/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--iowarrior.ko.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:43:00,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:43:00,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:43:00,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:43:00,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:43:00,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:43:00,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:43:00,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:43:00,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:43:00,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:43:00,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:43:00,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:43:00,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:43:00,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:43:00,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:43:00,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:43:00,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:43:00,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:43:00,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:43:00,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:43:00,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:43:00,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:43:00,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:43:00,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:43:00,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:43:00,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:43:00,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:43:00,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:43:00,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:43:00,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:43:00,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:43:00,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:43:00,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:43:00,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:43:00,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:43:00,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:43:00,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:43:00,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:43:00,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:43:00,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:43:00,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:43:00,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2022-09-16 12:43:00,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:43:00,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:43:00,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 12:43:00,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 12:43:00,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:43:00,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:43:00,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:43:00,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:43:00,717 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:43:00,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:43:00,718 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:43:00,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:43:00,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:43:00,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:43:00,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:43:00,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:43:00,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:43:00,719 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:43:00,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:43:00,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:43:00,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:43:00,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:43:00,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:43:00,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:43:00,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:43:00,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:43:00,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:43:00,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:43:00,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:43:00,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:43:00,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:43:00,722 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:43:00,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-16 12:43:00,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 12:43:00,722 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-09-16 12:43:00,722 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-09-16 12:43:00,723 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:43:00,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:43:00,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:43:00,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:43:00,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:43:00,993 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:43:00,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--iowarrior.ko.cil.i [2022-09-16 12:43:01,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc50d6067/4f4bfa03d9144687a84677633bf8554d/FLAG1277e9504 [2022-09-16 12:43:01,750 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:43:01,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--iowarrior.ko.cil.i [2022-09-16 12:43:01,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc50d6067/4f4bfa03d9144687a84677633bf8554d/FLAG1277e9504 [2022-09-16 12:43:02,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc50d6067/4f4bfa03d9144687a84677633bf8554d [2022-09-16 12:43:02,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:43:02,046 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:43:02,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:43:02,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:43:02,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:43:02,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:43:02" (1/1) ... [2022-09-16 12:43:02,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21793da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:02, skipping insertion in model container [2022-09-16 12:43:02,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:43:02" (1/1) ... [2022-09-16 12:43:02,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:43:02,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:43:03,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--iowarrior.ko.cil.i[178781,178794] [2022-09-16 12:43:03,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:43:03,618 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:43:03,949 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--iowarrior.ko.cil.i[178781,178794] [2022-09-16 12:43:03,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:43:04,048 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:43:04,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04 WrapperNode [2022-09-16 12:43:04,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:43:04,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:43:04,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:43:04,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:43:04,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,310 INFO L138 Inliner]: procedures = 301, calls = 1106, calls flagged for inlining = 393, calls inlined = 454, statements flattened = 4677 [2022-09-16 12:43:04,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:43:04,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:43:04,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:43:04,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:43:04,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:43:04,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:43:04,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:43:04,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:43:04,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (1/1) ... [2022-09-16 12:43:04,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:43:04,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:43:04,615 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) [2022-09-16 12:43:04,638 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 [2022-09-16 12:43:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_insmod_4 [2022-09-16 12:43:04,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_insmod_4 [2022-09-16 12:43:04,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_scenario_3 [2022-09-16 12:43:04,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_scenario_3 [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:43:04,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-09-16 12:43:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_character_driver_scenario_2 [2022-09-16 12:43:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_character_driver_scenario_2 [2022-09-16 12:43:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:43:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:43:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:43:04,657 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 12:43:05,201 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:43:05,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:43:08,632 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:43:08,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:43:08,667 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-16 12:43:08,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:43:08 BoogieIcfgContainer [2022-09-16 12:43:08,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:43:08,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:43:08,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:43:08,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:43:08,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:43:02" (1/3) ... [2022-09-16 12:43:08,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef3b3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:43:08, skipping insertion in model container [2022-09-16 12:43:08,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:43:04" (2/3) ... [2022-09-16 12:43:08,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef3b3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:43:08, skipping insertion in model container [2022-09-16 12:43:08,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:43:08" (3/3) ... [2022-09-16 12:43:08,682 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14--drivers--usb--misc--iowarrior.ko.cil.i [2022-09-16 12:43:08,689 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 12:43:08,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:43:08,697 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2022-09-16 12:43:08,697 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:43:09,594 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-09-16 12:43:09,775 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:43:09,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-16 12:43:09,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:43:09,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-16 12:43:09,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-09-16 12:43:09,805 INFO L156 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-16 12:43:09,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ldv_character_driver_scenario_2Thread1of1ForFork1 ======== [2022-09-16 12:43:09,822 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=PARTIAL_ORDER_FA, 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;@4e7446f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:43:09,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-09-16 12:43:26,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_character_driver_scenario_2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-09-16 12:43:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:43:26,351 INFO L85 PathProgramCache]: Analyzing trace with hash -787211680, now seen corresponding path program 1 times [2022-09-16 12:43:26,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:43:26,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619949630] [2022-09-16 12:43:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:43:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:43:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:43:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2900 trivial. 