/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 12:58:06,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 12:58:06,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 12:58:06,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 12:58:06,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 12:58:06,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 12:58:06,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 12:58:06,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 12:58:06,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 12:58:06,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 12:58:06,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 12:58:06,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 12:58:06,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 12:58:06,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 12:58:06,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 12:58:06,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 12:58:06,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 12:58:06,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 12:58:06,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 12:58:06,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 12:58:06,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 12:58:06,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 12:58:06,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 12:58:06,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 12:58:06,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 12:58:06,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 12:58:06,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 12:58:06,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 12:58:06,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 12:58:06,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 12:58:06,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 12:58:06,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 12:58:06,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 12:58:06,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 12:58:06,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 12:58:06,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 12:58:06,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 12:58:06,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 12:58:06,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 12:58:06,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 12:58:06,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 12:58:06,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 12:58:06,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 12:58:06,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 12:58:06,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 12:58:06,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 12:58:06,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 12:58:06,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 12:58:06,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 12:58:06,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 12:58:06,941 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 12:58:06,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 12:58:06,941 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 12:58:06,941 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 12:58:06,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 12:58:06,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 12:58:06,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 12:58:06,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 12:58:06,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 12:58:06,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 12:58:06,943 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 12:58:06,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 12:58:06,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 12:58:06,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 12:58:06,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 12:58:06,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 12:58:06,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 12:58:06,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 12:58:06,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 12:58:06,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 12:58:06,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 12:58:06,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 12:58:06,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 12:58:06,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 12:58:06,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 12:58:06,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 12:58:07,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 12:58:07,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 12:58:07,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 12:58:07,402 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 12:58:07,403 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 12:58:07,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2022-10-16 12:58:07,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23554dcef/c23a48b682b240d7a481bfba80177d79/FLAG8703c678c [2022-10-16 12:58:08,497 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 12:58:08,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2022-10-16 12:58:08,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23554dcef/c23a48b682b240d7a481bfba80177d79/FLAG8703c678c [2022-10-16 12:58:09,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23554dcef/c23a48b682b240d7a481bfba80177d79 [2022-10-16 12:58:09,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 12:58:09,031 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 12:58:09,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 12:58:09,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 12:58:09,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 12:58:09,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:58:09" (1/1) ... [2022-10-16 12:58:09,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4438a9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:09, skipping insertion in model container [2022-10-16 12:58:09,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:58:09" (1/1) ... [2022-10-16 12:58:09,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 12:58:09,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 12:58:10,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i[153430,153443] [2022-10-16 12:58:10,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 12:58:10,653 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 12:58:10,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i[153430,153443] [2022-10-16 12:58:10,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 12:58:11,018 INFO L208 MainTranslator]: Completed translation [2022-10-16 12:58:11,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11 WrapperNode [2022-10-16 12:58:11,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 12:58:11,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 12:58:11,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 12:58:11,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 12:58:11,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,248 INFO L138 Inliner]: procedures = 121, calls = 866, calls flagged for inlining = 46, calls inlined = 30, statements flattened = 1613 [2022-10-16 12:58:11,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 12:58:11,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 12:58:11,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 12:58:11,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 12:58:11,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,432 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 12:58:11,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 12:58:11,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 12:58:11,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 12:58:11,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (1/1) ... [2022-10-16 12:58:11,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 12:58:11,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:11,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 12:58:11,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 12:58:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 12:58:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-16 12:58:11,559 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-16 12:58:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-16 12:58:11,560 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-16 12:58:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure usb_match_id [2022-10-16 12:58:11,560 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_match_id [2022-10-16 12:58:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 12:58:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure imon_init [2022-10-16 12:58:11,560 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_init [2022-10-16 12:58:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-16 12:58:11,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-16 12:58:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-16 12:58:11,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-16 12:58:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-16 12:58:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-16 12:58:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure imon_exit [2022-10-16 12:58:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_exit [2022-10-16 12:58:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-10-16 12:58:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-10-16 12:58:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-16 12:58:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-16 12:58:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 12:58:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-16 12:58:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-16 12:58:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-10-16 12:58:11,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-10-16 12:58:11,563 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2022-10-16 12:58:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2022-10-16 12:58:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 12:58:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-16 12:58:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-16 12:58:11,564 INFO L130 BoogieDeclarations]: Found specification of procedure lirc_buffer_free [2022-10-16 12:58:11,564 INFO L138 BoogieDeclarations]: Found implementation of procedure lirc_buffer_free [2022-10-16 12:58:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 12:58:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 12:58:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 12:58:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure deregister_from_lirc [2022-10-16 12:58:11,565 INFO L138 BoogieDeclarations]: Found implementation of procedure deregister_from_lirc [2022-10-16 12:58:11,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 12:58:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-16 12:58:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-16 12:58:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-10-16 12:58:11,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-10-16 12:58:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 12:58:11,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 12:58:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-16 12:58:11,567 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-16 12:58:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-16 12:58:11,567 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-16 12:58:11,567 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-16 12:58:11,567 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-16 12:58:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-16 12:58:11,568 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-16 12:58:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-16 12:58:11,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-16 12:58:11,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-10-16 12:58:11,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-10-16 12:58:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 12:58:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-16 12:58:11,569 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-16 12:58:11,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 12:58:11,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 12:58:11,994 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 12:58:11,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 12:58:12,347 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-10-16 12:58:12,583 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 12:58:14,347 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume !false; [2022-10-16 12:58:14,348 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume false; [2022-10-16 12:58:14,385 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 12:58:14,408 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 12:58:14,408 INFO L300 CfgBuilder]: Removed 25 assume(true) statements. [2022-10-16 12:58:14,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:58:14 BoogieIcfgContainer [2022-10-16 12:58:14,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 12:58:14,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 12:58:14,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 12:58:14,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 12:58:14,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:58:09" (1/3) ... [2022-10-16 12:58:14,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65758ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:58:14, skipping insertion in model container [2022-10-16 12:58:14,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:58:11" (2/3) ... [2022-10-16 12:58:14,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65758ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:58:14, skipping insertion in model container [2022-10-16 12:58:14,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:58:14" (3/3) ... [2022-10-16 12:58:14,432 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-staging-lirc-lirc_imon.ko.cil.out.i [2022-10-16 12:58:14,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 12:58:14,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-16 12:58:14,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 12:58:14,615 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;@4420d3a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 12:58:14,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-16 12:58:14,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 282 states have (on average 1.5425531914893618) internal successors, (435), 320 states have internal predecessors, (435), 61 states have call successors, (61), 25 states have call predecessors, (61), 24 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2022-10-16 12:58:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 12:58:14,644 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:14,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:14,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:14,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash 964915947, now seen corresponding path program 1 times [2022-10-16 12:58:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:14,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965951619] [2022-10-16 12:58:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:14,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:15,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 12:58:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:15,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:15,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965951619] [2022-10-16 12:58:15,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965951619] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:15,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:15,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 12:58:15,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841286492] [2022-10-16 12:58:15,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:15,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 12:58:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:15,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 12:58:15,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:58:15,708 INFO