/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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 13:02:27,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 13:02:27,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 13:02:27,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 13:02:27,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 13:02:27,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 13:02:27,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 13:02:27,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 13:02:27,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 13:02:27,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 13:02:27,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 13:02:27,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 13:02:27,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 13:02:27,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 13:02:27,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 13:02:27,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 13:02:27,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 13:02:27,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 13:02:27,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 13:02:27,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 13:02:27,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 13:02:27,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 13:02:27,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 13:02:27,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 13:02:27,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 13:02:27,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 13:02:27,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 13:02:27,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 13:02:27,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 13:02:27,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 13:02:27,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 13:02:27,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 13:02:27,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 13:02:27,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 13:02:27,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 13:02:27,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 13:02:27,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 13:02:27,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 13:02:27,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 13:02:27,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 13:02:27,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 13:02:27,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 13:02:27,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 13:02:27,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 13:02:27,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 13:02:27,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 13:02:27,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 13:02:27,728 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 13:02:27,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 13:02:27,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 13:02:27,731 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 13:02:27,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 13:02:27,732 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 13:02:27,732 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 13:02:27,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 13:02:27,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 13:02:27,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 13:02:27,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 13:02:27,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 13:02:27,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 13:02:27,734 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 13:02:27,734 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 13:02:27,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 13:02:27,734 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 13:02:27,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 13:02:27,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 13:02:27,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 13:02:27,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 13:02:27,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:02:27,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 13:02:27,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 13:02:27,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 13:02:27,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 13:02:27,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 13:02:27,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 13:02:27,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 13:02:28,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 13:02:28,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 13:02:28,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 13:02:28,170 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 13:02:28,171 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 13:02:28,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-10-16 13:02:28,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3342d9529/ee3683d4f7df4a8ebc98401de21004d5/FLAGa9853b37b [2022-10-16 13:02:29,220 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 13:02:29,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-10-16 13:02:29,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3342d9529/ee3683d4f7df4a8ebc98401de21004d5/FLAGa9853b37b [2022-10-16 13:02:29,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3342d9529/ee3683d4f7df4a8ebc98401de21004d5 [2022-10-16 13:02:29,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 13:02:29,682 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 13:02:29,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 13:02:29,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 13:02:29,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 13:02:29,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:02:29" (1/1) ... [2022-10-16 13:02:29,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250e0b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:29, skipping insertion in model container [2022-10-16 13:02:29,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:02:29" (1/1) ... [2022-10-16 13:02:29,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 13:02:29,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 13:02:30,918 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2022-10-16 13:02:31,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:02:31,509 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 13:02:31,697 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2022-10-16 13:02:31,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:02:32,058 INFO L208 MainTranslator]: Completed translation [2022-10-16 13:02:32,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32 WrapperNode [2022-10-16 13:02:32,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 13:02:32,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 13:02:32,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 13:02:32,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 13:02:32,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,271 INFO L138 Inliner]: procedures = 169, calls = 721, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 2065 [2022-10-16 13:02:32,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 13:02:32,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 13:02:32,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 13:02:32,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 13:02:32,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,512 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 13:02:32,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 13:02:32,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 13:02:32,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 13:02:32,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (1/1) ... [2022-10-16 13:02:32,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:02:32,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:02:32,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 13:02:32,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 13:02:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-16 13:02:32,669 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-16 13:02:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 13:02:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2022-10-16 13:02:32,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2022-10-16 13:02:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2022-10-16 13:02:32,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2022-10-16 13:02:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-10-16 13:02:32,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-10-16 13:02:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-10-16 13:02:32,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-10-16 13:02:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 13:02:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 13:02:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-16 13:02:32,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-16 13:02:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 13:02:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-10-16 13:02:32,671 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-10-16 13:02:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_bulk_callback [2022-10-16 13:02:32,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_bulk_callback [2022-10-16 13:02:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-10-16 13:02:32,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-10-16 13:02:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-10-16 13:02:32,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-10-16 13:02:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2022-10-16 13:02:32,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2022-10-16 13:02:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-10-16 13:02:32,673 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-10-16 13:02:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-16 13:02:32,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-16 13:02:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-16 13:02:32,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-16 13:02:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-10-16 13:02:32,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-10-16 13:02:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-16 13:02:32,674 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-16 13:02:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-10-16 13:02:32,674 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-10-16 13:02:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-16 13:02:32,674 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-16 13:02:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-10-16 13:02:32,674 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-10-16 13:02:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 13:02:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-16 13:02:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-16 13:02:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-16 13:02:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-16 13:02:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 13:02:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 13:02:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-16 13:02:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-16 13:02:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2022-10-16 13:02:32,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2022-10-16 13:02:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 13:02:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-10-16 13:02:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-10-16 13:02:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-10-16 13:02:32,678 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-10-16 13:02:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 13:02:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-10-16 13:02:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-10-16 13:02:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-16 13:02:32,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-16 13:02:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 13:02:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 13:02:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2022-10-16 13:02:32,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2022-10-16 13:02:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-16 13:02:32,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-16 13:02:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-16 13:02:32,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-16 13:02:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-10-16 13:02:32,682 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-10-16 13:02:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 13:02:32,683 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_disconnect [2022-10-16 13:02:32,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_disconnect [2022-10-16 13:02:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-16 13:02:32,684 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-16 13:02:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-10-16 13:02:32,684 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-10-16 13:02:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_interrupt_callback [2022-10-16 13:02:32,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_interrupt_callback [2022-10-16 13:02:32,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-10-16 13:02:32,684 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-10-16 13:02:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 13:02:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-10-16 13:02:32,685 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-10-16 13:02:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 13:02:32,685 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_rx_err [2022-10-16 13:02:32,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_rx_err [2022-10-16 13:02:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-16 13:02:32,686 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-16 13:02:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-10-16 13:02:32,686 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-10-16 13:02:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-16 13:02:32,686 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-16 13:02:32,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-10-16 13:02:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-10-16 13:02:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-16 13:02:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-16 