0 not checked. [2022-09-16 12:43:28,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:43:28,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619949630] [2022-09-16 12:43:28,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619949630] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:43:28,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:43:28,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 12:43:28,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899760503] [2022-09-16 12:43:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:43:28,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-16 12:43:28,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:43:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-16 12:43:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-16 12:43:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:43:29,022 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-16 12:43:29,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1071.5) internal successors, (2143), 2 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:43:29,026 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:43:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:43:34,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:43:34,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_character_driver_scenario_2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-09-16 12:43:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:43:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1869029889, now seen corresponding path program 1 times [2022-09-16 12:43:34,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:43:34,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457215900] [2022-09-16 12:43:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:43:34,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:43:34,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-09-16 12:43:34,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544354245] [2022-09-16 12:43:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:43:34,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:43:34,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:43:34,591 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) [2022-09-16 12:43:34,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 12:43:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:43:36,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 7015 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-16 12:43:36,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:43:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2823 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2823 trivial. 0 not checked. [2022-09-16 12:43:36,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:43:36,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:43:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457215900] [2022-09-16 12:43:36,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-09-16 12:43:36,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544354245] [2022-09-16 12:43:36,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544354245] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:43:36,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:43:36,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-16 12:43:36,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071065730] [2022-09-16 12:43:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:43:36,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 12:43:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:43:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 12:43:36,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-09-16 12:43:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:43:36,861 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-16 12:43:36,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 110.10526315789474) internal successors, (2092), 19 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:43:36,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:43:36,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:43:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:43:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 12:43:53,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 12:43:53,956 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,SelfDestructingSolverStorable1 [2022-09-16 12:43:53,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_character_driver_scenario_2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-09-16 12:43:53,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:43:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash 690398679, now seen corresponding path program 1 times [2022-09-16 12:43:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:43:53,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115306917] [2022-09-16 12:43:53,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:43:53,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:43:54,330 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-09-16 12:43:54,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844935321] [2022-09-16 12:43:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:43:54,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:43:54,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:43:54,333 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) [2022-09-16 12:43:54,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 12:43:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:43:56,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 9783 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 12:43:56,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:44:00,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:44:00,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:44:00,822 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 14 treesize of output 16 [2022-09-16 12:44:01,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:44:01,505 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 14 treesize of output 16 [2022-09-16 12:44:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 1165 proven. 164 refuted. 0 times theorem prover too weak. 3095 trivial. 0 not checked. [2022-09-16 12:44:01,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:44:02,001 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_933 (Array Int Int))) (not (= (select (select (store |c_#pthreadsMutex| |c_~#pmutex_iowarrior_mutex~0.base| v_ArrVal_933) |c_~#pmutex_iowarrior_open_disc_lock~0.base|) |c_~#pmutex_iowarrior_open_disc_lock~0.offset|) 0))) is different from false [2022-09-16 12:44:02,260 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:44:02,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 19 treesize of output 20 [2022-09-16 12:44:02,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2022-09-16 12:44:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4424 backedges. 1003 proven. 164 refuted. 0 times theorem prover too weak. 3095 trivial. 162 not checked. [2022-09-16 12:44:04,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:44:04,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115306917] [2022-09-16 12:44:04,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-09-16 12:44:04,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844935321] [2022-09-16 12:44:04,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844935321] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:44:04,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-09-16 12:44:04,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-09-16 12:44:04,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205032941] [2022-09-16 12:44:04,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-09-16 12:44:04,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 12:44:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:44:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 12:44:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=36, Unknown=1, NotChecked=12, Total=72 [2022-09-16 12:44:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:04,011 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-16 12:44:04,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 523.7777777777778) internal successors, (4714), 9 states have internal predecessors, (4714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:44:04,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:04,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2022-09-16 12:44:04,014 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 12:44:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:44:14,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 12:44:14,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:44:14,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_character_driver_scenario_2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-09-16 12:44:14,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:44:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1861894076, now seen corresponding path program 1 times [2022-09-16 12:44:14,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:44:14,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782750518] [2022-09-16 12:44:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:44:14,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:44:14,709 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-09-16 12:44:14,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630831710] [2022-09-16 12:44:14,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:44:14,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:44:14,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:44:14,712 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) [2022-09-16 12:44:14,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 12:44:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:44:17,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 13325 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 12:44:17,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:44:17,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:44:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9171 backedges. 