/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 [2022-10-16 12:57:59,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 12:57:59,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 12:57:59,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 12:57:59,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 12:57:59,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 12:57:59,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 12:57:59,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 12:57:59,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 12:57:59,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 12:57:59,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 12:57:59,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 12:57:59,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 12:57:59,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 12:57:59,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 12:57:59,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 12:57:59,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 12:57:59,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 12:57:59,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 12:57:59,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 12:57:59,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 12:57:59,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 12:57:59,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 12:57:59,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 12:57:59,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 12:57:59,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 12:57:59,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 12:57:59,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 12:57:59,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 12:57:59,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 12:57:59,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 12:57:59,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 12:57:59,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 12:57:59,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 12:57:59,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 12:57:59,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 12:57:59,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 12:57:59,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 12:57:59,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 12:57:59,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 12:57:59,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 12:57:59,498 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 [2022-10-16 12:57:59,557 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 12:57:59,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 12:57:59,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 12:57:59,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 12:57:59,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 12:57:59,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 12:57:59,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 12:57:59,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 12:57:59,565 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 12:57:59,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 12:57:59,566 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 12:57:59,566 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 12:57:59,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 12:57:59,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 12:57:59,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 12:57:59,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 12:57:59,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 12:57:59,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 12:57:59,568 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 12:57:59,569 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 12:57:59,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 12:57:59,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 12:57:59,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 12:57:59,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 12:57:59,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 12:57:59,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 12:57:59,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 12:57:59,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 12:57:59,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 12:57:59,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 12:57:59,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 12:57:59,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 12:57:59,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 12:57:59,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 12:57:59,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 12:58:00,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 12:58:00,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 12:58:00,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 12:58:00,032 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 12:58:00,033 INFO L432 ainManager$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 [2022-10-16 12:58:00,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90637859/8e8618fee0764737926fa66b5beeb568/FLAGd22ff0411 [2022-10-16 12:58:01,157 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 12:58:01,158 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 [2022-10-16 12:58:01,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90637859/8e8618fee0764737926fa66b5beeb568/FLAGd22ff0411 [2022-10-16 12:58:01,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a90637859/8e8618fee0764737926fa66b5beeb568 [2022-10-16 12:58:01,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 12:58:01,614 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 12:58:01,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 12:58:01,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 12:58:01,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 12:58:01,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:58:01" (1/1) ... [2022-10-16 12:58:01,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3849a973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:01, skipping insertion in model container [2022-10-16 12:58:01,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:58:01" (1/1) ... [2022-10-16 12:58:01,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 12:58:01,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 12:58:03,141 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] [2022-10-16 12:58:03,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 12:58:03,213 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 12:58:03,565 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] [2022-10-16 12:58:03,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 12:58:03,892 INFO L208 MainTranslator]: Completed translation [2022-10-16 12:58:03,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03 WrapperNode [2022-10-16 12:58:03,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 12:58:03,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 12:58:03,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 12:58:03,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 12:58:03,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:03,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,073 INFO L138 Inliner]: procedures = 133, calls = 733, calls flagged for inlining = 54, calls inlined = 44, statements flattened = 1408 [2022-10-16 12:58:04,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 12:58:04,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 12:58:04,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 12:58:04,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 12:58:04,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,224 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 12:58:04,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 12:58:04,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 12:58:04,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 12:58:04,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (1/1) ... [2022-10-16 12:58:04,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 12:58:04,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:04,312 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) [2022-10-16 12:58:04,331 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 [2022-10-16 12:58:04,379 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-16 12:58:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-16 12:58:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_init [2022-10-16 12:58:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_init [2022-10-16 12:58:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 12:58:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-16 12:58:04,380 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-16 12:58:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 12:58:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 