13:02:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-10-16 13:02:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-10-16 13:02:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-10-16 13:02:32,687 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-10-16 13:02:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 13:02:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-10-16 13:02:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-10-16 13:02:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 13:02:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-16 13:02:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-16 13:02:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 13:02:32,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 13:02:33,230 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 13:02:33,234 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 13:02:33,592 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-16 13:02:34,563 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-10-16 13:02:37,773 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 13:02:37,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 13:02:37,800 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 13:02:37,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:02:37 BoogieIcfgContainer [2022-10-16 13:02:37,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 13:02:37,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 13:02:37,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 13:02:37,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 13:02:37,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:02:29" (1/3) ... [2022-10-16 13:02:37,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b8e43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:02:37, skipping insertion in model container [2022-10-16 13:02:37,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:32" (2/3) ... [2022-10-16 13:02:37,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b8e43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:02:37, skipping insertion in model container [2022-10-16 13:02:37,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:02:37" (3/3) ... [2022-10-16 13:02:37,830 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-10-16 13:02:37,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 13:02:37,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-10-16 13:02:37,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 13:02:37,989 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;@45f2935c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 13:02:37,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-10-16 13:02:38,006 INFO L276 IsEmpty]: Start isEmpty. Operand has 748 states, 528 states have (on average 1.3958333333333333) internal successors, (737), 589 states have internal predecessors, (737), 135 states have call successors, (135), 48 states have call predecessors, (135), 46 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) [2022-10-16 13:02:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 13:02:38,020 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:02:38,021 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 13:02:38,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:02:38,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:02:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash 273329453, now seen corresponding path program 1 times [2022-10-16 13:02:38,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:02:38,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272934026] [2022-10-16 13:02:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:02:38,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:02:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:02:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:02:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:02:38,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:02:38,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272934026] [2022-10-16 13:02:38,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272934026] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:02:38,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:02:38,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:02:38,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538190663] [2022-10-16 13:02:38,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:02:38,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:02:38,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:02:38,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:02:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:02:38,819 INFO L87 Difference]: Start difference. First operand has 748 states, 528 states have (on average 1.3958333333333333) internal successors, (737), 589 states have internal predecessors, (737), 135 states have call successors, (135), 48 states have call predecessors, (135), 46 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 13:02:41,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:02:41,845 INFO L93 Difference]: Finished difference Result 1817 states and 2506 transitions. [2022-10-16 13:02:41,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:02:41,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-10-16 13:02:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:02:41,895 INFO L225 Difference]: With dead ends: 1817 [2022-10-16 13:02:41,896 INFO L226 Difference]: Without dead ends: 1019 [2022-10-16 13:02:41,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:02:41,925 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 573 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-16 13:02:41,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 2175 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-10-16 13:02:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2022-10-16 13:02:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 911. [2022-10-16 13:02:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 663 states have (on average 1.3288084464555052) internal successors, (881), 704 states have internal predecessors, (881), 155 states have call successors, (155), 63 states have call predecessors, (155), 63 states have return successors, (155), 150 states have call predecessors, (155), 155 states have call successors, (155) [2022-10-16 13:02:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1191 transitions. [2022-10-16 13:02:42,113 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1191 transitions. Word has length 28 [2022-10-16 13:02:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:02:42,114 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1191 transitions. [2022-10-16 13:02:42,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 13:02:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1191 transitions. [2022-10-16 13:02:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 13:02:42,117 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:02:42,117 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-16 13:02:42,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 13:02:42,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:02:42,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:02:42,118 INFO L85 PathProgramCache]: Analyzing trace with hash 133922023, now seen corresponding path program 1 times [2022-10-16 13:02:42,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:02:42,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947593978] [2022-10-16 13:02:42,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:02:42,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:02:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:02:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:02:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:42,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 13:02:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:02:42,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:02:42,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947593978] [2022-10-16 13:02:42,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947593978] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:02:42,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:02:42,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:02:42,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750503834] [2022-10-16 13:02:42,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:02:42,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:02:42,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:02:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:02:42,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:02:42,373 INFO L87 Difference]: Start difference. First operand 911 states and 1191 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 13:02:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:02:46,741 INFO L93 Difference]: Finished difference Result 2671 states and 3561 transitions. [2022-10-16 13:02:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:02:46,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-10-16 13:02:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:02:46,757 INFO L225 Difference]: With dead ends: 2671 [2022-10-16 13:02:46,757 INFO L226 Difference]: Without dead ends: 1767 [2022-10-16 13:02:46,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:02:46,762 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 1133 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:02:46,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 3669 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-10-16 13:02:46,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-10-16 13:02:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1515. [2022-10-16 13:02:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1120 states have (on average 1.3410714285714285) internal successors, (1502), 1173 states have internal predecessors, (1502), 258 states have call successors, (258), 107 states have call predecessors, (258), 107 states have return successors, (258), 248 states have call predecessors, (258), 258 states have call successors, (258) [2022-10-16 13:02:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2018 transitions. [2022-10-16 13:02:46,885 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2018 transitions. Word has length 31 [2022-10-16 13:02:46,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:02:46,886 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2018 transitions. [2022-10-16 13:02:46,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 13:02:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2018 transitions. [2022-10-16 13:02:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-16 13:02:46,889 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:02:46,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:02:46,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 13:02:46,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:02:46,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:02:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2025977158, now seen corresponding path program 1 times [2022-10-16 13:02:46,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:02:46,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392911771] [2022-10-16 13:02:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:02:46,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:02:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:02:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:02:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:02:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 13:02:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:02:47,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:02:47,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392911771] [2022-10-16 13:02:47,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392911771] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:02:47,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:02:47,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:02:47,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628208332] [2022-10-16 13:02:47,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:02:47,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:02:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:02:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:02:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:02:47,116 INFO L87 Difference]: Start difference. First operand 1515 states and 2018 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:02:50,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:02:50,195 INFO L93 Difference]: Finished difference Result 3239 states and 4374 transitions. [2022-10-16 13:02:50,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:02:50,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-10-16 13:02:50,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:02:50,208 INFO L225 Difference]: With dead ends: 3239 [2022-10-16 13:02:50,209 INFO L226 Difference]: Without dead ends: 1740 [2022-10-16 13:02:50,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:02:50,261 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 290 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:02:50,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 2457 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-16 13:02:50,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2022-10-16 13:02:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1509. [2022-10-16 13:02:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1114 states have (on average 1.341113105924596) internal successors, (1494), 1168 states have internal predecessors, (1494), 258 states have call successors, (258), 107 states have call predecessors, (258), 107 states have return successors, (258), 247 states have call predecessors, (258), 258 states have call successors, (258) [2022-10-16 13:02:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2010 transitions. [2022-10-16 13:02:50,382 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2010 transitions. Word has length 50 [2022-10-16 13:02:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:02:50,383 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2010 transitions. [2022-10-16 13:02:50,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:02:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2010 transitions. [2022-10-16 13:02:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 13:02:50,393 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:02:50,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-10-16 13:02:50,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 13:02:50,394 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:02:50,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:02:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash 410853253, now seen corresponding path program 1 times [2022-10-16 13:02:50,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:02:50,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688452224] [2022-10-16 