/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-staging-lirc-lirc_imon.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:10:53,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:10:53,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:10:53,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:10:53,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:10:53,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:10:53,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:10:53,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:10:53,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:10:53,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:10:53,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:10:53,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:10:53,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:10:53,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:10:53,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:10:53,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:10:53,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:10:53,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:10:53,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:10:53,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:10:53,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:10:53,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:10:53,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:10:53,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:10:53,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:10:53,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:10:53,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:10:53,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:10:53,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:10:53,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:10:53,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:10:53,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:10:53,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:10:53,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:10:53,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:10:53,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:10:53,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:10:53,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:10:53,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:10:53,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:10:53,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:10:53,454 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:10:53,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:10:53,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:10:53,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:10:53,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:10:53,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:10:53,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:10:53,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:10:53,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:10:53,526 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:10:53,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:10:53,527 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:10:53,528 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:10:53,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:10:53,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:10:53,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:10:53,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:10:53,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:10:53,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:10:53,530 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:10:53,530 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:10:53,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:10:53,530 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:10:53,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:10:53,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:10:53,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:10:53,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:10:53,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:10:53,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:10:53,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:10:53,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:10:53,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:10:53,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:10:53,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:10:53,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:10:54,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:10:54,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:10:54,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:10:54,081 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:10:54,082 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:10:54,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2022-10-15 21:10:54,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b87d4fd/37601d20d9d84763a243515c95402f34/FLAG5338cf8e8 [2022-10-15 21:10:55,338 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:10:55,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2022-10-15 21:10:55,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b87d4fd/37601d20d9d84763a243515c95402f34/FLAG5338cf8e8 [2022-10-15 21:10:55,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b87d4fd/37601d20d9d84763a243515c95402f34 [2022-10-15 21:10:55,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:10:55,819 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:10:55,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:10:55,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:10:55,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:10:55,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:10:55" (1/1) ... [2022-10-15 21:10:55,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70259ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:55, skipping insertion in model container [2022-10-15 21:10:55,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:10:55" (1/1) ... [2022-10-15 21:10:55,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:10:55,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:10:57,193 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-staging-lirc-lirc_imon.ko.cil.out.i[153430,153443] [2022-10-15 21:10:57,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:10:57,279 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:10:57,523 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-staging-lirc-lirc_imon.ko.cil.out.i[153430,153443] [2022-10-15 21:10:57,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:10:57,684 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:10:57,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57 WrapperNode [2022-10-15 21:10:57,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:10:57,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:10:57,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:10:57,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:10:57,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:57,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,008 INFO L138 Inliner]: procedures = 121, calls = 866, calls flagged for inlining = 46, calls inlined = 30, statements flattened = 1613 [2022-10-15 21:10:58,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:10:58,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:10:58,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:10:58,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:10:58,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,264 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:10:58,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:10:58,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:10:58,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:10:58,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (1/1) ... [2022-10-15 21:10:58,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:10:58,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:10:58,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 21:10:58,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 21:10:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:10:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-15 21:10:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-15 21:10:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-15 21:10:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-15 21:10:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_id [2022-10-15 21:10:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_id [2022-10-15 21:10:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:10:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure imon_init [2022-10-15 21:10:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_init [2022-10-15 21:10:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:10:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:10:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:10:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:10:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-15 21:10:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-15 21:10:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure imon_exit [2022-10-15 21:10:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_exit [2022-10-15 21:10:58,417 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-10-15 21:10:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-10-15 21:10:58,417 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:10:58,417 