L87 Difference]: Start difference. First operand has 390 states, 282 states have (on average 1.5425531914893618) internal successors, (435), 320 states have internal predecessors, (435), 61 states have call successors, (61), 25 states have call predecessors, (61), 24 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 12:58:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:16,587 INFO L93 Difference]: Finished difference Result 812 states and 1180 transitions. [2022-10-16 12:58:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 12:58:16,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-10-16 12:58:16,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:16,610 INFO L225 Difference]: With dead ends: 812 [2022-10-16 12:58:16,610 INFO L226 Difference]: Without dead ends: 406 [2022-10-16 12:58:16,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:58:16,623 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 308 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:16,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 922 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 12:58:16,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-10-16 12:58:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 379. [2022-10-16 12:58:16,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 281 states have (on average 1.3345195729537367) internal successors, (375), 310 states have internal predecessors, (375), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-10-16 12:58:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 487 transitions. [2022-10-16 12:58:16,727 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 487 transitions. Word has length 35 [2022-10-16 12:58:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:16,728 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 487 transitions. [2022-10-16 12:58:16,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 12:58:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 487 transitions. [2022-10-16 12:58:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 12:58:16,731 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:16,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:16,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 12:58:16,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:16,733 INFO L85 PathProgramCache]: Analyzing trace with hash 522332980, now seen corresponding path program 1 times [2022-10-16 12:58:16,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:16,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724166622] [2022-10-16 12:58:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:16,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:17,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:17,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:17,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:17,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724166622] [2022-10-16 12:58:17,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724166622] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:17,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:17,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 12:58:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685460826] [2022-10-16 12:58:17,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:17,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 12:58:17,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 12:58:17,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:58:17,256 INFO L87 Difference]: Start difference. First operand 379 states and 487 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 12:58:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:18,086 INFO L93 Difference]: Finished difference Result 864 states and 1138 transitions. [2022-10-16 12:58:18,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 12:58:18,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-10-16 12:58:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:18,093 INFO L225 Difference]: With dead ends: 864 [2022-10-16 12:58:18,093 INFO L226 Difference]: Without dead ends: 497 [2022-10-16 12:58:18,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:58:18,097 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 182 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:18,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1092 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-16 12:58:18,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-10-16 12:58:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 386. [2022-10-16 12:58:18,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 288 states have (on average 1.3263888888888888) internal successors, (382), 317 states have internal predecessors, (382), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-10-16 12:58:18,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 494 transitions. [2022-10-16 12:58:18,167 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 494 transitions. Word has length 44 [2022-10-16 12:58:18,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:18,167 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 494 transitions. [2022-10-16 12:58:18,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 12:58:18,168 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 494 transitions. [2022-10-16 12:58:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-16 12:58:18,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:18,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:18,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 12:58:18,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:18,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1956072616, now seen corresponding path program 1 times [2022-10-16 12:58:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:18,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690955648] [2022-10-16 12:58:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 12:58:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-16 12:58:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 12:58:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:18,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690955648] [2022-10-16 12:58:18,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690955648] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:18,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733974975] [2022-10-16 12:58:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:18,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:18,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:18,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:58:18,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 12:58:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:19,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 12:58:19,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-16 12:58:19,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:19,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733974975] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:19,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:19,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-10-16 12:58:19,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334359579] [2022-10-16 12:58:19,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:19,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 12:58:19,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:19,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 12:58:19,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-16 12:58:19,617 INFO L87 Difference]: Start difference. First operand 386 states and 494 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 12:58:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:19,669 INFO L93 Difference]: Finished difference Result 764 states and 979 transitions. [2022-10-16 12:58:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 12:58:19,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2022-10-16 12:58:19,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:19,674 INFO L225 Difference]: With dead ends: 764 [2022-10-16 12:58:19,674 INFO L226 Difference]: Without dead ends: 386 [2022-10-16 12:58:19,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-16 12:58:19,678 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 0 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:19,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1874 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-10-16 12:58:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-10-16 12:58:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 288 states have (on average 1.3229166666666667) internal successors, (381), 317 states have internal predecessors, (381), 56 states have call successors, (56), 22 states have call predecessors, (56), 22 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2022-10-16 12:58:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 493 transitions. [2022-10-16 12:58:19,739 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 493 transitions. Word has length 77 [2022-10-16 12:58:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:19,743 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 493 transitions. [2022-10-16 12:58:19,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 12:58:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 493 transitions. [2022-10-16 12:58:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-16 12:58:19,750 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:19,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:19,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:19,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:19,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1001843721, now seen corresponding path program 1 times [2022-10-16 12:58:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:19,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196274104] [2022-10-16 12:58:19,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:19,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:20,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:20,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:20,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-16 12:58:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-16 12:58:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 12:58:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:20,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196274104] [2022-10-16 12:58:20,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196274104] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:20,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368979424] [2022-10-16 12:58:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:20,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:20,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:20,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:58:20,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 12:58:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:21,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 12:58:21,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 12:58:21,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:21,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368979424] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:21,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:21,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-10-16 12:58:21,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215896490] [2022-10-16 12:58:21,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:21,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 12:58:21,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 12:58:21,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-16 12:58:21,168 INFO L87 Difference]: Start difference. First operand 386 states and 493 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-16 12:58:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:21,350 INFO L93 Difference]: Finished difference Result 784 states and 1015 transitions. [2022-10-16 12:58:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 12:58:21,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 77 [2022-10-16 12:58:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:21,354 INFO L225 Difference]: With dead ends: 784 [2022-10-16 12:58:21,355 INFO L226 Difference]: Without dead ends: 383 [2022-10-16 12:58:21,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-16 12:58:21,358 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 25 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:21,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1904 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 12:58:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-10-16 12:58:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 380. [2022-10-16 12:58:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 286 states have (on average 1.3041958041958042) internal successors, (373), 312 states have internal predecessors, (373), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-16 12:58:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 476 transitions. [2022-10-16 12:58:21,382 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 476 transitions. Word has length 77 [2022-10-16 12:58:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:21,382 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 476 transitions. [2022-10-16 12:58:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-16 12:58:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 476 transitions. [2022-10-16 12:58:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-16 12:58:21,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:21,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:21,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:21,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 12:58:21,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 908837929, now seen corresponding path program 1 times [2022-10-16 12:58:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350385497] [2022-10-16 12:58:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 12:58:23,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:23,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350385497] [2022-10-16 12:58:23,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350385497] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:23,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950727740] [2022-10-16 12:58:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:23,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:23,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:23,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:58:23,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 12:58:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 12:58:23,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 12:58:23,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:23,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950727740] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:23,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:23,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2022-10-16 12:58:23,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343432160] [2022-10-16 12:58:23,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:23,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:23,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:23,953 INFO L87 Difference]: Start difference. First operand 380 states and 476 transitions. Second operand has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 12:58:24,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:24,006 INFO L93 Difference]: Finished difference Result 593 states and 780 transitions. [2022-10-16 12:58:24,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:24,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 77 [2022-10-16 12:58:24,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:24,012 INFO L225 Difference]: With dead ends: 593 [2022-10-16 12:58:24,012 INFO L226 Difference]: Without dead ends: 592 [2022-10-16 12:58:24,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:24,014 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 196 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:24,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 975 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:24,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-10-16 12:58:24,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 410. [2022-10-16 12:58:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 316 