12:58:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 12:58:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-10-16 12:58:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-10-16 12:58:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2022-10-16 12:58:04,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2022-10-16 12:58:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-16 12:58:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-16 12:58:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-16 12:58:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-16 12:58:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_exit [2022-10-16 12:58:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_exit [2022-10-16 12:58:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-10-16 12:58:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-10-16 12:58:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-16 12:58:04,383 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-16 12:58:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-10-16 12:58:04,383 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-10-16 12:58:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 12:58:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-10-16 12:58:04,383 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-10-16 12:58:04,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-10-16 12:58:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-10-16 12:58:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-16 12:58:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-16 12:58:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-16 12:58:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-16 12:58:04,384 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2022-10-16 12:58:04,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2022-10-16 12:58:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 12:58:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-10-16 12:58:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-10-16 12:58:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 12:58:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-10-16 12:58:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-10-16 12:58:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 12:58:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 12:58:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2022-10-16 12:58:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2022-10-16 12:58:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-16 12:58:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-16 12:58:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-10-16 12:58:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-10-16 12:58:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 12:58:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-16 12:58:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-16 12:58:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-16 12:58:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-16 12:58:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-10-16 12:58:04,387 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-10-16 12:58:04,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-10-16 12:58:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-10-16 12:58:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 12:58:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 12:58:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-16 12:58:04,388 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-16 12:58:04,388 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-10-16 12:58:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-10-16 12:58:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-16 12:58:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-16 12:58:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-10-16 12:58:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-10-16 12:58:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-16 12:58:04,389 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-16 12:58:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-16 12:58:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-16 12:58:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-10-16 12:58:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-10-16 12:58:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-10-16 12:58:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-10-16 12:58:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 12:58:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-10-16 12:58:04,391 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-10-16 12:58:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-16 12:58:04,391 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-16 12:58:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 12:58:04,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 12:58:04,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 12:58:04,796 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 12:58:04,800 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 12:58:05,250 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-10-16 12:58:05,507 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 12:58:07,998 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !false; [2022-10-16 12:58:07,998 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume false; [2022-10-16 12:58:08,054 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 12:58:08,076 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 12:58:08,076 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-10-16 12:58:08,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:58:08 BoogieIcfgContainer [2022-10-16 12:58:08,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 12:58:08,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 12:58:08,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 12:58:08,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 12:58:08,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:58:01" (1/3) ... [2022-10-16 12:58:08,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47feb919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:58:08, skipping insertion in model container [2022-10-16 12:58:08,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:03" (2/3) ... [2022-10-16 12:58:08,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47feb919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:58:08, skipping insertion in model container [2022-10-16 12:58:08,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:58:08" (3/3) ... [2022-10-16 12:58:08,095 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2022-10-16 12:58:08,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 12:58:08,118 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2022-10-16 12:58:08,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 12:58:08,232 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;@3aace49e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 12:58:08,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-10-16 12:58:08,240 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) [2022-10-16 12:58:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 12:58:08,252 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:08,253 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] [2022-10-16 12:58:08,254 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)] === [2022-10-16 12:58:08,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash 428098850, now seen corresponding path program 1 times [2022-10-16 12:58:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:08,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943291641] [2022-10-16 12:58:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:09,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:09,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943291641] [2022-10-16 12:58:09,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943291641] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:09,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:09,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 12:58:09,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49490205] [2022-10-16 12:58:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:09,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 12:58:09,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 12:58:09,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 12:58:09,524 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) [2022-10-16 12:58:09,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:09,744 INFO L93 Difference]: Finished difference Result 835 states and 1113 transitions. [2022-10-16 12:58:09,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 12:58:09,751 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 [2022-10-16 12:58:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:09,778 INFO L225 Difference]: With dead ends: 835 [2022-10-16 12:58:09,778 INFO L226 