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:10:58,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:10:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-15 21:10:58,418 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-15 21:10:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-10-15 21:10:58,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-10-15 21:10:58,418 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2022-10-15 21:10:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2022-10-15 21:10:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:10:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-15 21:10:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-15 21:10:58,419 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_free [2022-10-15 21:10:58,419 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_free [2022-10-15 21:10:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:10:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:10:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:10:58,420 INFO L130 BoogieDeclarations]: Found specification of procedure deregister_from_lirc [2022-10-15 21:10:58,420 INFO L138 BoogieDeclarations]: Found implementation of procedure deregister_from_lirc [2022-10-15 21:10:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:10:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-15 21:10:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-15 21:10:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-10-15 21:10:58,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-10-15 21:10:58,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:10:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:10:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-15 21:10:58,422 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-15 21:10:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-15 21:10:58,422 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-15 21:10:58,422 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-15 21:10:58,423 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-15 21:10:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-15 21:10:58,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-15 21:10:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-15 21:10:58,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-15 21:10:58,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-10-15 21:10:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-10-15 21:10:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:10:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-15 21:10:58,424 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-15 21:10:58,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:10:58,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:10:58,848 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:10:58,853 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:10:59,254 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-10-15 21:10:59,479 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-15 21:11:01,594 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume !false; [2022-10-15 21:11:01,595 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume false; [2022-10-15 21:11:01,664 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:11:01,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:11:01,692 INFO L300 CfgBuilder]: Removed 25 assume(true) statements. [2022-10-15 21:11:01,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:11:01 BoogieIcfgContainer [2022-10-15 21:11:01,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:11:01,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:11:01,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:11:01,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:11:01,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:10:55" (1/3) ... [2022-10-15 21:11:01,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661690e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:11:01, skipping insertion in model container [2022-10-15 21:11:01,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:10:57" (2/3) ... [2022-10-15 21:11:01,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661690e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:11:01, skipping insertion in model container [2022-10-15 21:11:01,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:11:01" (3/3) ... [2022-10-15 21:11:01,715 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2022-10-15 21:11:01,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:11:01,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-15 21:11:01,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:11:01,895 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;@39d02c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:11:01,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-15 21:11:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 282 states have (on average 1.5425531914893618) internal successors, (435), 320 states have internal predecessors, (435), 61 states have call successors, (61), 25 states have call predecessors, (61), 24 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2022-10-15 21:11:01,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 21:11:01,922 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:01,923 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] [2022-10-15 21:11:01,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 964915947, now seen corresponding path program 1 times [2022-10-15 21:11:01,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:01,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392914520] [2022-10-15 21:11:01,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:01,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:03,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:11:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:03,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:11:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:03,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392914520] [2022-10-15 21:11:03,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392914520] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:03,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:11:03,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:11:03,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387209591] [2022-10-15 21:11:03,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:03,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:11:03,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:03,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:11:03,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:03,127 INFO L87 Difference]: Start difference. First operand has 390 states, 282 states have (on average 1.5425531914893618) internal successors, (435), 320 states have internal predecessors, (435), 61 states have call successors, (61), 25 states have call predecessors, (61), 24 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:11:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:04,103 INFO L93 Difference]: Finished difference Result 812 states and 1180 transitions. [2022-10-15 21:11:04,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:11:04,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-10-15 21:11:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:04,128 INFO L225 Difference]: With dead ends: 812 [2022-10-15 21:11:04,128 INFO L226 Difference]: Without dead ends: 406 [2022-10-15 21:11:04,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:04,142 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 308 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:04,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 914 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 21:11:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-10-15 21:11:04,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 379. [2022-10-15 21:11:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 281 states have (on average 1.3345195729537367) internal successors, (375), 310 states have internal predecessors, (375), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-10-15 21:11:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 487 transitions. [2022-10-15 21:11:04,288 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 487 transitions. Word has length 35 [2022-10-15 21:11:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:04,290 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 487 transitions. [2022-10-15 21:11:04,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:11:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 487 transitions. [2022-10-15 21:11:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 21:11:04,295 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:04,295 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] [2022-10-15 21:11:04,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:11:04,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash 522332980, now seen corresponding path program 1 times [2022-10-15 21:11:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:04,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071304257] [2022-10-15 21:11:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:04,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:11:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:04,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071304257] [2022-10-15 21:11:04,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071304257] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:04,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:11:04,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:11:04,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506973508] [2022-10-15 