13:02:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:02:50,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:02:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:02:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:02:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:02:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:02:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:50,709 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:02:50,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:02:50,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688452224] [2022-10-16 13:02:50,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688452224] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:02:50,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:02:50,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:02:50,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583276856] [2022-10-16 13:02:50,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:02:50,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:02:50,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:02:50,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:02:50,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:02:50,712 INFO L87 Difference]: Start difference. First operand 1509 states and 2010 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:02:55,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:02:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:02:55,554 INFO L93 Difference]: Finished difference Result 3258 states and 4423 transitions. [2022-10-16 13:02:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:02:55,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-10-16 13:02:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:02:55,655 INFO L225 Difference]: With dead ends: 3258 [2022-10-16 13:02:55,655 INFO L226 Difference]: Without dead ends: 3254 [2022-10-16 13:02:55,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:02:55,658 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 1342 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 369 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:02:55,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2254 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 713 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-10-16 13:02:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2022-10-16 13:02:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 2881. [2022-10-16 13:02:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2146 states have (on average 1.3383038210624418) internal successors, (2872), 2224 states have internal predecessors, (2872), 498 states have call successors, (498), 207 states have call predecessors, (498), 207 states have return successors, (498), 477 states have call predecessors, (498), 498 states have call successors, (498) [2022-10-16 13:02:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 3868 transitions. [2022-10-16 13:02:55,875 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 3868 transitions. Word has length 54 [2022-10-16 13:02:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:02:55,877 INFO L495 AbstractCegarLoop]: Abstraction has 2881 states and 3868 transitions. [2022-10-16 13:02:55,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:02:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 3868 transitions. [2022-10-16 13:02:55,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-16 13:02:55,879 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:02:55,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-10-16 13:02:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 13:02:55,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:02:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:02:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash -293352561, now seen corresponding path program 1 times [2022-10-16 13:02:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:02:55,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254743082] [2022-10-16 13:02:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:02:55,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:02:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:56,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:02:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:56,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:02:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:56,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:02:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:02:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:56,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:02:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:02:56,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:02:56,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254743082] [2022-10-16 13:02:56,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254743082] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:02:56,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:02:56,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:02:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272536702] [2022-10-16 13:02:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:02:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:02:56,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:02:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:02:56,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:02:56,311 INFO L87 Difference]: Start difference. First operand 2881 states and 3868 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 13:02:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:02:58,653 INFO L93 Difference]: Finished difference Result 5036 states and 6907 transitions. [2022-10-16 13:02:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:02:58,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 57 [2022-10-16 13:02:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:02:58,690 INFO L225 Difference]: With dead ends: 5036 [2022-10-16 13:02:58,690 INFO L226 Difference]: Without dead ends: 5028 [2022-10-16 13:02:58,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:02:58,695 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 1905 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2002 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:02:58,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2002 Valid, 2401 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-16 13:02:58,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-10-16 13:02:58,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4342. [2022-10-16 13:02:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4342 states, 3247 states have (on average 1.3329226978749615) internal successors, (4328), 3350 states have internal predecessors, (4328), 753 states have call successors, (753), 312 states have call predecessors, (753), 312 states have return successors, (753), 721 states have call predecessors, (753), 753 states have call successors, (753) [2022-10-16 13:02:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4342 states to 4342 states and 5834 transitions. [2022-10-16 13:02:59,008 INFO L78 Accepts]: Start accepts. Automaton has 4342 states and 5834 transitions. Word has length 57 [2022-10-16 13:02:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:02:59,009 INFO L495 AbstractCegarLoop]: Abstraction has 4342 states and 5834 transitions. [2022-10-16 13:02:59,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 13:02:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4342 states and 5834 transitions. [2022-10-16 13:02:59,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-16 13:02:59,012 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:02:59,013 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-10-16 13:02:59,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 13:02:59,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:02:59,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:02:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash 242581882, now seen corresponding path program 1 times [2022-10-16 13:02:59,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:02:59,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638481936] [2022-10-16 13:02:59,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:02:59,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:02:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:02:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:02:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:02:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:02:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-16 13:02:59,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:02:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:02:59,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638481936] [2022-10-16 13:02:59,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638481936] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:02:59,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:02:59,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:02:59,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597242771] [2022-10-16 13:02:59,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:02:59,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:02:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:02:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:02:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:02:59,307 INFO L87 Difference]: Start difference. First operand 4342 states and 5834 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-16 13:03:01,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:04,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:04,260 INFO L93 Difference]: Finished difference Result 8323 states and 11238 transitions. [2022-10-16 13:03:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:03:04,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2022-10-16 13:03:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:04,289 INFO L225 Difference]: With dead ends: 8323 [2022-10-16 13:03:04,290 INFO L226 Difference]: Without dead ends: 3999 [2022-10-16 13:03:04,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:03:04,307 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 537 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:04,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 2164 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-10-16 13:03:04,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2022-10-16 13:03:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3588. [2022-10-16 13:03:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 2716 states have (on average 1.3298969072164948) internal successors, (3612), 2796 states have internal predecessors, (3612), 583 states have call successors, (583), 259 states have call predecessors, (583), 259 states have return successors, (583), 560 states have call predecessors, (583), 583 states have call successors, (583) [2022-10-16 13:03:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 4778 transitions. [2022-10-16 13:03:04,506 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 4778 transitions. Word has length 68 [2022-10-16 13:03:04,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:04,507 INFO L495 AbstractCegarLoop]: Abstraction has 3588 states and 4778 transitions. [2022-10-16 13:03:04,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-16 13:03:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 4778 transitions. [2022-10-16 13:03:04,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 13:03:04,510 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:04,510 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-10-16 13:03:04,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 13:03:04,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -75375469, now seen corresponding path program 1 times [2022-10-16 13:03:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654949772] [2022-10-16 13:03:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:03:05,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:05,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654949772] [2022-10-16 13:03:05,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654949772] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:05,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445461896] [2022-10-16 13:03:05,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:05,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:05,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:05,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:03:05,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 13:03:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:05,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:03:05,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:05,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:03:05,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445461896] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:05,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:03:05,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-16 13:03:05,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975307113] [2022-10-16 13:03:05,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:05,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:03:05,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:05,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:03:05,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:05,553 INFO L87 Difference]: Start difference. First operand 3588 states and 4778 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 13:03:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:06,129 INFO L93 Difference]: Finished difference Result 6529 states and 8721 transitions. [2022-10-16 13:03:06,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:03:06,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2022-10-16 13:03:06,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:06,152 INFO L225 Difference]: With dead ends: 6529 [2022-10-16 13:03:06,153 INFO L226 Difference]: Without dead ends: 3242 [2022-10-16 13:03:06,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:06,166 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 890 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:06,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1438 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 13:03:06,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2022-10-16 13:03:06,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 3227. [2022-10-16 13:03:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 2438 states have (on average 1.3314191960623463) internal successors, (3246), 2517 states have internal predecessors, (3246), 532 states have call successors, (532), 227 states have call predecessors, (532), 227 states have return successors, (532), 510 states have call predecessors, (532), 532 states have call successors, (532) [2022-10-16 13:03:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4310 transitions. [2022-10-16 13:03:06,356 