2357 proven. 0 refuted. 0 times theorem prover too weak. 6814 trivial. 0 not checked. [2022-09-16 12:44:17,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:44:17,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:44:17,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782750518] [2022-09-16 12:44:17,599 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-09-16 12:44:17,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630831710] [2022-09-16 12:44:17,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630831710] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:44:17,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:44:17,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:44:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086227518] [2022-09-16 12:44:17,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:44:17,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 12:44:17,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:44:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 12:44:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 12:44:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:17,606 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-16 12:44:17,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1016.6666666666666) internal successors, (3050), 3 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:44:17,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:17,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2022-09-16 12:44:17,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:44:17,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 12:44:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:44:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 12:44:18,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 12:44:18,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:44:18,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_character_driver_scenario_2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-09-16 12:44:18,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:44:18,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1773654055, now seen corresponding path program 2 times [2022-09-16 12:44:18,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:44:18,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946708218] [2022-09-16 12:44:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:44:18,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:44:19,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-09-16 12:44:19,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622299724] [2022-09-16 12:44:19,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:44:19,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:44:19,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:44:19,016 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) [2022-09-16 12:44:19,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 12:44:20,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:44:20,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:44:20,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 3816 conjuncts, 22 conjunts are in the unsatisfiable core [2022-09-16 12:44:20,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:44:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5961 backedges. 649 proven. 0 refuted. 0 times theorem prover too weak. 5312 trivial. 0 not checked. [2022-09-16 12:44:20,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:44:20,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:44:20,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946708218] [2022-09-16 12:44:20,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-09-16 12:44:20,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622299724] [2022-09-16 12:44:20,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622299724] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:44:20,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:44:20,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-09-16 12:44:20,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839406680] [2022-09-16 12:44:20,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:44:20,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-16 12:44:20,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:44:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-16 12:44:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2022-09-16 12:44:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:20,905 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-16 12:44:20,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 140.0) internal successors, (2800), 20 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:44:20,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:20,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2022-09-16 12:44:20,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:44:20,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-16 12:44:20,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:44:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 12:44:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:44:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 12:44:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 12:44:24,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 12:44:24,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:44:24,300 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_character_driver_scenario_2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-09-16 12:44:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:44:24,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1460162044, now seen corresponding path program 1 times [2022-09-16 12:44:24,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:44:24,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995478467] [2022-09-16 12:44:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:44:24,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:44:24,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-09-16 12:44:24,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250001131] [2022-09-16 12:44:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:44:24,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:44:24,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:44:24,645 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) [2022-09-16 12:44:24,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 12:44:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:44:27,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 17715 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-16 12:44:27,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:45:22,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:45:22,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:45:22,484 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 14 treesize of output 16 [2022-09-16 12:45:22,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:45:22,547 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 14 treesize of output 16 [2022-09-16 12:45:23,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:45:23,007 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 14 treesize of output 16 [2022-09-16 12:45:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21030 backedges. 1999 proven. 2136 refuted. 0 times theorem prover too weak. 16895 trivial. 0 not checked. [2022-09-16 12:45:23,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:45:23,406 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3372 (Array Int Int))) (not (= 0 (select (select (store |c_#pthreadsMutex| |c_~#pmutex_iowarrior_mutex~0.base| v_ArrVal_3372) |c_~#pmutex_iowarrior_open_disc_lock~0.base|) |c_~#pmutex_iowarrior_open_disc_lock~0.offset|)))) is different from false [2022-09-16 12:45:23,630 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3372 (Array Int Int)) (v_ArrVal_3370 (Array Int Int))) (not (= (select (select (store (store |c_#pthreadsMutex| |c_~#pmutex_mutex_of_iowarrior~0.base| v_ArrVal_3370) |c_~#pmutex_iowarrior_mutex~0.base| v_ArrVal_3372) |c_~#pmutex_iowarrior_open_disc_lock~0.base|) |c_~#pmutex_iowarrior_open_disc_lock~0.offset|) 0))) is different from false [2022-09-16 12:45:23,636 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:45:23,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 22 treesize of output 23 [2022-09-16 12:45:23,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 119 [2022-09-16 12:45:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 21030 backedges. 1996 proven. 956 refuted. 0 times theorem prover too weak. 16895 trivial. 1183 not checked. [2022-09-16 12:45:57,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:45:57,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995478467] [2022-09-16 12:45:57,653 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-09-16 12:45:57,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250001131] [2022-09-16 12:45:57,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250001131] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:45:57,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-09-16 12:45:57,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-09-16 12:45:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370998176] [2022-09-16 12:45:57,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-09-16 12:45:57,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-16 12:45:57,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:45:57,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-16 12:45:57,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=88, Unknown=2, NotChecked=42, Total=182 [2022-09-16 12:45:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:45:57,665 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-16 12:45:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 382.92857142857144) internal successors, (5361), 14 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:45:57,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-16 12:45:57,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 39 states. [2022-09-16 12:45:57,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:45:57,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-16 12:45:57,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 58 states. [2022-09-16 12:45:57,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.