21:11:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:04,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:11:04,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:04,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:11:04,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:04,979 INFO L87 Difference]: Start difference. First operand 379 states and 487 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:11:05,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:05,906 INFO L93 Difference]: Finished difference Result 864 states and 1138 transitions. [2022-10-15 21:11:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:11:05,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-10-15 21:11:05,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:05,921 INFO L225 Difference]: With dead ends: 864 [2022-10-15 21:11:05,921 INFO L226 Difference]: Without dead ends: 497 [2022-10-15 21:11:05,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:11:05,928 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 182 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:05,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1092 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 21:11:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-10-15 21:11:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 386. [2022-10-15 21:11:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 288 states have (on average 1.3263888888888888) internal successors, (382), 317 states have internal predecessors, (382), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-10-15 21:11:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 494 transitions. [2022-10-15 21:11:05,999 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 494 transitions. Word has length 44 [2022-10-15 21:11:06,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:06,000 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 494 transitions. [2022-10-15 21:11:06,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:11:06,001 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 494 transitions. [2022-10-15 21:11:06,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-15 21:11:06,012 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:06,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:06,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:11:06,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:06,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:06,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1956072616, now seen corresponding path program 1 times [2022-10-15 21:11:06,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:06,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940583359] [2022-10-15 21:11:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:06,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:11:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-15 21:11:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:11:06,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:06,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940583359] [2022-10-15 21:11:06,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940583359] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:06,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883004639] [2022-10-15 21:11:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:06,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:06,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:06,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:11:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:07,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 21:11:07,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-15 21:11:07,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:07,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883004639] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:07,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:07,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-10-15 21:11:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685222501] [2022-10-15 21:11:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:07,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:11:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:07,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:11:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:11:07,608 INFO L87 Difference]: Start difference. First operand 386 states and 494 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:11:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:07,659 INFO L93 Difference]: Finished difference Result 764 states and 979 transitions. [2022-10-15 21:11:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:11:07,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-10-15 21:11:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:07,664 INFO L225 Difference]: With dead ends: 764 [2022-10-15 21:11:07,664 INFO L226 Difference]: Without dead ends: 386 [2022-10-15 21:11:07,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:11:07,667 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 0 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:07,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1874 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:11:07,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-10-15 21:11:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-10-15 21:11:07,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 288 states have (on average 1.3229166666666667) internal successors, (381), 317 states have internal predecessors, (381), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-10-15 21:11:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 493 transitions. [2022-10-15 21:11:07,694 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 493 transitions. Word has length 77 [2022-10-15 21:11:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:07,694 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 493 transitions. [2022-10-15 21:11:07,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:11:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 493 transitions. [2022-10-15 21:11:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-15 21:11:07,696 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:07,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:07,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:07,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:07,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1001843721, now seen corresponding path program 1 times [2022-10-15 21:11:07,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:07,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504455781] [2022-10-15 21:11:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:07,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:11:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-15 21:11:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:11:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504455781] [2022-10-15 21:11:08,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504455781] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206045532] [2022-10-15 21:11:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:08,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:08,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:08,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:08,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:11:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:09,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 21:11:09,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:11:09,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:09,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206045532] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:09,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:09,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-10-15 21:11:09,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064046472] [2022-10-15 21:11:09,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:09,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:11:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:09,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:11:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:11:09,320 INFO L87 Difference]: Start difference. First operand 386 states and 493 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-15 21:11:09,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:09,571 INFO L93 Difference]: Finished difference Result 784 states and 1015 transitions. [2022-10-15 21:11:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:11:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 77 [2022-10-15 21:11:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:09,579 INFO L225 Difference]: With dead ends: 784 [2022-10-15 21:11:09,579 INFO L226 Difference]: Without dead ends: 383 [2022-10-15 21:11:09,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:11:09,586 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 25 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:09,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1904 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:11:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-10-15 21:11:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 380. [2022-10-15 21:11:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 286 states have (on average 1.3041958041958042) internal successors, (373), 312 states have internal