Difference]: Without dead ends: 301 [2022-10-16 12:58:09,791 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 [2022-10-16 12:58:09,798 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 [2022-10-16 12:58:09,800 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] [2022-10-16 12:58:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-10-16 12:58:09,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2022-10-16 12:58:09,880 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) [2022-10-16 12:58:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 359 transitions. [2022-10-16 12:58:09,888 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 359 transitions. Word has length 28 [2022-10-16 12:58:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:09,889 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 359 transitions. [2022-10-16 12:58:09,889 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) [2022-10-16 12:58:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 359 transitions. [2022-10-16 12:58:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 12:58:09,893 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:09,893 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] [2022-10-16 12:58:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 12:58:09,894 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)] === [2022-10-16 12:58:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1051975971, now seen corresponding path program 1 times [2022-10-16 12:58:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:09,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722563887] [2022-10-16 12:58:09,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:09,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:10,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722563887] [2022-10-16 12:58:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722563887] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:10,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:10,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 12:58:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481216444] [2022-10-16 12:58:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:10,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:10,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:10,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:58:10,702 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) [2022-10-16 12:58:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:10,840 INFO L93 Difference]: Finished difference Result 317 states and 377 transitions. [2022-10-16 12:58:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:10,841 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 [2022-10-16 12:58:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:10,845 INFO L225 Difference]: With dead ends: 317 [2022-10-16 12:58:10,846 INFO L226 Difference]: Without dead ends: 302 [2022-10-16 12:58:10,847 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 [2022-10-16 12:58:10,850 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 [2022-10-16 12:58:10,852 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] [2022-10-16 12:58:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-10-16 12:58:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2022-10-16 12:58:10,892 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) [2022-10-16 12:58:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 360 transitions. [2022-10-16 12:58:10,896 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 360 transitions. Word has length 37 [2022-10-16 12:58:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:10,898 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 360 transitions. [2022-10-16 12:58:10,898 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) [2022-10-16 12:58:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 360 transitions. [2022-10-16 12:58:10,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 12:58:10,901 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:10,901 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] [2022-10-16 12:58:10,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 12:58:10,901 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)] === [2022-10-16 12:58:10,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1525614365, now seen corresponding path program 1 times [2022-10-16 12:58:10,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:10,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008609060] [2022-10-16 12:58:10,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:10,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:11,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 12:58:11,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:11,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008609060] [2022-10-16 12:58:11,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008609060] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:11,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:11,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 12:58:11,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001602722] [2022-10-16 12:58:11,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:11,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:11,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:11,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:11,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:58:11,520 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) [2022-10-16 12:58:11,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:11,541 INFO L93 Difference]: Finished difference Result 315 states and 373 transitions. [2022-10-16 12:58:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:11,542 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 [2022-10-16 12:58:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:11,545 INFO L225 Difference]: With dead ends: 315 [2022-10-16 12:58:11,545 INFO L226 Difference]: Without dead ends: 303 [2022-10-16 12:58:11,546 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 [2022-10-16 12:58:11,547 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 [2022-10-16 12:58:11,548 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] [2022-10-16 12:58:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-10-16 12:58:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2022-10-16 12:58:11,564 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) [2022-10-16 12:58:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 361 transitions. [2022-10-16 12:58:11,567 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 361 transitions. Word has length 38 [2022-10-16 12:58:11,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:11,567 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 361 transitions. [2022-10-16 12:58:11,568 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) [2022-10-16 12:58:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 361 transitions. [2022-10-16 12:58:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 12:58:11,570 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:11,570 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] [2022-10-16 12:58:11,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 12:58:11,571 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)] === [2022-10-16 12:58:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2096424612, now seen corresponding path program 1 times [2022-10-16 12:58:11,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:11,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227146145] [2022-10-16 12:58:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:11,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 12:58:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:11,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-16 12:58:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:11,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:11,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227146145] [2022-10-16 12:58:11,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227146145] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:11,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:11,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 12:58:11,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903559679] [2022-10-16 12:58:11,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:11,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 12:58:11,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 12:58:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:58:11,907 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) [2022-10-16 12:58:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:12,489 INFO L93 Difference]: Finished difference Result 695 states and 858 transitions. [2022-10-16 12:58:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 12:58:12,490 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 [2022-10-16 12:58:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:12,530 INFO L225 Difference]: With dead ends: 