states have (on average 1.3164556962025316) internal successors, (416), 342 states have internal predecessors, (416), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-16 12:58:24,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 519 transitions. [2022-10-16 12:58:24,044 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 519 transitions. Word has length 77 [2022-10-16 12:58:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:24,045 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 519 transitions. [2022-10-16 12:58:24,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 12:58:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 519 transitions. [2022-10-16 12:58:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-16 12:58:24,047 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:24,047 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:24,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:24,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:24,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:24,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1578119275, now seen corresponding path program 1 times [2022-10-16 12:58:24,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:24,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115856801] [2022-10-16 12:58:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:24,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 12:58:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:25,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115856801] [2022-10-16 12:58:25,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115856801] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:25,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084943378] [2022-10-16 12:58:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:25,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:25,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:25,902 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:58:25,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 12:58:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:26,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 2438 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 12:58:26,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 12:58:26,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:26,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084943378] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:26,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:26,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-16 12:58:26,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378146810] [2022-10-16 12:58:26,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:26,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:26,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:26,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:26,536 INFO L87 Difference]: Start difference. First operand 410 states and 519 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 12:58:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:26,595 INFO L93 Difference]: Finished difference Result 516 states and 667 transitions. [2022-10-16 12:58:26,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:26,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2022-10-16 12:58:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:26,600 INFO L225 Difference]: With dead ends: 516 [2022-10-16 12:58:26,600 INFO L226 Difference]: Without dead ends: 503 [2022-10-16 12:58:26,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:26,602 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 214 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:26,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 754 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:26,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-10-16 12:58:26,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 413. [2022-10-16 12:58:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 318 states have (on average 1.3081761006289307) internal successors, (416), 345 states have internal predecessors, (416), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-16 12:58:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 521 transitions. [2022-10-16 12:58:26,631 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 521 transitions. Word has length 79 [2022-10-16 12:58:26,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:26,632 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 521 transitions. [2022-10-16 12:58:26,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 12:58:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 521 transitions. [2022-10-16 12:58:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-16 12:58:26,634 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:26,634 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:26,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:26,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:26,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1890794741, now seen corresponding path program 1 times [2022-10-16 12:58:26,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:26,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85338481] [2022-10-16 12:58:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:27,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 12:58:28,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:28,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85338481] [2022-10-16 12:58:28,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85338481] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:28,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303290311] [2022-10-16 12:58:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:28,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:28,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:28,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:58:28,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 12:58:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:28,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 12:58:28,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 12:58:28,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:28,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303290311] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:28,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:28,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2022-10-16 12:58:28,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572041164] [2022-10-16 12:58:28,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:28,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:28,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:28,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:28,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:28,876 INFO L87 Difference]: Start difference. First operand 413 states and 521 transitions. Second operand has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 12:58:28,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:28,912 INFO L93 Difference]: Finished difference Result 425 states and 537 transitions. [2022-10-16 12:58:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:28,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2022-10-16 12:58:28,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:28,916 INFO L225 Difference]: With dead ends: 425 [2022-10-16 12:58:28,917 INFO L226 Difference]: Without dead ends: 424 [2022-10-16 12:58:28,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:28,918 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 195 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:28,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 680 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:28,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-10-16 12:58:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 412. [2022-10-16 12:58:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 318 states have (on average 1.3050314465408805) internal successors, (415), 344 states have internal predecessors, (415), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-16 12:58:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 520 transitions. [2022-10-16 12:58:28,945 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 520 transitions. Word has length 78 [2022-10-16 12:58:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:28,946 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 520 transitions. [2022-10-16 12:58:28,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 12:58:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 520 transitions. [2022-10-16 12:58:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-16 12:58:28,948 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:28,948 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:28,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:29,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:29,164 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:29,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:29,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1308132294, now seen corresponding path program 1 times [2022-10-16 12:58:29,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:29,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212869621] [2022-10-16 12:58:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:29,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-16 12:58:30,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:30,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212869621] [2022-10-16 12:58:30,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212869621] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:30,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692378236] [2022-10-16 12:58:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:30,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:30,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:30,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:58:30,529 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 12:58:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:31,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 12:58:31,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-16 12:58:31,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:31,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692378236] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:31,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:31,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-16 12:58:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161339575] [2022-10-16 12:58:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:31,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:31,123 INFO L87 Difference]: Start difference. First operand 412 states and 520 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 12:58:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:31,171 INFO L93 Difference]: Finished difference Result 928 states and 1192 transitions. [2022-10-16 12:58:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:31,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2022-10-16 12:58:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:31,175 INFO L225 Difference]: With dead ends: 928 [2022-10-16 12:58:31,175 INFO L226 Difference]: Without dead ends: 528 [2022-10-16 12:58:31,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:31,177 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 112 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:31,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 900 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:31,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-10-16 12:58:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 443. [2022-10-16 12:58:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 349 states have (on average 1.2979942693409743) internal successors, (453), 375 states have internal predecessors, (453), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-16 12:58:31,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 558 transitions. [2022-10-16 12:58:31,208 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 558 transitions. Word has length 89 [2022-10-16 12:58:31,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:31,209 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 558 transitions. [2022-10-16 12:58:31,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 12:58:31,209 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 558 transitions. [2022-10-16 12:58:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-10-16 12:58:31,210 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:31,211 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:31,251 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 12:58:31,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:31,425 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1555259820, now seen corresponding path program 1 times [2022-10-16 12:58:31,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:31,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982930586] [2022-10-16 12:58:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:31,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-16 12:58:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:32,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982930586] [2022-10-16 12:58:32,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982930586] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302803904] [2022-10-16 12:58:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:32,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:32,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:32,863 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 12:58:32,896 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 12:58:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:33,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 12:58:33,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 12:58:33,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:33,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302803904] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:33,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:33,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-16 12:58:33,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240557362] [2022-10-16 12:58:33,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:33,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:33,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:33,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:33,494 INFO L87 Difference]: Start difference. First operand 443 states and 558 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 12:58:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:33,559 INFO L93 Difference]: Finished difference Result 1082 states and 1396 transitions. [2022-10-16 12:58:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:33,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2022-10-16 12:58:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:33,564 INFO L225 Difference]: With dead ends: 1082 [2022-10-16 12:58:33,564 INFO L226 Difference]: Without dead ends: 651 [2022-10-16 12:58:33,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:33,567 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 180 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:33,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 904 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:33,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-10-16 12:58:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 519. [2022-10-16 12:58:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 418 states have (on average 1.291866028708134) internal successors, (540), 444 states have internal predecessors, (540), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2022-10-16 12:58:33,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 659 transitions. [2022-10-16 12:58:33,605 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 659 transitions. Word has length 91 [2022-10-16 12:58:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:33,606 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 659 transitions. [2022-10-16 12:58:33,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 12:58:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 659 transitions. [2022-10-16 12:58:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-16 12:58:33,608 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:33,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:33,652 