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4310 transitions. Word has length 70 [2022-10-16 13:03:06,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:06,357 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 4310 transitions. [2022-10-16 13:03:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 13:03:06,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4310 transitions. [2022-10-16 13:03:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 13:03:06,359 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:06,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-10-16 13:03:06,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 13:03:06,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:06,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:06,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:06,574 INFO L85 PathProgramCache]: Analyzing trace with hash -52471188, now seen corresponding path program 1 times [2022-10-16 13:03:06,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:06,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519694314] [2022-10-16 13:03:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:06,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:06,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:03:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:06,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519694314] [2022-10-16 13:03:06,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519694314] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:06,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771373627] [2022-10-16 13:03:06,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:06,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:06,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:06,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:03:06,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 13:03:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:07,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:03:07,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:07,378 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 13:03:07,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:03:07,466 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:03:07,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771373627] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:03:07,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:03:07,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-16 13:03:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370486585] [2022-10-16 13:03:07,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:03:07,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:03:07,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:03:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:03:07,469 INFO L87 Difference]: Start difference. First operand 3227 states and 4310 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 13:03:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:12,238 INFO L93 Difference]: Finished difference Result 3612 states and 4864 transitions. [2022-10-16 13:03:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:03:12,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 70 [2022-10-16 13:03:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:12,261 INFO L225 Difference]: With dead ends: 3612 [2022-10-16 13:03:12,261 INFO L226 Difference]: Without dead ends: 3610 [2022-10-16 13:03:12,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:03:12,265 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 3783 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 1111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3930 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:12,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3930 Valid, 3049 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-10-16 13:03:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2022-10-16 13:03:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 3225. [2022-10-16 13:03:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 2438 states have (on average 1.3297785069729287) internal successors, (3242), 2515 states have internal predecessors, (3242), 532 states have call successors, (532), 227 states have call predecessors, (532), 227 states have return successors, (532), 510 states have call predecessors, (532), 532 states have call successors, (532) [2022-10-16 13:03:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4306 transitions. [2022-10-16 13:03:12,481 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4306 transitions. Word has length 70 [2022-10-16 13:03:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:12,483 INFO L495 AbstractCegarLoop]: Abstraction has 3225 states and 4306 transitions. [2022-10-16 13:03:12,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 13:03:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4306 transitions. [2022-10-16 13:03:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-16 13:03:12,488 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:12,489 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-10-16 13:03:12,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 13:03:12,704 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,SelfDestructingSolverStorable7 [2022-10-16 13:03:12,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1626605315, now seen corresponding path program 1 times [2022-10-16 13:03:12,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:12,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776455069] [2022-10-16 13:03:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:03:13,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:13,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776455069] [2022-10-16 13:03:13,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776455069] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:13,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979559271] [2022-10-16 13:03:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:13,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:13,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:13,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:03:13,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 13:03:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:13,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:03:13,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 13:03:13,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:03:13,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979559271] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:13,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:03:13,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-16 13:03:13,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287782145] [2022-10-16 13:03:13,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:13,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:03:13,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:13,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:03:13,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:13,486 INFO L87 Difference]: Start difference. First operand 3225 states and 4306 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:14,490 INFO L93 Difference]: Finished difference Result 4942 states and 6574 transitions. [2022-10-16 13:03:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:03:14,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 71 [2022-10-16 13:03:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:14,503 INFO L225 Difference]: With dead ends: 4942 [2022-10-16 13:03:14,503 INFO L226 Difference]: Without dead ends: 2018 [2022-10-16 13:03:14,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:14,514 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 1621 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:14,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1351 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-16 13:03:14,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-10-16 13:03:14,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1977. [2022-10-16 13:03:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1498 states have (on average 1.3184245660881175) internal successors, (1975), 1549 states have internal predecessors, (1975), 311 states have call successors, (311), 142 states have call predecessors, (311), 142 states have return successors, (311), 299 states have call predecessors, (311), 311 states have call successors, (311) [2022-10-16 13:03:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2597 transitions. [2022-10-16 13:03:14,624 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2597 transitions. Word has length 71 [2022-10-16 13:03:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:14,625 INFO L495 AbstractCegarLoop]: Abstraction has 1977 states and 2597 transitions. [2022-10-16 13:03:14,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:14,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2597 transitions. [2022-10-16 13:03:14,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-16 13:03:14,627 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:14,627 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:03:14,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 13:03:14,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:14,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:14,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1372175497, now seen corresponding path program 1 times [2022-10-16 13:03:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:14,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416018650] [2022-10-16 13:03:14,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:14,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:15,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:03:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-16 13:03:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:15,064 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 13:03:15,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:15,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416018650] [2022-10-16 13:03:15,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416018650] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:15,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:15,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:03:15,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939154512] [2022-10-16 13:03:15,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:15,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:03:15,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:03:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:15,067 INFO L87 Difference]: Start difference. First operand 1977 states and 2597 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 13:03:22,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:22,576 INFO L93 Difference]: Finished difference Result 6104 states and 8160 transitions. [2022-10-16 13:03:22,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:03:22,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2022-10-16 13:03:22,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:22,602 INFO L225 Difference]: With dead ends: 6104 [2022-10-16 13:03:22,602 INFO L226 Difference]: Without dead ends: 4426 [2022-10-16 13:03:22,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:03:22,611 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1370 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:22,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 5155 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-10-16 13:03:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2022-10-16 13:03:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 1985. [2022-10-16 13:03:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1506 states have (on average 1.3167330677290836) internal successors, (1983), 1557 states have internal predecessors, (1983), 311 states have call successors, (311), 142 states have call predecessors, (311), 142 states have return successors, (311), 299 states have call predecessors, (311), 311 states have call successors, (311) [2022-10-16 13:03:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2605 transitions. [2022-10-16 13:03:22,810 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2605 transitions. Word has length 74 [2022-10-16 13:03:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:22,811 INFO L495 AbstractCegarLoop]: Abstraction has 1985 states and 2605 transitions. [2022-10-16 13:03:22,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 13:03:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2605 transitions. [2022-10-16 13:03:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 13:03:22,813 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:22,813 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-10-16 13:03:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-16 13:03:22,813 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1114844302, now seen corresponding path program 1 times [2022-10-16 13:03:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:22,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968822987] [2022-10-16 13:03:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:23,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:23,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:23,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:23,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:23,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968822987] [2022-10-16 13:03:23,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968822987] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822808631] [2022-10-16 13:03:23,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:23,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:23,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:23,118 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:03:23,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 13:03:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:23,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:03:23,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 13:03:23,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:03:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:23,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822808631] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:03:23,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:03:23,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-16 13:03:23,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923187193] [2022-10-16 13:03:23,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:03:23,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:03:23,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:23,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:03:23,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:03:23,707 INFO L87 Difference]: Start difference. First operand 1985 states and 2605 transitions. Second operand