 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:02,327 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:11:02,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:02,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:02,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash -196648551, now seen corresponding path program 1 times [2022-10-15 21:11:02,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:02,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93841547] [2022-10-15 21:11:02,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:02,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:11:03,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:03,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93841547] [2022-10-15 21:11:03,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93841547] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33831276] [2022-10-15 21:11:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:03,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:03,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:03,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:03,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:11:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:03,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 21:11:03,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:11:03,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:11:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 21:11:03,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33831276] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:11:03,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:11:03,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-10-15 21:11:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380745331] [2022-10-15 21:11:03,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:11:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 21:11:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 21:11:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:11:03,852 INFO L87 Difference]: Start difference. First operand 362 states and 452 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:04,197 INFO L93 Difference]: Finished difference Result 377 states and 469 transitions. [2022-10-15 21:11:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:11:04,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2022-10-15 21:11:04,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:04,201 INFO L225 Difference]: With dead ends: 377 [2022-10-15 21:11:04,202 INFO L226 Difference]: Without dead ends: 365 [2022-10-15 21:11:04,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:11:04,208 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 0 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:04,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2113 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 21:11:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-10-15 21:11:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2022-10-15 21:11:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 271 states have (on average 1.3099630996309963) internal successors, (355), 294 states have internal predecessors, (355), 52 states have call successors, (52), 24 states have call predecessors, (52), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-10-15 21:11:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 455 transitions. [2022-10-15 21:11:04,245 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 455 transitions. Word has length 40 [2022-10-15 21:11:04,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:04,246 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 455 transitions. [2022-10-15 21:11:04,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:04,246 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 455 transitions. [2022-10-15 21:11:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-15 21:11:04,248 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:04,249 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:04,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:04,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 21:11:04,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:04,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:04,464 INFO L85 PathProgramCache]: Analyzing trace with hash 825628635, now seen corresponding path program 2 times [2022-10-15 21:11:04,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:04,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007259414] [2022-10-15 21:11:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:04,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:05,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 21:11:05,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:05,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007259414] [2022-10-15 21:11:05,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007259414] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:05,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804762747] [2022-10-15 21:11:05,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 21:11:05,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:05,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:05,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:05,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 21:11:06,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 21:11:06,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:11:06,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-15 21:11:06,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 21:11:06,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:11:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:11:06,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804762747] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:11:06,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:11:06,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 6] total 10 [2022-10-15 21:11:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206168723] [2022-10-15 21:11:06,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:11:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 21:11:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:06,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 21:11:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:11:06,899 INFO L87 Difference]: Start difference. First operand 365 states and 455 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:07,664 INFO L93 Difference]: Finished difference Result 388 states and 482 transitions. [2022-10-15 21:11:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:11:07,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-10-15 21:11:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:07,672 INFO L225 Difference]: With dead ends: 388 [2022-10-15 21:11:07,673 INFO L226 Difference]: Without dead ends: 368 [2022-10-15 21:11:07,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:07,679 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 11 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:07,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2098 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 21:11:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-10-15 21:11:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-10-15 21:11:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.3065693430656935) internal successors, (358), 297 states have internal predecessors, (358), 52 states have call successors, (52), 24 states have call predecessors, (52), 22 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-10-15 21:11:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 458 transitions. [2022-10-15 21:11:07,714 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 458 transitions. Word has length 43 [2022-10-15 21:11:07,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:07,716 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 458 transitions. [2022-10-15 21:11:07,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:07,717 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 458 transitions. [2022-10-15 21:11:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 21:11:07,718 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:07,718 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:11:07,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:07,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:07,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting unlink_all_urbsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:07,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash 499499711, now seen corresponding path program 1 times [2022-10-15 21:11:07,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:07,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926294155] [2022-10-15 21:11:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:07,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:11:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 21:11:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-15 21:11:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 21:11:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-15 21:11:08,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:08,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926294155] [2022-10-15 21:11:08,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926294155] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:08,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:11:08,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:11:08,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486871623] [2022-10-15 21:11:08,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:08,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:11:08,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:08,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:11:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:08,163 INFO L87 Difference]: Start difference. First operand 368 states and 458 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:11:10,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:10,483 INFO L93 Difference]: Finished difference Result 705 states and 881 transitions. [2022-10-15 21:11:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:11:10,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2022-10-15 21:11:10,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:10,487 INFO L225 Difference]: With dead ends: 705 [2022-10-15 21:11:10,487 INFO L226 Difference]: Without dead ends: 348 [2022-10-15 21:11:10,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:10,489 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 208 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:10,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 510 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-15 21:11:10,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-10-15 