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 12:58:33,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:33,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:33,824 INFO L85 PathProgramCache]: Analyzing trace with hash -541807490, now seen corresponding path program 1 times [2022-10-16 12:58:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:33,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187347593] [2022-10-16 12:58:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:33,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:35,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:35,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-16 12:58:35,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:35,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187347593] [2022-10-16 12:58:35,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187347593] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:35,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073320467] [2022-10-16 12:58:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:35,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:35,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:35,219 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 12:58:35,222 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 12:58:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:35,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 12:58:35,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-16 12:58:35,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:35,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073320467] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:35,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:35,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-16 12:58:35,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449939590] [2022-10-16 12:58:35,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:35,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:35,870 INFO L87 Difference]: Start difference. First operand 519 states and 659 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 12:58:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:35,954 INFO L93 Difference]: Finished difference Result 1257 states and 1623 transitions. [2022-10-16 12:58:35,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:35,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 93 [2022-10-16 12:58:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:35,959 INFO L225 Difference]: With dead ends: 1257 [2022-10-16 12:58:35,959 INFO L226 Difference]: Without dead ends: 750 [2022-10-16 12:58:35,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:58:35,963 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 191 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:35,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1094 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-10-16 12:58:36,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 565. [2022-10-16 12:58:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 464 states have (on average 1.2801724137931034) internal successors, (594), 490 states have internal predecessors, (594), 60 states have call successors, (60), 22 states have call predecessors, (60), 22 states have return successors, (59), 57 states have call predecessors, (59), 59 states have call successors, (59) [2022-10-16 12:58:36,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 713 transitions. [2022-10-16 12:58:36,012 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 713 transitions. Word has length 93 [2022-10-16 12:58:36,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:36,014 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 713 transitions. [2022-10-16 12:58:36,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 12:58:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 713 transitions. [2022-10-16 12:58:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-16 12:58:36,019 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:36,019 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:36,062 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 12:58:36,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-16 12:58:36,235 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash -650541876, now seen corresponding path program 1 times [2022-10-16 12:58:36,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:36,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187097107] [2022-10-16 12:58:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 12:58:37,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:37,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187097107] [2022-10-16 12:58:37,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187097107] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:37,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434726910] [2022-10-16 12:58:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:37,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:37,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:37,456 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 12:58:37,461 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 12:58:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:38,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 12:58:38,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 12:58:38,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:58:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 12:58:38,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434726910] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 12:58:38,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 12:58:38,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 15 [2022-10-16 12:58:38,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363717879] [2022-10-16 12:58:38,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 12:58:38,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 12:58:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:38,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 12:58:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-10-16 12:58:38,403 INFO L87 Difference]: Start difference. First operand 565 states and 713 transitions. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-16 12:58:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:42,013 INFO L93 Difference]: Finished difference Result 2247 states and 3002 transitions. [2022-10-16 12:58:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 12:58:42,014 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-10-16 12:58:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:42,025 INFO L225 Difference]: With dead ends: 2247 [2022-10-16 12:58:42,025 INFO L226 Difference]: Without dead ends: 1692 [2022-10-16 12:58:42,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-10-16 12:58:42,029 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 884 mSDsluCounter, 5717 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 6415 SdHoareTripleChecker+Invalid, 2696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:42,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 6415 Invalid, 2696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-10-16 12:58:42,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-10-16 12:58:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 919. [2022-10-16 12:58:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 815 states have (on average 1.2699386503067485) internal successors, (1035), 842 states have internal predecessors, (1035), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (69), 59 states have call predecessors, (69), 59 states have call successors, (69) [2022-10-16 12:58:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1164 transitions. [2022-10-16 12:58:42,142 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1164 transitions. Word has length 95 [2022-10-16 12:58:42,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:42,143 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1164 transitions. [2022-10-16 12:58:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 11 states have internal predecessors, (143), 2 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-16 12:58:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1164 transitions. [2022-10-16 12:58:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-16 12:58:42,146 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:42,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:42,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-10-16 12:58:42,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:42,363 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:42,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1723685490, now seen corresponding path program 1 times [2022-10-16 12:58:42,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:42,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396254974] [2022-10-16 12:58:42,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:42,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 12:58:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-16 12:58:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-16 12:58:43,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:43,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396254974] [2022-10-16 12:58:43,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396254974] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698506267] [2022-10-16 12:58:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:43,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:43,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:43,210 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 12:58:43,229 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 12:58:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:43,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 12:58:43,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 12:58:43,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:43,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698506267] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:43,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:43,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-10-16 12:58:43,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546939717] [2022-10-16 12:58:43,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:43,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:43,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 12:58:43,871 INFO L87 Difference]: Start difference. First operand 919 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 12:58:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:43,972 INFO L93 Difference]: Finished difference Result 1918 states and 2446 transitions. [2022-10-16 12:58:43,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:43,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-10-16 12:58:43,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:43,980 INFO L225 Difference]: With dead ends: 1918 [2022-10-16 12:58:43,980 INFO L226 Difference]: Without dead ends: 996 [2022-10-16 12:58:43,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 12:58:43,983 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 69 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:43,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 904 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-10-16 12:58:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 912. [2022-10-16 12:58:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 808 states have (on average 1.2512376237623761) internal successors, (1011), 834 states have internal predecessors, (1011), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (69), 59 states have call predecessors, (69), 59 states have call successors, (69) [2022-10-16 12:58:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1140 transitions. [2022-10-16 12:58:44,055 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1140 transitions. Word has length 113 [2022-10-16 12:58:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:44,055 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1140 transitions. [2022-10-16 12:58:44,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 12:58:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1140 transitions. [2022-10-16 12:58:44,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-10-16 12:58:44,059 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:44,059 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:44,108 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 12:58:44,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 12:58:44,273 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1580494936, now seen corresponding path program 1 times [2022-10-16 12:58:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:44,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436241227] [2022-10-16 12:58:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:44,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 12:58:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-10-16 12:58:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 12:58:45,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:45,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436241227] [2022-10-16 12:58:45,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436241227] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:45,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049798231] [2022-10-16 12:58:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:45,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:45,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:45,071 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 12:58:45,083 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 12:58:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:45,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 12:58:45,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-16 12:58:45,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:45,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049798231] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:45,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:45,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-10-16 12:58:45,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082304444] [2022-10-16 12:58:45,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:45,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:45,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:45,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:45,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 12:58:45,737 INFO L87 Difference]: Start difference. First operand 912 states and 1140 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 12:58:45,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:45,846 INFO L93 Difference]: Finished difference Result 2368 states and 2986 transitions. [2022-10-16 12:58:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:45,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 131 [2022-10-16 12:58:45,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:45,856 INFO L225 Difference]: With dead ends: 2368 [2022-10-16 12:58:45,856 INFO L226 Difference]: Without dead ends: 1468 [2022-10-16 12:58:45,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 12:58:45,860 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 179 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:45,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1062 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2022-10-16 12:58:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1290. [2022-10-16 12:58:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1186 states have (on average 1.2360876897133222) internal successors, (1466), 1212 states have internal predecessors, (1466), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (69), 59 states have call predecessors, (69), 59 states have call successors, (69) [2022-10-16 12:58:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1595 transitions. [2022-10-16 12:58:45,944 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1595 transitions. Word has length 131 [2022-10-16 12:58:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:45,945 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1595 transitions. [2022-10-16 12:58:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 12:58:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1595 transitions. [2022-10-16 12:58:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-16 12:58:45,948 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:45,949 