has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 13:03:30,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:31,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:31,527 INFO L93 Difference]: Finished difference Result 6380 states and 8523 transitions. [2022-10-16 13:03:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 13:03:31,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 72 [2022-10-16 13:03:31,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:31,556 INFO L225 Difference]: With dead ends: 6380 [2022-10-16 13:03:31,556 INFO L226 Difference]: Without dead ends: 6376 [2022-10-16 13:03:31,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-10-16 13:03:31,561 INFO L413 NwaCegarLoop]: 1230 mSDtfsCounter, 5435 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 1640 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5673 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1640 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:31,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5673 Valid, 3908 Invalid, 4457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1640 Valid, 2816 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-10-16 13:03:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6376 states. [2022-10-16 13:03:31,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6376 to 4055. [2022-10-16 13:03:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4055 states, 3100 states have (on average 1.3129032258064517) internal successors, (4070), 3175 states have internal predecessors, (4070), 637 states have call successors, (637), 294 states have call predecessors, (637), 294 states have return successors, (637), 613 states have call predecessors, (637), 637 states have call successors, (637) [2022-10-16 13:03:32,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 5344 transitions. [2022-10-16 13:03:32,019 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 5344 transitions. Word has length 72 [2022-10-16 13:03:32,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:32,019 INFO L495 AbstractCegarLoop]: Abstraction has 4055 states and 5344 transitions. [2022-10-16 13:03:32,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 13:03:32,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 5344 transitions. [2022-10-16 13:03:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 13:03:32,023 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:32,023 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-10-16 13:03:32,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 13:03:32,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:32,238 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash 200436511, now seen corresponding path program 1 times [2022-10-16 13:03:32,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:32,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205422256] [2022-10-16 13:03:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:32,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:32,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:32,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:32,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:32,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205422256] [2022-10-16 13:03:32,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205422256] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:32,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981813645] [2022-10-16 13:03:32,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:32,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:32,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:32,526 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:03:32,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 13:03:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:32,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:03:32,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:33,003 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 13:03:33,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:03:33,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981813645] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:33,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:03:33,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-16 13:03:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167261419] [2022-10-16 13:03:33,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:33,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:03:33,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:33,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:03:33,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:33,010 INFO L87 Difference]: Start difference. First operand 4055 states and 5344 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:34,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:34,298 INFO L93 Difference]: Finished difference Result 8238 states and 10855 transitions. [2022-10-16 13:03:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:03:34,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 73 [2022-10-16 13:03:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:34,333 INFO L225 Difference]: With dead ends: 8238 [2022-10-16 13:03:34,334 INFO L226 Difference]: Without dead ends: 8234 [2022-10-16 13:03:34,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:34,339 INFO L413 NwaCegarLoop]: 1274 mSDtfsCounter, 1631 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:34,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 2389 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 13:03:34,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8234 states. [2022-10-16 13:03:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8234 to 7941. [2022-10-16 13:03:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7941 states, 6080 states have (on average 1.3121710526315788) internal successors, (7978), 6205 states have internal predecessors, (7978), 1257 states have call successors, (1257), 580 states have call predecessors, (1257), 580 states have return successors, (1257), 1211 states have call predecessors, (1257), 1257 states have call successors, (1257) [2022-10-16 13:03:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 10492 transitions. [2022-10-16 13:03:35,140 INFO L78 Accepts]: Start accepts. Automaton has 7941 states and 10492 transitions. Word has length 73 [2022-10-16 13:03:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:35,140 INFO L495 AbstractCegarLoop]: Abstraction has 7941 states and 10492 transitions. [2022-10-16 13:03:35,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 7941 states and 10492 transitions. [2022-10-16 13:03:35,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-10-16 13:03:35,143 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:35,143 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-10-16 13:03:35,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 13:03:35,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 13:03:35,357 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting unlink_all_urbsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:35,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:35,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2026242853, now seen corresponding path program 1 times [2022-10-16 13:03:35,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:35,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794136280] [2022-10-16 13:03:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:35,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-16 13:03:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-16 13:03:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-16 13:03:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-10-16 13:03:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-16 13:03:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:35,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:35,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794136280] [2022-10-16 13:03:35,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794136280] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:35,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:35,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:03:35,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606133457] [2022-10-16 13:03:35,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:35,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:03:35,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:35,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:03:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:35,621 INFO L87 Difference]: Start difference. First operand 7941 states and 10492 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-16 13:03:42,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:44,866 INFO L93 Difference]: Finished difference Result 16545 states and 22513 transitions. [2022-10-16 13:03:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 13:03:44,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 82 [2022-10-16 13:03:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:44,903 INFO L225 Difference]: With dead ends: 16545 [2022-10-16 13:03:44,903 INFO L226 Difference]: Without dead ends: 8650 [2022-10-16 13:03:44,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-10-16 13:03:44,929 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 2987 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 1479 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 2592 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1479 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:44,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3091 Valid, 2592 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1479 Valid, 1690 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-10-16 13:03:44,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8650 states. [2022-10-16 13:03:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8650 to 6332. [2022-10-16 13:03:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6332 states, 4869 states have (on average 1.3191620455945778) internal successors, (6423), 4980 states have internal predecessors, (6423), 981 states have call successors, (981), 458 states have call predecessors, (981), 458 states have return successors, (981), 942 states have call predecessors, (981), 981 states have call successors, (981) [2022-10-16 13:03:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6332 states to 6332 states and 8385 transitions. [2022-10-16 13:03:45,854 INFO L78 Accepts]: Start accepts. Automaton has 6332 states and 8385 transitions. Word has length 82 [2022-10-16 13:03:45,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:45,855 INFO L495 AbstractCegarLoop]: Abstraction has 6332 states and 8385 transitions. [2022-10-16 13:03:45,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-10-16 13:03:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 6332 states and 8385 transitions. [2022-10-16 13:03:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-16 13:03:45,857 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:45,857 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:03:45,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-16 13:03:45,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:45,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1105939976, now seen corresponding path program 1 times [2022-10-16 13:03:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:45,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109595231] [2022-10-16 13:03:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:45,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:46,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:46,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:03:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:03:46,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:46,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109595231] [2022-10-16 13:03:46,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109595231] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:46,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:46,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:03:46,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840951216] [2022-10-16 13:03:46,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:46,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:03:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:03:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:03:46,453 INFO L87 Difference]: Start difference. First operand 6332 states and 8385 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:03:50,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:50,795 INFO L93 Difference]: Finished difference Result 13298 states and 17832 transitions. [2022-10-16 13:03:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:03:50,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 84 [2022-10-16 13:03:50,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:50,902 INFO L225 Difference]: With dead ends: 13298 [2022-10-16 13:03:50,902 INFO L226 Difference]: Without dead ends: 7012 [2022-10-16 13:03:50,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:03:50,920 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 250 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 141 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:50,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1973 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 541 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-10-16 13:03:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7012 states. [2022-10-16 13:03:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7012 to 6347. [2022-10-16 13:03:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6347 states, 4884 states have (on average 1.3181818181818181) internal successors, (6438), 4995 states have internal predecessors, (6438), 981 states have call successors, (981), 458 states have call predecessors, (981), 458 states have return successors, (981), 942 states have call predecessors, (981), 981 states have call successors, (981) [2022-10-16 13:03:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6347 states to 6347 states and 8400 transitions. [2022-10-16 13:03:51,609 INFO L78 Accepts]: Start accepts. Automaton has 6347 states and 8400 transitions. Word has length 84 [2022-10-16 13:03:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:51,610 INFO L495 AbstractCegarLoop]: Abstraction has 6347 states and 8400 transitions. [2022-10-16 13:03:51,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:03:51,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6347 states and 8400 transitions. [2022-10-16 13:03:51,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-16 13:03:51,614 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:51,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:03:51,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-16 13:03:51,615 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash -302337569, now seen corresponding path program 1 times [2022-10-16 