21:11:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2022-10-15 21:11:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 260 states have (on average 1.2923076923076924) internal successors, (336), 282 states have internal predecessors, (336), 47 states have call successors, (47), 22 states have call predecessors, (47), 20 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-10-15 21:11:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 427 transitions. [2022-10-15 21:11:10,519 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 427 transitions. Word has length 44 [2022-10-15 21:11:10,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:10,520 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 427 transitions. [2022-10-15 21:11:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:11:10,520 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 427 transitions. [2022-10-15 21:11:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-15 21:11:10,522 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:10,522 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:11:10,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 21:11:10,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting usb_alloc_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1374127650, now seen corresponding path program 1 times [2022-10-15 21:11:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:10,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517593950] [2022-10-15 21:11:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:10,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:10,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:10,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:11:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:11:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:10,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-15 21:11:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:10,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:11:10,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:10,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517593950] [2022-10-15 21:11:10,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517593950] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:10,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:11:10,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:11:10,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270079076] [2022-10-15 21:11:10,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:10,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:11:10,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:10,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:11:10,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:11:10,791 INFO L87 Difference]: Start difference. First operand 347 states and 427 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 21:11:11,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:11,501 INFO L93 Difference]: Finished difference Result 894 states and 1152 transitions. [2022-10-15 21:11:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:11:11,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2022-10-15 21:11:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:11,508 INFO L225 Difference]: With dead ends: 894 [2022-10-15 21:11:11,508 INFO L226 Difference]: Without dead ends: 559 [2022-10-15 21:11:11,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:11:11,511 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 348 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:11,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1310 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:11:11,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-10-15 21:11:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 351. [2022-10-15 21:11:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 264 states have (on average 1.2878787878787878) internal successors, (340), 286 states have internal predecessors, (340), 47 states have call successors, (47), 22 states have call predecessors, (47), 20 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-10-15 21:11:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 431 transitions. [2022-10-15 21:11:11,553 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 431 transitions. Word has length 45 [2022-10-15 21:11:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:11,553 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 431 transitions. [2022-10-15 21:11:11,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-10-15 21:11:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 431 transitions. [2022-10-15 21:11:11,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 21:11:11,555 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:11,555 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:11,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 21:11:11,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash 184797211, now seen corresponding path program 3 times [2022-10-15 21:11:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486588151] [2022-10-15 21:11:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-15 21:11:12,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:12,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486588151] [2022-10-15 21:11:12,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486588151] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:12,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58233727] [2022-10-15 21:11:12,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 21:11:12,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:12,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:12,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:12,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 21:11:13,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 21:11:13,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:11:13,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 21:11:13,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-15 21:11:13,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:11:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-15 21:11:13,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58233727] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:11:13,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:11:13,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-10-15 21:11:13,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485676627] [2022-10-15 21:11:13,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:11:13,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 21:11:13,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 21:11:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-10-15 21:11:13,675 INFO L87 Difference]: Start difference. First operand 351 states and 431 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:14,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:14,806 INFO L93 Difference]: Finished difference Result 374 states and 458 transitions. [2022-10-15 21:11:14,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 21:11:14,808 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-10-15 21:11:14,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:14,810 INFO L225 Difference]: With dead ends: 374 [2022-10-15 21:11:14,811 INFO L226 Difference]: Without dead ends: 354 [2022-10-15 21:11:14,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-10-15 21:11:14,812 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 18 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:14,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1645 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-15 21:11:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-10-15 21:11:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-10-15 21:11:14,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 267 states have (on average 1.2846441947565543) internal successors, (343), 289 states have internal predecessors, (343), 47 states have call successors, (47), 22 states have call predecessors, (47), 20 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-10-15 21:11:14,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 434 transitions. [2022-10-15 21:11:14,845 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 434 transitions. Word has length 46 [2022-10-15 21:11:14,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:14,846 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 434 transitions. [2022-10-15 21:11:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 434 transitions. [2022-10-15 21:11:14,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 21:11:14,847 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:14,847 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:11:14,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:15,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:15,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting usb_alloc_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2033762422, now seen corresponding path program 1 times [2022-10-15 21:11:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:15,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602499965] [2022-10-15 21:11:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:15,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:11:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-15 21:11:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-15 21:11:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:11:15,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:15,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602499965] [2022-10-15 21:11:15,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602499965] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:15,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:11:15,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 21:11:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963743945] [2022-10-15 21:11:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:15,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:11:15,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:11:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:11:15,681 INFO L87 Difference]: Start difference. First operand 354 states and 434 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:11:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:16,548 INFO L93 Difference]: Finished difference Result 720 states and 895 transitions. [2022-10-15 21:11:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:11:16,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-10-15 21:11:16,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:16,552 INFO L225 Difference]: With dead ends: 720 [2022-10-15 21:11:16,552 INFO L226 Difference]: Without dead ends: 378 [2022-10-15 21:11:16,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-10-15 21:11:16,555 