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:45,990 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 12:58:46,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 12:58:46,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:46,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:46,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1767051934, now seen corresponding path program 1 times [2022-10-16 12:58:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:46,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335705743] [2022-10-16 12:58:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:46,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-16 12:58:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 12:58:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 12:58:46,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:46,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335705743] [2022-10-16 12:58:46,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335705743] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:46,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547254005] [2022-10-16 12:58:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:46,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:46,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:46,917 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 12:58:46,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 12:58:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:47,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2665 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 12:58:47,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-16 12:58:47,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:47,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547254005] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:47,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:58:47,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-10-16 12:58:47,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231876408] [2022-10-16 12:58:47,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:47,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:47,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 12:58:47,626 INFO L87 Difference]: Start difference. First operand 1290 states and 1595 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 12:58:47,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:47,728 INFO L93 Difference]: Finished difference Result 1395 states and 1740 transitions. [2022-10-16 12:58:47,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:47,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 134 [2022-10-16 12:58:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:47,737 INFO L225 Difference]: With dead ends: 1395 [2022-10-16 12:58:47,737 INFO L226 Difference]: Without dead ends: 1382 [2022-10-16 12:58:47,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 12:58:47,739 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 213 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:47,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 752 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-10-16 12:58:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1290. [2022-10-16 12:58:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1186 states have (on average 1.2360876897133222) internal successors, (1466), 1212 states have internal predecessors, (1466), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (69), 59 states have call predecessors, (69), 59 states have call successors, (69) [2022-10-16 12:58:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1595 transitions. [2022-10-16 12:58:47,823 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1595 transitions. Word has length 134 [2022-10-16 12:58:47,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:47,824 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1595 transitions. [2022-10-16 12:58:47,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 12:58:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1595 transitions. [2022-10-16 12:58:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-10-16 12:58:47,829 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:47,829 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:47,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-16 12:58:48,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:48,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1574294114, now seen corresponding path program 1 times [2022-10-16 12:58:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:48,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721189664] [2022-10-16 12:58:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:48,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:48,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721189664] [2022-10-16 12:58:48,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-16 12:58:48,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457615755] [2022-10-16 12:58:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:48,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:48,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:48,178 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:58:48,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 12:58:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:48,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 12:58:48,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-16 12:58:48,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:58:48,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457615755] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:48,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:48,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 12:58:48,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184142165] [2022-10-16 12:58:48,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:48,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:58:48,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:48,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:58:48,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:58:49,000 INFO L87 Difference]: Start difference. First operand 1290 states and 1595 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-16 12:58:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:49,130 INFO L93 Difference]: Finished difference Result 1395 states and 1740 transitions. [2022-10-16 12:58:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:58:49,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 157 [2022-10-16 12:58:49,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:49,138 INFO L225 Difference]: With dead ends: 1395 [2022-10-16 12:58:49,139 INFO L226 Difference]: Without dead ends: 1382 [2022-10-16 12:58:49,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:58:49,141 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 213 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:49,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 752 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:58:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-10-16 12:58:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1290. [2022-10-16 12:58:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1186 states have (on average 1.2360876897133222) internal successors, (1466), 1212 states have internal predecessors, (1466), 60 states have call successors, (60), 22 states have call predecessors, (60), 25 states have return successors, (69), 59 states have call predecessors, (69), 59 states have call successors, (69) [2022-10-16 12:58:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1595 transitions. [2022-10-16 12:58:49,241 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1595 transitions. Word has length 157 [2022-10-16 12:58:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:49,241 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1595 transitions. [2022-10-16 12:58:49,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-16 12:58:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1595 transitions. [2022-10-16 12:58:49,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-10-16 12:58:49,246 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:49,246 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:49,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:49,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 12:58:49,459 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1592350702, now seen corresponding path program 1 times [2022-10-16 12:58:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:49,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728450489] [2022-10-16 12:58:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:49,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-10-16 12:58:50,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:50,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728450489] [2022-10-16 12:58:50,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728450489] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:58:50,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810885175] [2022-10-16 12:58:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:50,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:50,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:58:50,252 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:58:50,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 12:58:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:51,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-16 12:58:51,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:58:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 12:58:51,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:58:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 12:58:51,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810885175] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 12:58:51,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 12:58:51,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 18 [2022-10-16 12:58:51,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432664280] [2022-10-16 12:58:51,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 12:58:51,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 12:58:51,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:51,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 12:58:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-10-16 12:58:51,432 INFO L87 Difference]: Start difference. First operand 1290 states and 1595 transitions. Second operand has 18 states, 18 states have (on average 13.11111111111111) internal successors, (236), 15 states have internal predecessors, (236), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 12:58:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:58:58,974 INFO L93 Difference]: Finished difference Result 10396 states and 13844 transitions. [2022-10-16 12:58:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-16 12:58:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.11111111111111) internal successors, (236), 15 states have internal predecessors, (236), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 139 [2022-10-16 12:58:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:58:59,028 INFO L225 Difference]: With dead ends: 10396 [2022-10-16 12:58:59,028 INFO L226 Difference]: Without dead ends: 9118 [2022-10-16 12:58:59,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2022-10-16 12:58:59,036 INFO L413 NwaCegarLoop]: 1872 mSDtfsCounter, 4273 mSDsluCounter, 12273 mSDsCounter, 0 mSdLazyCounter, 5868 mSolverCounterSat, 1609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4697 SdHoareTripleChecker+Valid, 14145 SdHoareTripleChecker+Invalid, 7477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1609 IncrementalHoareTripleChecker+Valid, 5868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:58:59,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4697 Valid, 14145 Invalid, 7477 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1609 Valid, 5868 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-10-16 12:58:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9118 states. [2022-10-16 12:58:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9118 to 2627. [2022-10-16 12:58:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2522 states have (on average 1.2275971451229184) internal successors, (3096), 2547 states have internal predecessors, (3096), 60 states have call successors, (60), 22 states have call predecessors, (60), 26 states have return successors, (71), 61 states have call predecessors, (71), 59 states have call successors, (71) [2022-10-16 12:58:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3227 transitions. [2022-10-16 12:58:59,380 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3227 transitions. Word has length 139 [2022-10-16 12:58:59,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:58:59,380 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 3227 transitions. [2022-10-16 12:58:59,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.11111111111111) internal successors, (236), 15 states have internal predecessors, (236), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 12:58:59,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3227 transitions. [2022-10-16 12:58:59,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-10-16 12:58:59,387 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:58:59,388 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:58:59,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 12:58:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:58:59,602 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:58:59,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:58:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1380201308, now seen corresponding path program 1 times [2022-10-16 12:58:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:58:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86717219] [2022-10-16 12:58:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:58:59,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:58:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:58:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:58:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:58:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:58:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:58:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-16 12:58:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 12:58:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-16 12:58:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:58:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:58:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-10-16 12:58:59,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:58:59,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86717219] [2022-10-16 12:58:59,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86717219] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:58:59,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:58:59,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 12:58:59,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128284860] [2022-10-16 12:58:59,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:58:59,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 12:58:59,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:58:59,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 12:58:59,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:58:59,942 INFO L87 Difference]: Start difference. First operand 2627 states and 3227 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 12:59:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:00,674 INFO L93 Difference]: Finished difference Result 5263 states and 6469 transitions. [2022-10-16 12:59:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 12:59:00,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 155 [2022-10-16 12:59:00,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:00,690 INFO L225 Difference]: With dead ends: 5263 [2022-10-16 12:59:00,690 INFO L226 Difference]: Without dead ends: 2642 [2022-10-16 12:59:00,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 12:59:00,697 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 107 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:00,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 993 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 12:59:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-10-16 