13:03:51,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:51,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710936323] [2022-10-16 13:03:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:51,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:03:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:03:52,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:52,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710936323] [2022-10-16 13:03:52,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710936323] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:52,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:52,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:03:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17574538] [2022-10-16 13:03:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:03:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:03:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:03:52,217 INFO L87 Difference]: Start difference. First operand 6347 states and 8400 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:03:55,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:56,089 INFO L93 Difference]: Finished difference Result 13328 states and 17862 transitions. [2022-10-16 13:03:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:03:56,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 85 [2022-10-16 13:03:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:56,117 INFO L225 Difference]: With dead ends: 13328 [2022-10-16 13:03:56,117 INFO L226 Difference]: Without dead ends: 7027 [2022-10-16 13:03:56,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:03:56,141 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 250 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:56,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1975 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-10-16 13:03:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7027 states. [2022-10-16 13:03:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7027 to 6362. [2022-10-16 13:03:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 4899 states have (on average 1.3172075933864054) internal successors, (6453), 5010 states have internal predecessors, (6453), 981 states have call successors, (981), 458 states have call predecessors, (981), 458 states have return successors, (981), 942 states have call predecessors, (981), 981 states have call successors, (981) [2022-10-16 13:03:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8415 transitions. [2022-10-16 13:03:56,903 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8415 transitions. Word has length 85 [2022-10-16 13:03:56,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:56,903 INFO L495 AbstractCegarLoop]: Abstraction has 6362 states and 8415 transitions. [2022-10-16 13:03:56,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:03:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8415 transitions. [2022-10-16 13:03:56,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-16 13:03:56,906 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:56,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:03:56,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-16 13:03:56,906 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:03:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash -867726046, now seen corresponding path program 1 times [2022-10-16 13:03:56,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:56,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111643750] [2022-10-16 13:03:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:56,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:57,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:03:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:03:57,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:57,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111643750] [2022-10-16 13:03:57,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111643750] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:57,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708476178] [2022-10-16 13:03:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:57,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:57,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:57,485 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:03:57,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 13:03:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:57,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 13:03:57,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:03:57,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:03:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:03:58,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708476178] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:58,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-16 13:03:58,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2022-10-16 13:03:58,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537665021] [2022-10-16 13:03:58,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:58,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:03:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:58,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:03:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:03:58,061 INFO L87 Difference]: Start difference. First operand 6362 states and 8415 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:03:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:58,903 INFO L93 Difference]: Finished difference Result 12693 states and 16871 transitions. [2022-10-16 13:03:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:03:58,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 86 [2022-10-16 13:03:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:58,933 INFO L225 Difference]: With dead ends: 12693 [2022-10-16 13:03:58,933 INFO L226 Difference]: Without dead ends: 6377 [2022-10-16 13:03:58,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:03:58,956 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 12 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:58,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2762 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:03:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6377 states. [2022-10-16 13:03:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6377 to 6377. [2022-10-16 13:03:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6377 states, 4914 states have (on average 1.3162393162393162) internal successors, (6468), 5025 states have internal predecessors, (6468), 981 states have call successors, (981), 458 states have call predecessors, (981), 458 states have return successors, (981), 942 states have call predecessors, (981), 981 states have call successors, (981) [2022-10-16 13:03:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6377 states to 6377 states and 8430 transitions. [2022-10-16 13:03:59,789 INFO L78 Accepts]: Start accepts. Automaton has 6377 states and 8430 transitions. Word has length 86 [2022-10-16 13:03:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:59,790 INFO L495 AbstractCegarLoop]: Abstraction has 6377 states and 8430 transitions. [2022-10-16 13:03:59,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:03:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6377 states and 8430 transitions. [2022-10-16 13:03:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-16 13:03:59,792 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:59,792 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:03:59,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 13:04:00,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 13:04:00,006 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:04:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:00,007 INFO L85 PathProgramCache]: Analyzing trace with hash -340658821, now seen corresponding path program 1 times [2022-10-16 13:04:00,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:00,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911616943] [2022-10-16 13:04:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:00,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:00,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:00,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:04:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-10-16 13:04:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:00,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911616943] [2022-10-16 13:04:00,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911616943] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:04:00,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397564002] [2022-10-16 13:04:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:00,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:00,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:04:00,633 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) [2022-10-16 13:04:00,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 13:04:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:01,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-16 13:04:01,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:04:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:04:01,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:04:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-10-16 13:04:01,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397564002] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:04:01,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:04:01,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2022-10-16 13:04:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229738865] [2022-10-16 13:04:01,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:04:01,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 13:04:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 13:04:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:04:01,522 INFO L87 Difference]: Start difference. First operand 6377 states and 8430 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:04:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:05,605 INFO L93 Difference]: Finished difference Result 13418 states and 17982 transitions. [2022-10-16 13:04:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:04:05,605 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 87 [2022-10-16 13:04:05,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:05,637 INFO L225 Difference]: With dead ends: 13418 [2022-10-16 13:04:05,637 INFO L226 Difference]: Without dead ends: 7087 [2022-10-16 13:04:05,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:04:05,654 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 250 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:05,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 3989 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-16 13:04:05,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7087 states. [2022-10-16 13:04:06,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7087 to 6422. [2022-10-16 13:04:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6422 states, 4959 states have (on average 1.3133696309739866) internal successors, (6513), 5070 states have internal predecessors, (6513), 981 states have call successors, (981), 458 states have call predecessors, (981), 458 states have return successors, (981), 942 states have call predecessors, (981), 981 states have call successors, (981) [2022-10-16 13:04:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6422 states to 6422 states and 8475 transitions. [2022-10-16 13:04:06,598 INFO L78 Accepts]: Start accepts. Automaton has 6422 states and 8475 transitions. Word has length 87 [2022-10-16 13:04:06,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:06,599 INFO L495 AbstractCegarLoop]: Abstraction has 6422 states and 8475 transitions. [2022-10-16 13:04:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:04:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6422 states and 8475 transitions. [2022-10-16 13:04:06,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-16 13:04:06,601 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:06,602 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-10-16 13:04:06,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 13:04:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:06,816 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting unlink_all_urbsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:04:06,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:06,817 INFO L85 PathProgramCache]: Analyzing trace with hash 280997114, now seen corresponding path program 1 times [2022-10-16 13:04:06,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:06,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762579123] [2022-10-16 13:04:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:06,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 13:04:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 13:04:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-16 13:04:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 13:04:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 13:04:07,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:07,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762579123] [2022-10-16 13:04:07,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762579123] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:07,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:04:07,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:04:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837855800] [2022-10-16 13:04:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:07,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:04:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:04:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:04:07,192 INFO L87 Difference]: Start difference. First operand 6422 states and 8475 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 13:04:14,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:04:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:16,470 INFO L93 Difference]: Finished difference Result 19338 states and 26258 transitions. [2022-10-16 13:04:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:04:16,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2022-10-16 13:04:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:16,517 INFO L225 Difference]: With dead ends: 19338 [2022-10-16 13:04:16,518 INFO L226 Difference]: Without dead ends: 12962 [2022-10-16 13:04:16,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:04:16,534 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 2252 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:16,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2350 Valid, 2931 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-10-16 13:04:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2022-10-16 13:04:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 9318. [2022-10-16 13:04:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9318 states, 