695 [2022-10-16 12:58:12,530 INFO L226 Difference]: Without dead ends: 403 [2022-10-16 12:58:12,531 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 [2022-10-16 12:58:12,543 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 221 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 861 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 [2022-10-16 12:58:12,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 861 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 12:58:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-10-16 12:58:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 361. [2022-10-16 12:58:12,568 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) [2022-10-16 12:58:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 451 transitions. [2022-10-16 12:58:12,571 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 451 transitions. Word has length 36 [2022-10-16 12:58:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:12,571 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 451 transitions. [2022-10-16 12:58:12,572 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) [2022-10-16 12:58:12,572 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 451 transitions. [2022-10-16 12:58:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-16 12:58:12,574 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:12,574 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] [2022-10-16 12:58:12,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 12:58:12,575 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)] === [2022-10-16 12:58:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -31921385, now seen corresponding path program 1 times [2022-10-16 12:58:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:12,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239957974] [2022-10-16 12:58:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:12,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 12:58:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:13,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239957974] [2022-10-16 12:58:13,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239957974] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26163996] [2022-10-16 12:58:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:13,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:13,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:13,259 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) [2022-10-16 12:58:13,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 12:58:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:13,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 12:58:13,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 12:58:13,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:58:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 12:58:13,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26163996] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:13,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-16 12:58:13,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5] total 8 [2022-10-16 12:58:13,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831419328] [2022-10-16 12:58:13,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:13,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 12:58:13,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:13,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 12:58:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 12:58:13,939 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) [2022-10-16 12:58:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:14,077 INFO L93 Difference]: Finished difference Result 377 states and 468 transitions. [2022-10-16 12:58:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 12:58:14,078 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 [2022-10-16 12:58:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:14,082 INFO L225 Difference]: With dead ends: 377 [2022-10-16 12:58:14,082 INFO L226 Difference]: Without dead ends: 362 [2022-10-16 12:58:14,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 12:58:14,084 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 [2022-10-16 12:58:14,085 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] [2022-10-16 12:58:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-10-16 12:58:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-10-16 12:58:14,105 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) [2022-10-16 12:58:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 452 transitions. [2022-10-16 12:58:14,109 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 452 transitions. Word has length 39 [2022-10-16 12:58:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:14,109 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 452 transitions. [2022-10-16 12:58:14,110 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) [2022-10-16 12:58:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 452 transitions. [2022-10-16 12:58:14,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-16 12:58:14,112 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:14,112 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] [2022-10-16 12:58:14,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:14,326 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 [2022-10-16 12:58:14,327 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)] === [2022-10-16 12:58:14,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:14,328 INFO L85 PathProgramCache]: Analyzing trace with hash -196648551, now seen corresponding path program 1 times [2022-10-16 12:58:14,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:14,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643207493] [2022-10-16 12:58:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:14,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:14,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 12:58:15,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:15,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643207493] [2022-10-16 12:58:15,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643207493] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:15,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003882941] [2022-10-16 12:58:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:15,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:15,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:15,009 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) [2022-10-16 12:58:15,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 12:58:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:15,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 12:58:15,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:15,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:58:15,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 12:58:15,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003882941] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 12:58:15,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 12:58:15,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-10-16 12:58:15,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487978434] [2022-10-16 12:58:15,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 12:58:15,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 12:58:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 12:58:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-16 12:58:15,577 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) [2022-10-16 12:58:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:15,903 INFO L93 Difference]: Finished difference Result 377 states and 469 transitions. [2022-10-16 12:58:15,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 12:58:15,903 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 [2022-10-16 12:58:15,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:15,907 INFO L225 Difference]: With dead ends: 377 [2022-10-16 12:58:15,907 INFO L226 Difference]: Without dead ends: 365 [2022-10-16 12:58:15,908 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 [2022-10-16 12:58:15,909 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 0 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-10-16 12:58:15,909 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] [2022-10-16 12:58:15,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-10-16 12:58:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2022-10-16 12:58:15,927 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) [2022-10-16 12:58:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 455 transitions. [2022-10-16 12:58:15,930 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 455 transitions. Word has length 40 [2022-10-16 12:58:15,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:15,931 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 455 transitions. [2022-10-16 12:58:15,931 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) [2022-10-16 12:58:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 455 transitions. [2022-10-16 