12:59:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2627. [2022-10-16 12:59:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2522 states have (on average 1.2268041237113403) internal successors, (3094), 2547 states have internal predecessors, (3094), 60 states have call successors, (60), 22 states have call predecessors, (60), 26 states have return successors, (71), 61 states have call predecessors, (71), 59 states have call successors, (71) [2022-10-16 12:59:00,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3225 transitions. [2022-10-16 12:59:00,899 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3225 transitions. Word has length 155 [2022-10-16 12:59:00,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:00,900 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 3225 transitions. [2022-10-16 12:59:00,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 12:59:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3225 transitions. [2022-10-16 12:59:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-10-16 12:59:00,904 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:00,905 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:00,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-16 12:59:00,905 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting usb_alloc_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1378048706, now seen corresponding path program 1 times [2022-10-16 12:59:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:00,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432768647] [2022-10-16 12:59:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:00,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:01,009 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:01,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228567086] [2022-10-16 12:59:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:01,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:01,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:01,011 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:01,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 12:59:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:01,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2870 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 12:59:01,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-10-16 12:59:02,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:59:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:02,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432768647] [2022-10-16 12:59:02,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:02,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228567086] [2022-10-16 12:59:02,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228567086] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:59:02,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:59:02,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-16 12:59:02,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529908331] [2022-10-16 12:59:02,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:59:02,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:59:02,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:02,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:59:02,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:59:02,108 INFO L87 Difference]: Start difference. First operand 2627 states and 3225 transitions. Second operand has 3 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-10-16 12:59:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:02,455 INFO L93 Difference]: Finished difference Result 7851 states and 9655 transitions. [2022-10-16 12:59:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:59:02,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 164 [2022-10-16 12:59:02,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:02,484 INFO L225 Difference]: With dead ends: 7851 [2022-10-16 12:59:02,484 INFO L226 Difference]: Without dead ends: 5233 [2022-10-16 12:59:02,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:59:02,493 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 309 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:02,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1037 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:59:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2022-10-16 12:59:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 4148. [2022-10-16 12:59:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4148 states, 3961 states have (on average 1.2446351931330473) internal successors, (4930), 3991 states have internal predecessors, (4930), 117 states have call successors, (117), 43 states have call predecessors, (117), 51 states have return successors, (144), 120 states have call predecessors, (144), 116 states have call successors, (144) [2022-10-16 12:59:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4148 states to 4148 states and 5191 transitions. [2022-10-16 12:59:02,823 INFO L78 Accepts]: Start accepts. Automaton has 4148 states and 5191 transitions. Word has length 164 [2022-10-16 12:59:02,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:02,824 INFO L495 AbstractCegarLoop]: Abstraction has 4148 states and 5191 transitions. [2022-10-16 12:59:02,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-10-16 12:59:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4148 states and 5191 transitions. [2022-10-16 12:59:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-10-16 12:59:02,829 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:02,829 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:02,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:03,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 12:59:03,042 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting usb_alloc_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:03,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:03,043 INFO L85 PathProgramCache]: Analyzing trace with hash 230163310, now seen corresponding path program 1 times [2022-10-16 12:59:03,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:03,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315789169] [2022-10-16 12:59:03,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:03,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:03,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693407474] [2022-10-16 12:59:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:03,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:03,147 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:03,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 12:59:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:03,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 12:59:03,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-10-16 12:59:04,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:59:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:04,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315789169] [2022-10-16 12:59:04,200 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:04,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693407474] [2022-10-16 12:59:04,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693407474] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:59:04,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:59:04,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-16 12:59:04,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930170566] [2022-10-16 12:59:04,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:59:04,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:59:04,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:04,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:59:04,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:59:04,203 INFO L87 Difference]: Start difference. First operand 4148 states and 5191 transitions. Second operand has 3 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-10-16 12:59:04,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:04,755 INFO L93 Difference]: Finished difference Result 6758 states and 8404 transitions. [2022-10-16 12:59:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:59:04,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 165 [2022-10-16 12:59:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:04,776 INFO L225 Difference]: With dead ends: 6758 [2022-10-16 12:59:04,777 INFO L226 Difference]: Without dead ends: 6756 [2022-10-16 12:59:04,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:59:04,781 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 311 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:04,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 919 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:59:04,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6756 states. [2022-10-16 12:59:05,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6756 to 5673. [2022-10-16 12:59:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 5403 states have (on average 1.2533777531001296) internal successors, (6772), 5439 states have internal predecessors, (6772), 176 states have call successors, (176), 64 states have call predecessors, (176), 76 states have return successors, (218), 180 states have call predecessors, (218), 174 states have call successors, (218) [2022-10-16 12:59:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 7166 transitions. [2022-10-16 12:59:05,287 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 7166 transitions. Word has length 165 [2022-10-16 12:59:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:05,288 INFO L495 AbstractCegarLoop]: Abstraction has 5673 states and 7166 transitions. [2022-10-16 12:59:05,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 1 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-10-16 12:59:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 7166 transitions. [2022-10-16 12:59:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-10-16 12:59:05,293 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:05,293 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:05,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:05,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:05,508 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:05,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1922210757, now seen corresponding path program 1 times [2022-10-16 12:59:05,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:05,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659491009] [2022-10-16 12:59:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:05,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 12:59:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-16 12:59:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:59:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:59:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-16 12:59:06,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:59:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-16 12:59:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-10-16 12:59:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-16 12:59:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:59:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:59:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-10-16 12:59:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:59:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-10-16 12:59:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-10-16 12:59:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 12:59:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-10-16 12:59:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:06,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659491009] [2022-10-16 12:59:06,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659491009] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:59:06,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858380460] [2022-10-16 12:59:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:06,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:06,886 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:06,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 12:59:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:07,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2794 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 12:59:07,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-16 12:59:07,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:59:07,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858380460] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:59:07,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:59:07,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-10-16 12:59:07,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022441617] [2022-10-16 12:59:07,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:59:07,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:59:07,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:07,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:59:07,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:59:07,700 INFO L87 Difference]: Start difference. First operand 5673 states and 7166 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-16 12:59:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:08,150 INFO L93 Difference]: Finished difference Result 11349 states and 14335 transitions. [2022-10-16 12:59:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:59:08,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 168 [2022-10-16 12:59:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:08,166 INFO L225 Difference]: With dead ends: 11349 [2022-10-16 12:59:08,166 INFO L226 Difference]: Without dead ends: 5673 [2022-10-16 12:59:08,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:59:08,178 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:08,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 871 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:59:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5673 states. [2022-10-16 12:59:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5673 to 5673. [2022-10-16 12:59:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 5403 states have (on average 1.252267258930224) internal successors, (6766), 5439 states have internal predecessors, (6766), 176 states have call successors, (176), 64 states have call predecessors, (176), 76 states have return successors, (218), 180 states have call predecessors, (218), 174 states have call successors, (218) [2022-10-16 12:59:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 7160 transitions. [2022-10-16 12:59:08,639 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 7160 transitions. Word has length 168 [2022-10-16 12:59:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:08,640 INFO L495 AbstractCegarLoop]: Abstraction has 5673 states and 7160 transitions. [2022-10-16 12:59:08,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-16 12:59:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 7160 transitions. [2022-10-16 12:59:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-10-16 12:59:08,646 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:08,646 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:08,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:08,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:08,860 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting usb_free_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:08,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:08,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1857257996, now seen corresponding path program 1 times [2022-10-16 12:59:08,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:08,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383533585] [2022-10-16 12:59:08,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:08,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:08,967 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:08,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868916831] [2022-10-16 12:59:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:08,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:08,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:08,968 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:08,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 12:59:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:09,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2902 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 12:59:09,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-10-16 