predecessors, (373), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-15 21:11:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 476 transitions. [2022-10-15 21:11:09,617 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 476 transitions. Word has length 77 [2022-10-15 21:11:09,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:09,617 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 476 transitions. [2022-10-15 21:11:09,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-15 21:11:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 476 transitions. [2022-10-15 21:11:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-15 21:11:09,626 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:09,627 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:09,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:09,841 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,SelfDestructingSolverStorable3 [2022-10-15 21:11:09,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:09,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash 908837929, now seen corresponding path program 1 times [2022-10-15 21:11:09,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:09,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668348193] [2022-10-15 21:11:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:09,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:11,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 21:11:11,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:11,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668348193] [2022-10-15 21:11:11,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668348193] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:11,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097647919] [2022-10-15 21:11:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:11,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:11,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:11,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:11,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 21:11:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:12,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:11:12,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:11:12,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:12,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097647919] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:12,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:12,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2022-10-15 21:11:12,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23219332] [2022-10-15 21:11:12,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:12,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:11:12,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:11:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:12,700 INFO L87 Difference]: Start difference. First operand 380 states and 476 transitions. Second operand has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:11:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:12,761 INFO L93 Difference]: Finished difference Result 593 states and 780 transitions. [2022-10-15 21:11:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:11:12,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2022-10-15 21:11:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:12,769 INFO L225 Difference]: With dead ends: 593 [2022-10-15 21:11:12,769 INFO L226 Difference]: Without dead ends: 592 [2022-10-15 21:11:12,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:12,780 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 196 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:12,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 975 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:11:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-10-15 21:11:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 410. [2022-10-15 21:11:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 316 states have (on average 1.3164556962025316) internal successors, (416), 342 states have internal predecessors, (416), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-15 21:11:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 519 transitions. [2022-10-15 21:11:12,834 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 519 transitions. Word has length 77 [2022-10-15 21:11:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:12,838 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 519 transitions. [2022-10-15 21:11:12,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:11:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 519 transitions. [2022-10-15 21:11:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-15 21:11:12,840 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:12,840 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:12,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:13,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:13,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1578119275, now seen corresponding path program 1 times [2022-10-15 21:11:13,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:13,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814501326] [2022-10-15 21:11:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:13,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:14,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 21:11:14,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:14,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814501326] [2022-10-15 21:11:14,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814501326] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:14,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544423843] [2022-10-15 21:11:14,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:14,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:14,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:14,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:14,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 21:11:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:15,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:11:15,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:11:15,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:15,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544423843] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:15,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:15,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-15 21:11:15,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037340672] [2022-10-15 21:11:15,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:15,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:11:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:15,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:11:15,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:15,586 INFO L87 Difference]: Start difference. First operand 410 states and 519 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:11:15,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:15,660 INFO L93 Difference]: Finished difference Result 516 states and 667 transitions. [2022-10-15 21:11:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:11:15,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2022-10-15 21:11:15,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:15,665 INFO L225 Difference]: With dead ends: 516 [2022-10-15 21:11:15,666 INFO L226 Difference]: Without dead ends: 503 [2022-10-15 21:11:15,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:15,668 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 214 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:15,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 754 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:11:15,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-10-15 21:11:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 413. [2022-10-15 21:11:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 318 states have (on average 1.3081761006289307) internal successors, (416), 345 states have internal predecessors, (416), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 21:11:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 521 transitions. [2022-10-15 21:11:15,704 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 521 transitions. Word has length 79 [2022-10-15 21:11:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:15,705 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 521 transitions. [2022-10-15 21:11:15,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:11:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 521 transitions. [2022-10-15 21:11:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-15 21:11:15,706 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:15,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:15,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:15,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:15,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1890794741, now seen corresponding path program 1 times [2022-10-15 21:11:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:15,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821585418] [2022-10-15 21:11:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:15,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 21:11:17,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821585418] [2022-10-15 21:11:17,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821585418] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:17,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814480884] [2022-10-15 