12:58:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 12:58:15,933 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:15,933 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] [2022-10-16 12:58:15,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:16,149 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 [2022-10-16 12:58:16,149 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)] === [2022-10-16 12:58:16,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:16,150 INFO L85 PathProgramCache]: Analyzing trace with hash 825628635, now seen corresponding path program 2 times [2022-10-16 12:58:16,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:16,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907003189] [2022-10-16 12:58:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:16,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:16,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 12:58:16,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907003189] [2022-10-16 12:58:16,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907003189] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445646744] [2022-10-16 12:58:16,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 12:58:16,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:16,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:16,806 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) [2022-10-16 12:58:16,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 12:58:18,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 12:58:18,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 12:58:18,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1338 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-16 12:58:18,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 12:58:18,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:58:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 12:58:18,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445646744] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 12:58:18,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 12:58:18,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 6] total 10 [2022-10-16 12:58:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120014040] [2022-10-16 12:58:18,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 12:58:18,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 12:58:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 12:58:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-16 12:58:18,338 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) [2022-10-16 12:58:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:18,971 INFO L93 Difference]: Finished difference Result 388 states and 482 transitions. [2022-10-16 12:58:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 12:58:18,972 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 [2022-10-16 12:58:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:18,974 INFO L225 Difference]: With dead ends: 388 [2022-10-16 12:58:18,975 INFO L226 Difference]: Without dead ends: 368 [2022-10-16 12:58:18,975 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 [2022-10-16 12:58:18,976 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 11 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:18,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2098 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 12:58:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-10-16 12:58:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-10-16 12:58:18,996 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) [2022-10-16 12:58:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 458 transitions. [2022-10-16 12:58:18,999 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 458 transitions. Word has length 43 [2022-10-16 12:58:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:18,999 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 458 transitions. [2022-10-16 12:58:19,000 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) [2022-10-16 12:58:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 458 transitions. [2022-10-16 12:58:19,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 12:58:19,001 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:19,001 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] [2022-10-16 12:58:19,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:19,217 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 [2022-10-16 12:58:19,218 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)] === [2022-10-16 12:58:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash 499499711, now seen corresponding path program 1 times [2022-10-16 12:58:19,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:19,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255583444] [2022-10-16 12:58:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:19,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 12:58:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-16 12:58:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-10-16 12:58:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-16 12:58:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:19,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 12:58:19,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:19,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255583444] [2022-10-16 12:58:19,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255583444] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:19,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:19,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 12:58:19,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784140273] [2022-10-16 12:58:19,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:19,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 12:58:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:19,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 12:58:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:58:19,423 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) [2022-10-16 12:58:21,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:21,319 INFO L93 Difference]: Finished difference Result 705 states and 881 transitions. [2022-10-16 12:58:21,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 12:58:21,320 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 [2022-10-16 12:58:21,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:21,323 INFO L225 Difference]: With dead ends: 705 [2022-10-16 12:58:21,323 INFO L226 Difference]: Without dead ends: 348 [2022-10-16 12:58:21,325 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 [2022-10-16 12:58:21,326 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 208 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 1.8s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:21,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 510 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-16 12:58:21,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-10-16 12:58:21,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2022-10-16 12:58:21,348 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) [2022-10-16 12:58:21,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 427 transitions. [2022-10-16 12:58:21,351 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 427 transitions. Word has length 44 [2022-10-16 12:58:21,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:21,351 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 427 transitions. [2022-10-16 12:58:21,352 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) [2022-10-16 12:58:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 427 transitions. [2022-10-16 12:58:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 12:58:21,353 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:21,353 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] [2022-10-16 12:58:21,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 12:58:21,353 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)] === [2022-10-16 12:58:21,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:21,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1374127650, now seen corresponding path program 1 times [2022-10-16 12:58:21,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:21,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826554716] [2022-10-16 12:58:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:21,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:21,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 12:58:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 12:58:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:21,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-16 12:58:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:21,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:21,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826554716] [2022-10-16 12:58:21,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826554716] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:21,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:21,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 