12:59:09,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:59:09,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383533585] [2022-10-16 12:59:09,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868916831] [2022-10-16 12:59:09,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868916831] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:59:09,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:59:09,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 12:59:09,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908951294] [2022-10-16 12:59:09,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:59:09,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:59:09,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:59:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:59:09,801 INFO L87 Difference]: Start difference. First operand 5673 states and 7160 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-16 12:59:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:10,267 INFO L93 Difference]: Finished difference Result 5961 states and 7575 transitions. [2022-10-16 12:59:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:59:10,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 177 [2022-10-16 12:59:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:10,284 INFO L225 Difference]: With dead ends: 5961 [2022-10-16 12:59:10,285 INFO L226 Difference]: Without dead ends: 5941 [2022-10-16 12:59:10,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:59:10,289 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 213 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:10,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 748 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:59:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2022-10-16 12:59:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 5673. [2022-10-16 12:59:10,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5673 states, 5403 states have (on average 1.252267258930224) internal successors, (6766), 5439 states have internal predecessors, (6766), 176 states have call successors, (176), 64 states have call predecessors, (176), 76 states have return successors, (218), 180 states have call predecessors, (218), 174 states have call successors, (218) [2022-10-16 12:59:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5673 states to 5673 states and 7160 transitions. [2022-10-16 12:59:10,774 INFO L78 Accepts]: Start accepts. Automaton has 5673 states and 7160 transitions. Word has length 177 [2022-10-16 12:59:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:10,775 INFO L495 AbstractCegarLoop]: Abstraction has 5673 states and 7160 transitions. [2022-10-16 12:59:10,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-16 12:59:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5673 states and 7160 transitions. [2022-10-16 12:59:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-10-16 12:59:10,781 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:10,781 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:10,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:10,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:10,995 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting usb_alloc_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2061788118, now seen corresponding path program 1 times [2022-10-16 12:59:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:10,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621440193] [2022-10-16 12:59:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:10,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:11,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:11,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313603771] [2022-10-16 12:59:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:11,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:11,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:11,157 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:11,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 12:59:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:12,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 12:59:12,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-16 12:59:12,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:59:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-10-16 12:59:12,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:12,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621440193] [2022-10-16 12:59:12,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:12,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313603771] [2022-10-16 12:59:12,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313603771] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 12:59:12,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 12:59:12,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-16 12:59:12,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895400214] [2022-10-16 12:59:12,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 12:59:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 12:59:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:12,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 12:59:12,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-10-16 12:59:12,584 INFO L87 Difference]: Start difference. First operand 5673 states and 7160 transitions. Second operand has 10 states, 9 states have (on average 25.22222222222222) internal successors, (227), 10 states have internal predecessors, (227), 7 states have call successors, (34), 6 states have call predecessors, (34), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 12:59:16,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:16,245 INFO L93 Difference]: Finished difference Result 23322 states and 29185 transitions. [2022-10-16 12:59:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 12:59:16,248 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 25.22222222222222) internal successors, (227), 10 states have internal predecessors, (227), 7 states have call successors, (34), 6 states have call predecessors, (34), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 184 [2022-10-16 12:59:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:16,309 INFO L225 Difference]: With dead ends: 23322 [2022-10-16 12:59:16,309 INFO L226 Difference]: Without dead ends: 20693 [2022-10-16 12:59:16,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2022-10-16 12:59:16,323 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 2532 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:16,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 2192 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-16 12:59:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20693 states. [2022-10-16 12:59:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20693 to 16348. [2022-10-16 12:59:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16348 states, 15496 states have (on average 1.2669721218378935) internal successors, (19633), 15575 states have internal predecessors, (19633), 575 states have call successors, (575), 211 states have call predecessors, (575), 259 states have return successors, (752), 593 states have call predecessors, (752), 573 states have call successors, (752) [2022-10-16 12:59:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16348 states to 16348 states and 20960 transitions. [2022-10-16 12:59:17,856 INFO L78 Accepts]: Start accepts. Automaton has 16348 states and 20960 transitions. Word has length 184 [2022-10-16 12:59:17,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:17,856 INFO L495 AbstractCegarLoop]: Abstraction has 16348 states and 20960 transitions. [2022-10-16 12:59:17,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 25.22222222222222) internal successors, (227), 10 states have internal predecessors, (227), 7 states have call successors, (34), 6 states have call predecessors, (34), 5 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2022-10-16 12:59:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 16348 states and 20960 transitions. [2022-10-16 12:59:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-10-16 12:59:17,863 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:17,864 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:17,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:18,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:18,078 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:18,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash 248942429, now seen corresponding path program 1 times [2022-10-16 12:59:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:18,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360763719] [2022-10-16 12:59:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:18,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:18,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347230315] [2022-10-16 12:59:18,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:18,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:18,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:18,233 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:18,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 12:59:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:19,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 12:59:19,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-16 12:59:19,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:59:19,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:19,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360763719] [2022-10-16 12:59:19,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:19,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347230315] [2022-10-16 12:59:19,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347230315] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:59:19,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:59:19,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 12:59:19,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923497556] [2022-10-16 12:59:19,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:59:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 12:59:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:19,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 12:59:19,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:59:19,323 INFO L87 Difference]: Start difference. First operand 16348 states and 20960 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-10-16 12:59:20,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:20,485 INFO L93 Difference]: Finished difference Result 32724 states and 41948 transitions. [2022-10-16 12:59:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 12:59:20,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 191 [2022-10-16 12:59:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:20,542 INFO L225 Difference]: With dead ends: 32724 [2022-10-16 12:59:20,543 INFO L226 Difference]: Without dead ends: 16348 [2022-10-16 12:59:20,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 12:59:20,573 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:20,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 871 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 12:59:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16348 states. [2022-10-16 12:59:22,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16348 to 16348. [2022-10-16 12:59:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16348 states, 15496 states have (on average 1.265681466184822) internal successors, (19613), 15575 states have internal predecessors, (19613), 575 states have call successors, (575), 211 states have call predecessors, (575), 259 states have return successors, (752), 593 states have call predecessors, (752), 573 states have call successors, (752) [2022-10-16 12:59:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16348 states to 16348 states and 20940 transitions. [2022-10-16 12:59:22,300 INFO L78 Accepts]: Start accepts. Automaton has 16348 states and 20940 transitions. Word has length 191 [2022-10-16 12:59:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:22,300 INFO L495 AbstractCegarLoop]: Abstraction has 16348 states and 20940 transitions. [2022-10-16 12:59:22,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-10-16 12:59:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 16348 states and 20940 transitions. [2022-10-16 12:59:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-10-16 12:59:22,308 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:22,308 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:22,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:22,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-16 12:59:22,523 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1733085805, now seen corresponding path program 1 times [2022-10-16 12:59:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:22,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10958365] [2022-10-16 12:59:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:22,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:22,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332066201] [2022-10-16 12:59:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:22,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:22,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:22,676 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:22,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 12:59:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:23,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 3252 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 12:59:23,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-10-16 12:59:23,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:59:23,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:23,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10958365] [2022-10-16 12:59:23,914 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:23,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332066201] [2022-10-16 12:59:23,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332066201] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:59:23,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:59:23,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 12:59:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439088211] [2022-10-16 12:59:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:59:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 12:59:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 12:59:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 12:59:23,917 INFO L87 Difference]: Start difference. First operand 16348 states and 20940 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-16 12:59:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:25,258 INFO L93 Difference]: Finished difference Result 33323 states and 42810 transitions. [2022-10-16 12:59:25,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 12:59:25,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 204 [2022-10-16 12:59:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:25,306 INFO L225 Difference]: With dead ends: 33323 [2022-10-16 12:59:25,307 INFO L226 Difference]: Without dead ends: 16987 [2022-10-16 12:59:25,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 12:59:25,336 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 174 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:25,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1779 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 12:59:25,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16987 states. [2022-10-16 12:59:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16987 to 16236. [2022-10-16 12:59:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16236 states, 15406 states have (on average 1.2652862521095678) internal successors, (19493), 15475 states have internal predecessors, (19493), 553 states have call successors, (553), 211 states have call predecessors, (553), 259 states have return successors, (726), 577 states have call predecessors, (726), 551 states have call successors, (726) [2022-10-16 12:59:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16236 states to 16236 states and 20772 transitions. [2022-10-16 12:59:26,872 INFO L78 Accepts]: Start accepts. Automaton has 16236 states and 20772 transitions. Word has length 204 [2022-10-16 12:59:26,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:26,873 INFO L495 AbstractCegarLoop]: Abstraction has 16236 states and 20772 transitions. [2022-10-16 12:59:26,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-16 12:59:26,873 INFO L276 IsEmpty]: Start isEmpty. Operand 16236 states