21:11:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:17,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:17,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:17,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:17,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 21:11:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:18,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:11:18,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:11:18,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:18,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814480884] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:18,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:18,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2022-10-15 21:11:18,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377135504] [2022-10-15 21:11:18,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:18,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:11:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:18,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:11:18,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:18,450 INFO L87 Difference]: Start difference. First operand 413 states and 521 transitions. Second operand has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:11:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:18,495 INFO L93 Difference]: Finished difference Result 425 states and 537 transitions. [2022-10-15 21:11:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:11:18,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2022-10-15 21:11:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:18,500 INFO L225 Difference]: With dead ends: 425 [2022-10-15 21:11:18,500 INFO L226 Difference]: Without dead ends: 424 [2022-10-15 21:11:18,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:18,502 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 195 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:18,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 680 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:11:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-10-15 21:11:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 412. [2022-10-15 21:11:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 318 states have (on average 1.3050314465408805) internal successors, (415), 344 states have internal predecessors, (415), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 21:11:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 520 transitions. [2022-10-15 21:11:18,540 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 520 transitions. Word has length 78 [2022-10-15 21:11:18,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:18,544 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 520 transitions. [2022-10-15 21:11:18,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:11:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 520 transitions. [2022-10-15 21:11:18,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-15 21:11:18,550 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:18,550 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:18,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:18,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:18,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1308132294, now seen corresponding path program 1 times [2022-10-15 21:11:18,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:18,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209111219] [2022-10-15 21:11:18,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:18,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 21:11:20,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:20,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209111219] [2022-10-15 21:11:20,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209111219] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:20,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961778859] [2022-10-15 21:11:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:20,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:20,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:20,531 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:20,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 21:11:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:21,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:11:21,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-15 21:11:21,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:21,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961778859] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:21,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:21,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-15 21:11:21,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876156148] [2022-10-15 21:11:21,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:21,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:11:21,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:11:21,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:21,327 INFO L87 Difference]: Start difference. First operand 412 states and 520 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:11:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:21,386 INFO L93 Difference]: Finished difference Result 928 states and 1192 transitions. [2022-10-15 21:11:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:11:21,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-10-15 21:11:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:21,391 INFO L225 Difference]: With dead ends: 928 [2022-10-15 21:11:21,391 INFO L226 Difference]: Without dead ends: 528 [2022-10-15 21:11:21,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:21,394 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 112 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:21,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 900 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:11:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-10-15 21:11:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 443. [2022-10-15 21:11:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 349 states have (on average 1.2979942693409743) internal successors, (453), 375 states have internal predecessors, (453), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 21:11:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 558 transitions. [2022-10-15 21:11:21,430 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 558 transitions. Word has length 89 [2022-10-15 21:11:21,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:21,430 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 558 transitions. [2022-10-15 21:11:21,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:11:21,431 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 558 transitions. [2022-10-15 21:11:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-15 21:11:21,432 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:21,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:21,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:21,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:21,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:21,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1555259820, now seen corresponding path program 1 times [2022-10-15 21:11:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:21,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731837549] [2022-10-15 21:11:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:21,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:23,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:23,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-15 21:11:23,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:23,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731837549] [2022-10-15 21:11:23,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731837549] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:23,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712845988] [2022-10-15 21:11:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:23,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:23,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:23,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:23,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 21:11:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:23,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:11:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 21:11:24,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:24,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712845988] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:24,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:24,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-15 21:11:24,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619160157] [2022-10-15 21:11:24,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:11:24,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:11:24,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:24,010 INFO L87 Difference]: Start difference. First operand 443 states and 558 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:11:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:24,091 INFO L93 Difference]: Finished difference Result 1082 states and 1396 transitions. [2022-10-15 21:11:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:11:24,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-10-15 21:11:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:24,098 INFO L225 Difference]: With dead ends: 1082 [2022-10-15 21:11:24,099 INFO L226 Difference]: Without dead ends: 651 [2022-10-15 