7192 states have (on average 1.3150723025583981) internal successors, (9458), 7373 states have internal predecessors, (9458), 1365 states have call successors, (1365), 737 states have call predecessors, (1365), 737 states have return successors, (1365), 1298 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-10-16 13:04:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9318 states to 9318 states and 12188 transitions. [2022-10-16 13:04:17,654 INFO L78 Accepts]: Start accepts. Automaton has 9318 states and 12188 transitions. Word has length 88 [2022-10-16 13:04:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:17,654 INFO L495 AbstractCegarLoop]: Abstraction has 9318 states and 12188 transitions. [2022-10-16 13:04:17,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 13:04:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 9318 states and 12188 transitions. [2022-10-16 13:04:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-10-16 13:04:17,656 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:17,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:04:17,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 13:04:17,657 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:04:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1740502950, now seen corresponding path program 2 times [2022-10-16 13:04:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:17,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972673730] [2022-10-16 13:04:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:18,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:18,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:04:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 13:04:18,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972673730] [2022-10-16 13:04:18,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972673730] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:04:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660851799] [2022-10-16 13:04:18,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 13:04:18,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:18,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:04:18,260 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) [2022-10-16 13:04:18,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 13:04:19,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 13:04:19,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 13:04:19,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 13:04:19,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:04:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 13:04:20,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:04:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-16 13:04:20,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660851799] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:04:20,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:04:20,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 11 [2022-10-16 13:04:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973742026] [2022-10-16 13:04:20,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:04:20,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 13:04:20,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:20,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 13:04:20,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:04:20,123 INFO L87 Difference]: Start difference. First operand 9318 states and 12188 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:04:25,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:04:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:26,261 INFO L93 Difference]: Finished difference Result 19840 states and 26315 transitions. [2022-10-16 13:04:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:04:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2022-10-16 13:04:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:26,296 INFO L225 Difference]: With dead ends: 19840 [2022-10-16 13:04:26,296 INFO L226 Difference]: Without dead ends: 10568 [2022-10-16 13:04:26,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-10-16 13:04:26,320 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 256 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 145 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 4708 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:26,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 4708 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1610 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-10-16 13:04:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10568 states. [2022-10-16 13:04:27,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10568 to 9384. [2022-10-16 13:04:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9384 states, 7258 states have (on average 1.3122072196197299) internal successors, (9524), 7439 states have internal predecessors, (9524), 1365 states have call successors, (1365), 737 states have call predecessors, (1365), 737 states have return successors, (1365), 1298 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-10-16 13:04:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9384 states to 9384 states and 12254 transitions. [2022-10-16 13:04:27,506 INFO L78 Accepts]: Start accepts. Automaton has 9384 states and 12254 transitions. Word has length 90 [2022-10-16 13:04:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:27,506 INFO L495 AbstractCegarLoop]: Abstraction has 9384 states and 12254 transitions. [2022-10-16 13:04:27,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:04:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 9384 states and 12254 transitions. [2022-10-16 13:04:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-16 13:04:27,508 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:27,508 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:04:27,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 13:04:27,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:27,715 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:04:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash 201559286, now seen corresponding path program 1 times [2022-10-16 13:04:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:27,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103453826] [2022-10-16 13:04:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:27,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:27,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:27,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:27,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:04:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:27,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 13:04:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:27,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 13:04:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:04:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:04:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-16 13:04:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:04:28,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:28,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103453826] [2022-10-16 13:04:28,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103453826] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:28,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:04:28,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:04:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857981587] [2022-10-16 13:04:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:28,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:04:28,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:28,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:04:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:04:28,041 INFO L87 Difference]: Start difference. First operand 9384 states and 12254 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:32,031 INFO L93 Difference]: Finished difference Result 21236 states and 28520 transitions. [2022-10-16 13:04:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 13:04:32,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 93 [2022-10-16 13:04:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:32,072 INFO L225 Difference]: With dead ends: 21236 [2022-10-16 13:04:32,072 INFO L226 Difference]: Without dead ends: 11898 [2022-10-16 13:04:32,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:04:32,094 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 1123 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:32,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 2388 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-16 13:04:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11898 states. [2022-10-16 13:04:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11898 to 9440. [2022-10-16 13:04:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9440 states, 7314 states have (on average 1.3098167897183484) internal successors, (9580), 7495 states have internal predecessors, (9580), 1365 states have call successors, (1365), 737 states have call predecessors, (1365), 737 states have return successors, (1365), 1298 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-10-16 13:04:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9440 states to 9440 states and 12310 transitions. [2022-10-16 13:04:33,060 INFO L78 Accepts]: Start accepts. Automaton has 9440 states and 12310 transitions. Word has length 93 [2022-10-16 13:04:33,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:33,060 INFO L495 AbstractCegarLoop]: Abstraction has 9440 states and 12310 transitions. [2022-10-16 13:04:33,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 9440 states and 12310 transitions. [2022-10-16 13:04:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-16 13:04:33,062 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:33,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:04:33,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 13:04:33,063 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:04:33,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:33,063 INFO L85 PathProgramCache]: Analyzing trace with hash -204445859, now seen corresponding path program 3 times [2022-10-16 13:04:33,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:33,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935767027] [2022-10-16 13:04:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:33,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:04:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-16 13:04:34,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:34,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935767027] [2022-10-16 13:04:34,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935767027] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:04:34,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48619037] [2022-10-16 13:04:34,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 13:04:34,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:34,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:04:34,036 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) [2022-10-16 13:04:34,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 13:04:35,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 13:04:35,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 13:04:35,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 13:04:35,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:04:35,437 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 13:04:35,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:04:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 13:04:35,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48619037] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:04:35,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:04:35,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2022-10-16 13:04:35,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939454088] [2022-10-16 13:04:35,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:04:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 13:04:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 13:04:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-10-16 13:04:35,552 INFO L87 Difference]: Start difference. First operand 9440 states and 12310 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:04:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:40,821 INFO L93 Difference]: Finished difference Result 20084 states and 26559 transitions. [2022-10-16 13:04:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 13:04:40,821 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 93 [2022-10-16 13:04:40,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:40,845 INFO L225 Difference]: With dead ends: 20084 [2022-10-16 13:04:40,845 INFO L226 Difference]: Without dead ends: 10690 [2022-10-16 13:04:40,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-10-16 13:04:40,866 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 274 mSDsluCounter, 3846 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 4738 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:40,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 4738 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-10-16 13:04:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10690 states. [2022-10-16 13:04:42,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10690 to 9506. [2022-10-16 13:04:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9506 states, 7380 states have (on average 1.3070460704607045) internal successors, (9646), 7561 states have internal predecessors, (9646), 1365 states have call successors, (1365), 737 states have call predecessors, (1365), 737 states have return successors, (1365), 1298 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-10-16 13:04:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9506 states to 9506 states and 12376 transitions. [2022-10-16 13:04:42,102 INFO L78 Accepts]: Start accepts. Automaton has 9506 states and 12376 transitions. Word has length 93 [2022-10-16 13:04:42,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:42,102 INFO L495 AbstractCegarLoop]: Abstraction has 9506 states and 12376 transitions. [2022-10-16 13:04:42,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:04:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9506 states and 12376 transitions. [2022-10-16 13:04:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-10-16 13:04:42,105 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:42,105 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:04:42,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 13:04:42,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:42,312 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:04:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash 377697084, now seen corresponding path program 1 times [2022-10-16 13:04:42,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:42,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180134956] [2022-10-16 