and 20772 transitions. [2022-10-16 12:59:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-10-16 12:59:26,880 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:26,880 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:26,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:27,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-16 12:59:27,095 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:27,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:27,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1409679563, now seen corresponding path program 1 times [2022-10-16 12:59:27,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:27,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982382978] [2022-10-16 12:59:27,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:27,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:27,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:27,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676485483] [2022-10-16 12:59:27,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:27,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:27,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:27,221 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:27,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 12:59:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:28,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 3262 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-16 12:59:28,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-10-16 12:59:28,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:59:28,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:28,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982382978] [2022-10-16 12:59:28,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:28,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676485483] [2022-10-16 12:59:28,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676485483] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:59:28,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:59:28,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 12:59:28,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918539175] [2022-10-16 12:59:28,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:59:28,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 12:59:28,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 12:59:28,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 12:59:28,231 INFO L87 Difference]: Start difference. First operand 16236 states and 20772 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-16 12:59:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:29,681 INFO L93 Difference]: Finished difference Result 31450 states and 40331 transitions. [2022-10-16 12:59:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 12:59:29,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 206 [2022-10-16 12:59:29,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:29,718 INFO L225 Difference]: With dead ends: 31450 [2022-10-16 12:59:29,719 INFO L226 Difference]: Without dead ends: 16696 [2022-10-16 12:59:29,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 12:59:29,736 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 179 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:29,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1751 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 12:59:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16696 states. [2022-10-16 12:59:31,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16696 to 16132. [2022-10-16 12:59:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16132 states, 15320 states have (on average 1.2650783289817233) internal successors, (19381), 15381 states have internal predecessors, (19381), 535 states have call successors, (535), 211 states have call predecessors, (535), 259 states have return successors, (708), 563 states have call predecessors, (708), 533 states have call successors, (708) [2022-10-16 12:59:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16132 states to 16132 states and 20624 transitions. [2022-10-16 12:59:31,094 INFO L78 Accepts]: Start accepts. Automaton has 16132 states and 20624 transitions. Word has length 206 [2022-10-16 12:59:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:31,095 INFO L495 AbstractCegarLoop]: Abstraction has 16132 states and 20624 transitions. [2022-10-16 12:59:31,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-10-16 12:59:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 16132 states and 20624 transitions. [2022-10-16 12:59:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-10-16 12:59:31,179 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:31,180 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:31,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:31,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:31,381 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1531290328, now seen corresponding path program 1 times [2022-10-16 12:59:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:31,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719112998] [2022-10-16 12:59:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:31,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:31,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805092157] [2022-10-16 12:59:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:31,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:31,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:31,518 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:31,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 12:59:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:32,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 3263 conjuncts, 44 conjunts are in the unsatisfiable core [2022-10-16 12:59:32,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:32,742 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-10-16 12:59:32,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-10-16 12:59:33,433 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-16 12:59:33,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-10-16 12:59:33,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-10-16 12:59:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-16 12:59:33,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 12:59:33,821 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_10679 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_imon_probe_~context~7#1.base| v_ArrVal_10679) |c_~#descriptor___1~0.base|) (+ |c_~#descriptor___1~0.offset| 24)) 0)) is different from false [2022-10-16 12:59:33,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:33,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719112998] [2022-10-16 12:59:33,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:33,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805092157] [2022-10-16 12:59:33,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805092157] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 12:59:33,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 12:59:33,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-16 12:59:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582598698] [2022-10-16 12:59:33,837 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 12:59:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 12:59:33,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 12:59:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=218, Unknown=1, NotChecked=30, Total=306 [2022-10-16 12:59:33,838 INFO L87 Difference]: Start difference. First operand 16132 states and 20624 transitions. Second operand has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 11 states have internal predecessors, (136), 5 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2022-10-16 12:59:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:41,279 INFO L93 Difference]: Finished difference Result 49185 states and 63008 transitions. [2022-10-16 12:59:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 12:59:41,279 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 11 states have internal predecessors, (136), 5 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) Word has length 208 [2022-10-16 12:59:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:41,349 INFO L225 Difference]: With dead ends: 49185 [2022-10-16 12:59:41,349 INFO L226 Difference]: Without dead ends: 33065 [2022-10-16 12:59:41,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=572, Unknown=1, NotChecked=50, Total=756 [2022-10-16 12:59:41,376 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 523 mSDsluCounter, 3382 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:41,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 3862 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-10-16 12:59:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33065 states. [2022-10-16 12:59:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33065 to 17375. [2022-10-16 12:59:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17375 states, 16542 states have (on average 1.2660500544069642) internal successors, (20943), 16605 states have internal predecessors, (20943), 547 states have call successors, (547), 216 states have call predecessors, (547), 268 states have return successors, (730), 577 states have call predecessors, (730), 545 states have call successors, (730) [2022-10-16 12:59:43,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 22220 transitions. [2022-10-16 12:59:43,118 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 22220 transitions. Word has length 208 [2022-10-16 12:59:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:43,119 INFO L495 AbstractCegarLoop]: Abstraction has 17375 states and 22220 transitions. [2022-10-16 12:59:43,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.066666666666666) internal successors, (136), 11 states have internal predecessors, (136), 5 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2022-10-16 12:59:43,119 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 22220 transitions. [2022-10-16 12:59:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-10-16 12:59:43,126 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:43,126 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:43,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-10-16 12:59:43,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:43,340 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash -719384409, now seen corresponding path program 1 times [2022-10-16 12:59:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:43,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977573917] [2022-10-16 12:59:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:43,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:43,477 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:43,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538741516] [2022-10-16 12:59:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:43,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:43,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:43,479 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:43,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 12:59:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 12:59:44,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 3273 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 12:59:44,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 12:59:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-10-16 12:59:44,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 12:59:44,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 12:59:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977573917] [2022-10-16 12:59:44,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 12:59:44,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538741516] [2022-10-16 12:59:44,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538741516] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 12:59:44,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 12:59:44,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-16 12:59:44,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625762859] [2022-10-16 12:59:44,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 12:59:44,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 12:59:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 12:59:44,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 12:59:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-16 12:59:44,701 INFO L87 Difference]: Start difference. First operand 17375 states and 22220 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 7 states have internal predecessors, (134), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-16 12:59:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 12:59:46,216 INFO L93 Difference]: Finished difference Result 32625 states and 41848 transitions. [2022-10-16 12:59:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 12:59:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 7 states have internal predecessors, (134), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) Word has length 208 [2022-10-16 12:59:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 12:59:46,258 INFO L225 Difference]: With dead ends: 32625 [2022-10-16 12:59:46,258 INFO L226 Difference]: Without dead ends: 17961 [2022-10-16 12:59:46,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-10-16 12:59:46,278 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 181 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 4099 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 12:59:46,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 4099 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 12:59:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17961 states. [2022-10-16 12:59:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17961 to 17425. [2022-10-16 12:59:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17425 states, 16582 states have (on average 1.265408274032083) internal successors, (20983), 16635 states have internal predecessors, (20983), 547 states have call successors, (547), 216 states have call predecessors, (547), 278 states have return successors, (740), 597 states have call predecessors, (740), 545 states have call successors, (740) [2022-10-16 12:59:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17425 states to 17425 states and 22270 transitions. [2022-10-16 12:59:47,925 INFO L78 Accepts]: Start accepts. Automaton has 17425 states and 22270 transitions. Word has length 208 [2022-10-16 12:59:47,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 12:59:47,925 INFO L495 AbstractCegarLoop]: Abstraction has 17425 states and 22270 transitions. [2022-10-16 12:59:47,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 7 states have internal predecessors, (134), 2 states have call successors, (18), 2 states have call predecessors, (18), 5 states have return successors, (19), 5 states have call predecessors, (19), 2 states have call successors, (19) [2022-10-16 12:59:47,926 INFO L276 IsEmpty]: Start isEmpty. Operand 17425 states and 22270 transitions. [2022-10-16 12:59:47,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-10-16 12:59:47,935 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 12:59:47,935 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 12:59:47,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 12:59:48,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 12:59:48,151 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [usb_fill_int_urbErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, usb_fill_int_urbErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-10-16 12:59:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 12:59:48,152 INFO L85 PathProgramCache]: Analyzing trace with hash -639889753, now seen corresponding path program 2 times [2022-10-16 12:59:48,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 12:59:48,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181408455] [2022-10-16 12:59:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 12:59:48,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 12:59:48,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 12:59:48,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741162893] [2022-10-16 12:59:48,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 12:59:48,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 12:59:48,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 12:59:48,253 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 12:59:48,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process