12:58:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964501838] [2022-10-16 12:58:21,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:21,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 12:58:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:21,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 12:58:21,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 12:58:21,574 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) [2022-10-16 12:58:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:22,143 INFO L93 Difference]: Finished difference Result 894 states and 1152 transitions. [2022-10-16 12:58:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 12:58:22,144 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 [2022-10-16 12:58:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:22,149 INFO L225 Difference]: With dead ends: 894 [2022-10-16 12:58:22,150 INFO L226 Difference]: Without dead ends: 559 [2022-10-16 12:58:22,152 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 [2022-10-16 12:58:22,153 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 348 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:22,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1308 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 12:58:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-10-16 12:58:22,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 351. [2022-10-16 12:58:22,186 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) [2022-10-16 12:58:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 431 transitions. [2022-10-16 12:58:22,189 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 431 transitions. Word has length 45 [2022-10-16 12:58:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:22,190 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 431 transitions. [2022-10-16 12:58:22,190 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) [2022-10-16 12:58:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 431 transitions. [2022-10-16 12:58:22,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 12:58:22,191 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:22,191 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] [2022-10-16 12:58:22,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-16 12:58:22,192 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)] === [2022-10-16 12:58:22,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash 184797211, now seen corresponding path program 3 times [2022-10-16 12:58:22,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:22,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754999693] [2022-10-16 12:58:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:22,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 12:58:23,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:23,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754999693] [2022-10-16 12:58:23,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754999693] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:23,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99979996] [2022-10-16 12:58:23,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 12:58:23,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:23,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:23,185 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) [2022-10-16 12:58:23,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 12:58:23,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 12:58:23,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 12:58:23,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 12:58:23,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-16 12:58:23,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:58:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-16 12:58:24,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99979996] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 12:58:24,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 12:58:24,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-10-16 12:58:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199123078] [2022-10-16 12:58:24,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 12:58:24,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 12:58:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 12:58:24,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-10-16 12:58:24,038 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) [2022-10-16 12:58:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:25,192 INFO L93 Difference]: Finished difference Result 374 states and 458 transitions. [2022-10-16 12:58:25,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 12:58:25,193 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 [2022-10-16 12:58:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:25,196 INFO L225 Difference]: With dead ends: 374 [2022-10-16 12:58:25,196 INFO L226 Difference]: Without dead ends: 354 [2022-10-16 12:58:25,197 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 [2022-10-16 12:58:25,198 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 [2022-10-16 12:58:25,198 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] [2022-10-16 12:58:25,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-10-16 12:58:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2022-10-16 12:58:25,225 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) [2022-10-16 12:58:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 434 transitions. [2022-10-16 12:58:25,227 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 434 transitions. Word has length 46 [2022-10-16 12:58:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:25,228 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 434 transitions. [2022-10-16 12:58:25,228 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) [2022-10-16 12:58:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 434 transitions. [2022-10-16 12:58:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 12:58:25,229 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:25,229 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] [2022-10-16 12:58:25,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:25,440 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 [2022-10-16 12:58:25,441 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)] === [2022-10-16 12:58:25,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2033762422, now seen corresponding path program 1 times [2022-10-16 12:58:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:25,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549020867] [2022-10-16 12:58:25,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 12:58:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 12:58:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-16 12:58:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549020867] [2022-10-16 12:58:25,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549020867] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:25,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:25,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-16 12:58:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458765151] [2022-10-16 12:58:25,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 12:58:25,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 12:58:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-16 12:58:25,991 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) [2022-10-16 12:58:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:26,786 INFO L93 Difference]: Finished difference Result 720 states and 895 transitions. [2022-10-16 12:58:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 12:58:26,787 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 [2022-10-16 12:58:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:26,790 INFO L225 Difference]: With dead ends: 720 [2022-10-16 12:58:26,790 INFO L226 Difference]: Without dead ends: 378 [2022-10-16 12:58:26,792 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 [2022-10-16 12:58:26,792 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, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:26,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1651 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 12:58:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-10-16 12:58:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 361. [2022-10-16 12:58:26,827 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) [2022-10-16 12:58:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 445 transitions. [2022-10-16 12:58:26,830 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 445 transitions. Word has length 46 [2022-10-16 12:58:26,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:26,832 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 445 transitions. [2022-10-16 12:58:26,832 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) [2022-10-16 12:58:26,832 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 