13:04:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:42,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:04:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 13:04:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 13:04:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:04:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:04:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-16 13:04:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:04:42,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:42,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180134956] [2022-10-16 13:04:42,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180134956] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:42,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:04:42,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:04:42,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947769836] [2022-10-16 13:04:42,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:42,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:04:42,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:42,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:04:42,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:04:42,626 INFO L87 Difference]: Start difference. First operand 9506 states and 12376 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:47,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:04:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:48,080 INFO L93 Difference]: Finished difference Result 11964 states and 16346 transitions. [2022-10-16 13:04:48,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 13:04:48,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 97 [2022-10-16 13:04:48,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:48,112 INFO L225 Difference]: With dead ends: 11964 [2022-10-16 13:04:48,112 INFO L226 Difference]: Without dead ends: 11963 [2022-10-16 13:04:48,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:04:48,117 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 874 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:48,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 2373 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-10-16 13:04:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11963 states. [2022-10-16 13:04:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11963 to 9505. [2022-10-16 13:04:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9505 states, 7380 states have (on average 1.3051490514905149) internal successors, (9632), 7560 states have internal predecessors, (9632), 1365 states have call successors, (1365), 737 states have call predecessors, (1365), 737 states have return successors, (1365), 1298 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-10-16 13:04:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9505 states to 9505 states and 12362 transitions. [2022-10-16 13:04:49,173 INFO L78 Accepts]: Start accepts. Automaton has 9505 states and 12362 transitions. Word has length 97 [2022-10-16 13:04:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:49,174 INFO L495 AbstractCegarLoop]: Abstraction has 9505 states and 12362 transitions. [2022-10-16 13:04:49,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 9505 states and 12362 transitions. [2022-10-16 13:04:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-10-16 13:04:49,176 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:49,176 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-10-16 13:04:49,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-16 13:04:49,177 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:04:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:49,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1176291409, now seen corresponding path program 1 times [2022-10-16 13:04:49,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:49,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354278576] [2022-10-16 13:04:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:04:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-16 13:04:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 13:04:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:04:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:04:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-10-16 13:04:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:04:49,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:49,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354278576] [2022-10-16 13:04:49,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354278576] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:04:49,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356736748] [2022-10-16 13:04:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:49,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:49,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:04:49,522 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) [2022-10-16 13:04:49,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 13:04:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:50,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:04:50,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:04:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:04:50,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:04:50,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356736748] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:50,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:04:50,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-16 13:04:50,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6253737] [2022-10-16 13:04:50,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:50,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:04:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:04:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:04:50,129 INFO L87 Difference]: Start difference. First operand 9505 states and 12362 transitions. Second operand has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:51,207 INFO L93 Difference]: Finished difference Result 10587 states and 13958 transitions. [2022-10-16 13:04:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:04:51,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 98 [2022-10-16 13:04:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:51,229 INFO L225 Difference]: With dead ends: 10587 [2022-10-16 13:04:51,229 INFO L226 Difference]: Without dead ends: 10586 [2022-10-16 13:04:51,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:04:51,233 INFO L413 NwaCegarLoop]: 1270 mSDtfsCounter, 564 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:51,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 2196 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:04:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10586 states. [2022-10-16 13:04:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10586 to 9462. [2022-10-16 13:04:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9462 states, 7338 states have (on average 1.3049877350776777) internal successors, (9576), 7517 states have internal predecessors, (9576), 1365 states have call successors, (1365), 737 states have call predecessors, (1365), 737 states have return successors, (1365), 1298 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-10-16 13:04:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9462 states to 9462 states and 12306 transitions. [2022-10-16 13:04:52,202 INFO L78 Accepts]: Start accepts. Automaton has 9462 states and 12306 transitions. Word has length 98 [2022-10-16 13:04:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:52,203 INFO L495 AbstractCegarLoop]: Abstraction has 9462 states and 12306 transitions. [2022-10-16 13:04:52,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9462 states and 12306 transitions. [2022-10-16 13:04:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-16 13:04:52,205 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:52,205 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:04:52,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 13:04:52,418 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,SelfDestructingSolverStorable22 [2022-10-16 13:04:52,419 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:04:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash 37515398, now seen corresponding path program 4 times [2022-10-16 13:04:52,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:52,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458058516] [2022-10-16 13:04:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:52,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:53,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:53,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:04:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-10-16 13:04:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:53,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458058516] [2022-10-16 13:04:53,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458058516] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:04:53,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613485792] [2022-10-16 13:04:53,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 13:04:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:53,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:04:53,483 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) [2022-10-16 13:04:53,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 13:04:54,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 13:04:54,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 13:04:54,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-16 13:04:54,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:04:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-10-16 13:04:54,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:04:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-10-16 13:04:55,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613485792] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:04:55,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:04:55,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2022-10-16 13:04:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676931518] [2022-10-16 13:04:55,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:04:55,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 13:04:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 13:04:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2022-10-16 13:04:55,161 INFO L87 Difference]: Start difference. First operand 9462 states and 12306 transitions. Second operand has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:05:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:05:04,969 INFO L93 Difference]: Finished difference Result 20348 states and 26793 transitions. [2022-10-16 13:05:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 13:05:04,970 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 96 [2022-10-16 13:05:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:05:04,998 INFO L225 Difference]: With dead ends: 20348 [2022-10-16 13:05:04,999 INFO L226 Difference]: Without dead ends: 10734 [2022-10-16 13:05:05,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=250, Invalid=1556, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 13:05:05,021 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 265 mSDsluCounter, 10688 mSDsCounter, 0 mSdLazyCounter, 4370 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 11578 SdHoareTripleChecker+Invalid, 4537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 4370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:05:05,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 11578 Invalid, 4537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 4370 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-10-16 13:05:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10734 states. [2022-10-16 13:05:05,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10734 to 9550. [2022-10-16 13:05:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9550 states, 7426 states have (on average 1.3013735523835173) internal successors, (9664), 7605 states have internal predecessors, (9664), 1365 states have call successors, (1365), 737 states have call predecessors, (1365), 737 states have return successors, (1365), 1298 states have call predecessors, (1365), 1365 states have call successors, (1365) [2022-10-16 13:05:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9550 states to 9550 states and 12394 transitions. [2022-10-16 13:05:06,020 INFO L78 Accepts]: Start accepts. Automaton has 9550 states and 12394 transitions. Word has length 96 [2022-10-16 13:05:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:05:06,021 INFO L495 AbstractCegarLoop]: Abstraction has 9550 states and 12394 transitions. [2022-10-16 13:05:06,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.037037037037037) internal successors, (82), 26 states have internal predecessors, (82), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:05:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9550 states and 12394 transitions. [2022-10-16 13:05:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-16 13:05:06,023 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:05:06,024 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:05:06,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 13:05:06,239 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,SelfDestructingSolverStorable23 [2022-10-16 13:05:06,240 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-16 13:05:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:05:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash 192122438, now seen corresponding path program 5 times [2022-10-16 13:05:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:05:06,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110118940] [2022-10-16 13:05:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:05:06,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:05:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:05:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:05:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:05:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:07,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:05:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:07,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:05:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-10-16 13:05:07,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:05:07,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110118940] [2022-10-16 13:05:07,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110118940] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:05:07,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302640615] [2022-10-16 13:05:07,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 13:05:07,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:05:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:05:07,905 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:05:07,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process