21:11:24,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:24,102 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 180 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:24,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 904 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:11:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-10-15 21:11:24,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 519. [2022-10-15 21:11:24,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 418 states have (on average 1.291866028708134) internal successors, (540), 444 states have internal predecessors, (540), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2022-10-15 21:11:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 659 transitions. [2022-10-15 21:11:24,151 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 659 transitions. Word has length 91 [2022-10-15 21:11:24,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:24,151 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 659 transitions. [2022-10-15 21:11:24,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:11:24,152 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 659 transitions. [2022-10-15 21:11:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-15 21:11:24,154 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:24,154 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:24,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:24,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:24,370 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash -541807490, now seen corresponding path program 1 times [2022-10-15 21:11:24,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:24,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456746686] [2022-10-15 21:11:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:24,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:25,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:25,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 21:11:26,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:26,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456746686] [2022-10-15 21:11:26,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456746686] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:26,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686897568] [2022-10-15 21:11:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:26,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:26,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:26,111 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:26,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 21:11:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:26,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:11:26,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 21:11:26,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:26,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686897568] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:26,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:26,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-15 21:11:26,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529288832] [2022-10-15 21:11:26,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:26,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:11:26,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:26,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:11:26,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:26,803 INFO L87 Difference]: Start difference. First operand 519 states and 659 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:11:26,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:26,910 INFO L93 Difference]: Finished difference Result 1257 states and 1623 transitions. [2022-10-15 21:11:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:11:26,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 93 [2022-10-15 21:11:26,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:26,917 INFO L225 Difference]: With dead ends: 1257 [2022-10-15 21:11:26,918 INFO L226 Difference]: Without dead ends: 750 [2022-10-15 21:11:26,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:11:26,921 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 191 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:26,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1094 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:11:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-10-15 21:11:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 565. [2022-10-15 21:11:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 464 states have (on average 1.2801724137931034) internal successors, (594), 490 states have internal predecessors, (594), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2022-10-15 21:11:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 713 transitions. [2022-10-15 21:11:26,982 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 713 transitions. Word has length 93 [2022-10-15 21:11:26,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:26,983 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 713 transitions. [2022-10-15 21:11:26,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-15 21:11:26,983 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 713 transitions. [2022-10-15 21:11:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-15 21:11:26,986 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:26,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:27,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:27,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 21:11:27,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:27,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash -650541876, now seen corresponding path program 1 times [2022-10-15 21:11:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:27,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719994239] [2022-10-15 21:11:27,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:27,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:28,730 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 21:11:28,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:28,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719994239] [2022-10-15 21:11:28,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719994239] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:28,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419054798] [2022-10-15 21:11:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:28,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:28,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:28,733 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:28,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 21:11:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:29,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:11:29,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:11:29,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:11:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:11:29,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419054798] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:11:29,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:11:29,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 15 [2022-10-15 21:11:29,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759814433] [2022-10-15 21:11:29,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:11:29,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 21:11:29,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 21:11:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-10-15 21:11:29,666 INFO L87 Difference]: Start difference. First operand 565 states and 713 transitions. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-15 21:11:34,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:34,403 INFO L93 Difference]: Finished difference Result 2247 states and 3002 transitions. [2022-10-15 21:11:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-15 21:11:34,404 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-10-15 21:11:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:34,418 INFO L225 Difference]: With dead ends: 2247 [2022-10-15 21:11:34,418 INFO L226 Difference]: Without dead ends: 1692 [2022-10-15 21:11:34,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-10-15 21:11:34,422 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 884 mSDsluCounter, 5687 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 6382 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:34,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 6382 Invalid, 2693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-10-15 21:11:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-10-15 21:11:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 919. [2022-10-15 21:11:34,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 815 states have (on average 1.2699386503067485) internal successors, (1035), 842 states have internal predecessors, (1035), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (69), 59 states have call predecessors, (69), 59 states have call successors, (69) [2022-10-15 21:11:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1164 transitions. [2022-10-15 21:11:34,510 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1164 transitions. Word has length 95 [2022-10-15 21:11:34,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:34,510 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1164 transitions. [2022-10-15 21:11:34,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-15 21:11:34,511 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1164 transitions. [2022-10-15 