445 transitions. [2022-10-16 12:58:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 12:58:26,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:26,833 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] [2022-10-16 12:58:26,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 12:58:26,833 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)] === [2022-10-16 12:58:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash 226307959, now seen corresponding path program 1 times [2022-10-16 12:58:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:26,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964767889] [2022-10-16 12:58:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:26,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 12:58:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:27,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 12:58:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-10-16 12:58:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:27,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:27,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964767889] [2022-10-16 12:58:27,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964767889] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:27,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:27,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 12:58:27,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230478392] [2022-10-16 12:58:27,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:27,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 12:58:27,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 12:58:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:58:27,177 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) [2022-10-16 12:58:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:27,763 INFO L93 Difference]: Finished difference Result 1083 states and 1354 transitions. [2022-10-16 12:58:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 12:58:27,764 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 [2022-10-16 12:58:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:27,770 INFO L225 Difference]: With dead ends: 1083 [2022-10-16 12:58:27,771 INFO L226 Difference]: Without dead ends: 733 [2022-10-16 12:58:27,773 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 [2022-10-16 12:58:27,773 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 453 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 764 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 [2022-10-16 12:58:27,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 764 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 12:58:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-10-16 12:58:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 651. [2022-10-16 12:58:27,838 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) [2022-10-16 12:58:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 833 transitions. [2022-10-16 12:58:27,842 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 833 transitions. Word has length 46 [2022-10-16 12:58:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:27,843 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 833 transitions. [2022-10-16 12:58:27,843 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) [2022-10-16 12:58:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 833 transitions. [2022-10-16 12:58:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 12:58:27,844 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:27,845 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] [2022-10-16 12:58:27,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-16 12:58:27,845 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)] === [2022-10-16 12:58:27,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash -886384613, now seen corresponding path program 4 times [2022-10-16 12:58:27,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:27,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369171474] [2022-10-16 12:58:27,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:27,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 12:58:28,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:28,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369171474] [2022-10-16 12:58:28,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369171474] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:28,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916901099] [2022-10-16 12:58:28,943 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 12:58:28,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:28,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:28,945 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) [2022-10-16 12:58:28,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 12:58:29,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 12:58:29,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 12:58:29,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-16 12:58:29,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 12:58:30,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:58:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-16 12:58:30,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916901099] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 12:58:30,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 12:58:30,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2022-10-16 12:58:30,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641461745] [2022-10-16 12:58:30,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 12:58:30,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 12:58:30,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:30,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 12:58:30,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-10-16 12:58:30,618 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) [2022-10-16 12:58:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:33,863 INFO L93 Difference]: Finished difference Result 686 states and 873 transitions. [2022-10-16 12:58:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-16 12:58:33,864 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 [2022-10-16 12:58:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:33,868 INFO L225 Difference]: With dead ends: 686 [2022-10-16 12:58:33,869 INFO L226 Difference]: Without dead ends: 655 [2022-10-16 12:58:33,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=248, Invalid=1474, Unknown=0, NotChecked=0, Total=1722 [2022-10-16 12:58:33,872 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 12 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.4s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:33,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 5537 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-16 12:58:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-10-16 12:58:33,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2022-10-16 12:58:33,927 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) [2022-10-16 12:58:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 837 transitions. [2022-10-16 12:58:33,931 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 837 transitions. Word has length 49 [2022-10-16 12:58:33,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:33,932 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 837 transitions. [2022-10-16 12:58:33,932 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) [2022-10-16 12:58:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 837 transitions. [2022-10-16 12:58:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-16 12:58:33,933 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:33,934 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] [2022-10-16 12:58:33,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:34,148 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 [2022-10-16 12:58:34,149 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)] === [2022-10-16 12:58:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash 489351195, now seen corresponding path program 5 times [2022-10-16 12:58:34,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:34,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134367624] [2022-10-16 12:58:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:34,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-10-16 12:58:36,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:36,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134367624] [2022-10-16 12:58:36,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134367624] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:36,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619960786] [2022-10-16 12:58:36,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 12:58:36,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:36,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:36,056 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) [2022-10-16 12:58:36,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process