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 101 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:16,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1651 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 21:11:16,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-10-15 21:11:16,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 361. [2022-10-15 21:11:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 272 states have (on average 1.2794117647058822) internal successors, (348), 294 states have internal predecessors, (348), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (50), 46 states have call predecessors, (50), 44 states have call successors, (50) [2022-10-15 21:11:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 445 transitions. [2022-10-15 21:11:16,595 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 445 transitions. Word has length 46 [2022-10-15 21:11:16,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:16,595 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 445 transitions. [2022-10-15 21:11:16,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:11:16,596 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 445 transitions. [2022-10-15 21:11:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-15 21:11:16,597 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:16,597 INFO L195 NwaCegarLoop]: 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] [2022-10-15 21:11:16,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 21:11:16,598 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting usb_alloc_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:16,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:16,598 INFO L85 PathProgramCache]: Analyzing trace with hash 226307959, now seen corresponding path program 1 times [2022-10-15 21:11:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:16,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195899898] [2022-10-15 21:11:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:16,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:11:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-15 21:11:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-15 21:11:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:11:16,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:16,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195899898] [2022-10-15 21:11:16,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195899898] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:16,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:11:16,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:11:16,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72346040] [2022-10-15 21:11:16,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:16,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:11:16,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:16,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:11:16,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:16,920 INFO L87 Difference]: Start difference. First operand 361 states and 445 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:11:17,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:17,565 INFO L93 Difference]: Finished difference Result 1083 states and 1354 transitions. [2022-10-15 21:11:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:11:17,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-10-15 21:11:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:17,573 INFO L225 Difference]: With dead ends: 1083 [2022-10-15 21:11:17,573 INFO L226 Difference]: Without dead ends: 733 [2022-10-15 21:11:17,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:11:17,577 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 453 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:17,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 762 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 21:11:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-10-15 21:11:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 651. [2022-10-15 21:11:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 500 states have (on average 1.284) internal successors, (642), 527 states have internal predecessors, (642), 88 states have call successors, (88), 40 states have call predecessors, (88), 43 states have return successors, (103), 87 states have call predecessors, (103), 85 states have call successors, (103) [2022-10-15 21:11:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 833 transitions. [2022-10-15 21:11:17,652 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 833 transitions. Word has length 46 [2022-10-15 21:11:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:17,653 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 833 transitions. [2022-10-15 21:11:17,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:11:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 833 transitions. [2022-10-15 21:11:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 21:11:17,654 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:17,655 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:17,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 21:11:17,655 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:17,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash -886384613, now seen corresponding path program 4 times [2022-10-15 21:11:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:17,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936628568] [2022-10-15 21:11:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:17,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:18,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 21:11:18,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:18,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936628568] [2022-10-15 21:11:18,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936628568] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:18,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685857171] [2022-10-15 21:11:18,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-15 21:11:18,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:18,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:18,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:18,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 21:11:20,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-15 21:11:20,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 21:11:20,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-15 21:11:20,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 21:11:20,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:11:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-15 21:11:20,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685857171] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:11:20,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:11:20,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2022-10-15 21:11:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460117147] [2022-10-15 21:11:20,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:11:20,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-15 21:11:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-15 21:11:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-10-15 21:11:20,686 INFO L87 Difference]: Start difference. First operand 651 states and 833 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:24,251 INFO L93 Difference]: Finished difference Result 686 states and 873 transitions. [2022-10-15 21:11:24,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-15 21:11:24,252 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2022-10-15 21:11:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:24,257 INFO L225 Difference]: With dead ends: 686 [2022-10-15 21:11:24,257 INFO L226 Difference]: Without dead ends: 655 [2022-10-15 21:11:24,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=248, Invalid=1474, Unknown=0, NotChecked=0, Total=1722 [2022-10-15 21:11:24,260 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 12 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5537 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:24,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5537 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-10-15 21:11:24,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-10-15 21:11:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2022-10-15 21:11:24,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 504 states have (on average 1.2817460317460319) internal successors, (646), 531 states have internal predecessors, (646), 88 states have call successors, (88), 40 states have call predecessors, (88), 43 states have return successors, (103), 87 states have call predecessors, (103), 85 states have call successors, (103) [2022-10-15 21:11:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 837 transitions. [2022-10-15 21:11:24,326 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 837 transitions. Word has length 49 [2022-10-15 21:11:24,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:24,327 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 837 transitions. [2022-10-15 21:11:24,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:11:24,327 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 837 transitions. [2022-10-15 21:11:24,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-15 21:11:24,329 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:24,329 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:24,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:24,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 21:11:24,543 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_free_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_free_coherentErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_alloc_coherentErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 40 more)] === [2022-10-15 21:11:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash 489351195, now seen corresponding path program 5 times [2022-10-15 21:11:24,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:24,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203472172] [2022-10-15 21:11:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,679 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-15 21:11:26,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:26,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203472172] [2022-10-15 21:11:26,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203472172] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:26,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183179462] [2022-10-15 21:11:26,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-15 21:11:26,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:26,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:26,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:26,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process