21:11:34,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-15 21:11:34,513 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:34,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:34,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-15 21:11:34,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:34,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1723685490, now seen corresponding path program 1 times [2022-10-15 21:11:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:34,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049994136] [2022-10-15 21:11:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-15 21:11:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-15 21:11:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-15 21:11:35,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:35,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049994136] [2022-10-15 21:11:35,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049994136] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:35,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510196143] [2022-10-15 21:11:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:35,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:35,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:35,669 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:35,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 21:11:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:36,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:11:36,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:11:36,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:36,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510196143] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:36,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:36,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-10-15 21:11:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229805468] [2022-10-15 21:11:36,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:36,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:11:36,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:11:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:11:36,439 INFO L87 Difference]: Start difference. First operand 919 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-15 21:11:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:36,685 INFO L93 Difference]: Finished difference Result 1918 states and 2446 transitions. [2022-10-15 21:11:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:11:36,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-10-15 21:11:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:36,692 INFO L225 Difference]: With dead ends: 1918 [2022-10-15 21:11:36,693 INFO L226 Difference]: Without dead ends: 996 [2022-10-15 21:11:36,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:11:36,696 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 69 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:36,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 904 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:11:36,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-10-15 21:11:36,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 912. [2022-10-15 21:11:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 808 states have (on average 1.2512376237623761) internal successors, (1011), 834 states have internal predecessors, (1011), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (69), 59 states have call predecessors, (69), 59 states have call successors, (69) [2022-10-15 21:11:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1140 transitions. [2022-10-15 21:11:36,777 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1140 transitions. Word has length 113 [2022-10-15 21:11:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:36,778 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1140 transitions. [2022-10-15 21:11:36,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-15 21:11:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1140 transitions. [2022-10-15 21:11:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-15 21:11:36,781 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:36,781 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:36,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:36,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-15 21:11:36,994 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1580494936, now seen corresponding path program 1 times [2022-10-15 21:11:36,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:36,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953626762] [2022-10-15 21:11:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:36,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:11:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-15 21:11:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:11:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:11:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-15 21:11:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-15 21:11:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-15 21:11:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:38,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:11:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-15 21:11:38,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:11:38,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953626762] [2022-10-15 21:11:38,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953626762] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:11:38,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198081231] [2022-10-15 21:11:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:38,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:11:38,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:11:38,035 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:11:38,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 21:11:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:11:38,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:11:38,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:11:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 21:11:38,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:11:38,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198081231] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:11:38,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:11:38,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-10-15 21:11:38,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411265571] [2022-10-15 21:11:38,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:11:38,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:11:38,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:11:38,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:11:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:11:38,877 INFO L87 Difference]: Start difference. First operand 912 states and 1140 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-15 21:11:39,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:11:39,038 INFO L93 Difference]: Finished difference Result 2368 states and 2986 transitions. [2022-10-15 21:11:39,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:11:39,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2022-10-15 21:11:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:11:39,055 INFO L225 Difference]: With dead ends: 2368 [2022-10-15 21:11:39,056 INFO L226 Difference]: Without dead ends: 1468 [2022-10-15 21:11:39,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:11:39,065 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 179 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:11:39,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1062 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:11:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2022-10-15 21:11:39,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1290. [2022-10-15 21:11:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1186 states have (on average 1.2360876897133222) internal successors, (1466), 1212 states have internal predecessors, (1466), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (69), 59 states have call predecessors, (69), 59 states have call successors, (69) [2022-10-15 21:11:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1595 transitions. [2022-10-15 21:11:39,180 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1595 transitions. Word has length 131 [2022-10-15 21:11:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:11:39,181 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1595 transitions. [2022-10-15 21:11:39,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-15 21:11:39,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1595 transitions. [2022-10-15 21:11:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-15 21:11:39,185 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:11:39,185 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:11:39,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 21:11:39,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-15 21:11:39,400 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-15 21:11:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:11:39,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1767051934, now seen corresponding path program 1 times [2022-10-15 21:11:39,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:11:39,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040427683] [2022-10-15 21:11:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:11:39,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:11:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat