/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:20:46,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:20:46,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:20:46,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:20:46,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:20:46,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:20:46,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:20:46,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:20:46,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:20:46,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:20:46,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:20:46,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:20:46,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:20:46,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:20:46,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:20:46,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:20:46,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:20:46,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:20:46,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:20:46,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:20:46,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:20:46,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:20:46,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:20:46,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:20:46,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:20:46,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:20:46,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:20:46,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:20:46,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:20:46,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:20:46,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:20:46,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:20:46,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:20:46,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:20:46,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:20:46,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:20:46,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:20:46,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:20:46,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:20:46,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:20:46,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:20:46,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:20:46,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:20:46,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:20:46,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:20:46,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:20:46,529 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:20:46,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:20:46,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:20:46,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:20:46,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:20:46,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:20:46,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:20:46,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:20:46,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:20:46,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:20:46,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:20:46,534 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:20:46,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:20:46,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:20:46,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:20:46,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:20:46,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:20:46,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:20:46,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:20:46,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:20:46,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:20:46,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:20:46,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:46,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:20:46,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:20:46,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:20:46,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:20:46,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:20:47,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:20:47,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:20:47,009 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:20:47,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-20 11:20:47,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66891f02d/875da6541e5843019842db605ffa3d49/FLAG6f77b82d2 [2020-07-20 11:20:47,693 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:20:47,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-20 11:20:47,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66891f02d/875da6541e5843019842db605ffa3d49/FLAG6f77b82d2 [2020-07-20 11:20:47,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66891f02d/875da6541e5843019842db605ffa3d49 [2020-07-20 11:20:47,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:20:47,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:20:47,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:20:47,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:20:47,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:20:47,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:20:47" (1/1) ... [2020-07-20 11:20:47,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efca680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:47, skipping insertion in model container [2020-07-20 11:20:47,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:20:47" (1/1) ... [2020-07-20 11:20:47,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:20:48,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:20:48,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:20:48,376 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:20:48,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:20:48,587 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:20:48,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48 WrapperNode [2020-07-20 11:20:48,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:20:48,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:20:48,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:20:48,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:20:48,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (1/1) ... [2020-07-20 11:20:48,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (1/1) ... [2020-07-20 11:20:48,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (1/1) ... [2020-07-20 11:20:48,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (1/1) ... [2020-07-20 11:20:48,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (1/1) ... [2020-07-20 11:20:48,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (1/1) ... [2020-07-20 11:20:48,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (1/1) ... [2020-07-20 11:20:48,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:20:48,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:20:48,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:20:48,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:20:48,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:20:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:20:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:20:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-07-20 11:20:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-07-20 11:20:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-07-20 11:20:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:20:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-07-20 11:20:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-07-20 11:20:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-07-20 11:20:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-07-20 11:20:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-07-20 11:20:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-07-20 11:20:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-07-20 11:20:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-07-20 11:20:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-07-20 11:20:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-07-20 11:20:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-07-20 11:20:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-07-20 11:20:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:20:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 11:20:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:20:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-20 11:20:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-07-20 11:20:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-07-20 11:20:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-07-20 11:20:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-07-20 11:20:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-07-20 11:20:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-07-20 11:20:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-07-20 11:20:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-07-20 11:20:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-07-20 11:20:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-07-20 11:20:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-07-20 11:20:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-07-20 11:20:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-07-20 11:20:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-07-20 11:20:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:20:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-07-20 11:20:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:20:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:20:49,134 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 11:20:49,235 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-20 11:20:49,236 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-20 11:20:49,271 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 11:20:49,422 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-07-20 11:20:49,423 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-07-20 11:20:49,425 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 11:20:49,492 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-20 11:20:49,493 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-20 11:20:49,505 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 11:20:49,564 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-20 11:20:49,565 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-20 11:20:49,704 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 11:20:49,742 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-07-20 11:20:49,742 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-07-20 11:20:49,781 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 11:20:49,934 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-07-20 11:20:49,934 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-07-20 11:20:49,961 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:20:49,961 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:20:49,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:20:49 BoogieIcfgContainer [2020-07-20 11:20:49,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:20:49,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:20:49,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:20:49,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:20:49,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:20:47" (1/3) ... [2020-07-20 11:20:49,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210f1419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:20:49, skipping insertion in model container [2020-07-20 11:20:49,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:20:48" (2/3) ... [2020-07-20 11:20:49,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210f1419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:20:49, skipping insertion in model container [2020-07-20 11:20:49,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:20:49" (3/3) ... [2020-07-20 11:20:49,989 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-07-20 11:20:50,008 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:20:50,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:20:50,051 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:20:50,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:20:50,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:20:50,097 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:20:50,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:20:50,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:20:50,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:20:50,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:20:50,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:20:50,142 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-07-20 11:20:50,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 11:20:50,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:50,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:50,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:50,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:50,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-07-20 11:20:50,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:50,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731745332] [2020-07-20 11:20:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:50,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:20:50,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:50,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:50,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731745332] [2020-07-20 11:20:50,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:50,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:50,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87642681] [2020-07-20 11:20:50,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:50,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:50,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:50,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:50,600 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 3 states. [2020-07-20 11:20:50,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:50,751 INFO L93 Difference]: Finished difference Result 390 states and 586 transitions. [2020-07-20 11:20:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:50,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 11:20:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:50,776 INFO L225 Difference]: With dead ends: 390 [2020-07-20 11:20:50,776 INFO L226 Difference]: Without dead ends: 231 [2020-07-20 11:20:50,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:50,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-07-20 11:20:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-07-20 11:20:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-20 11:20:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-07-20 11:20:50,908 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-07-20 11:20:50,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:50,911 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-07-20 11:20:50,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:50,911 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-07-20 11:20:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 11:20:50,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:50,917 INFO L422 BasicCegarLoop]: 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] [2020-07-20 11:20:51,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:51,134 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:51,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-07-20 11:20:51,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:51,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014749301] [2020-07-20 11:20:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:51,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 11:20:51,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:51,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:51,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014749301] [2020-07-20 11:20:51,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:51,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:51,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030020944] [2020-07-20 11:20:51,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:51,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:51,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:51,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:51,411 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 3 states. [2020-07-20 11:20:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:51,683 INFO L93 Difference]: Finished difference Result 375 states and 514 transitions. [2020-07-20 11:20:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:51,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 11:20:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:51,691 INFO L225 Difference]: With dead ends: 375 [2020-07-20 11:20:51,692 INFO L226 Difference]: Without dead ends: 314 [2020-07-20 11:20:51,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:51,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-20 11:20:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 298. [2020-07-20 11:20:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-07-20 11:20:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 408 transitions. [2020-07-20 11:20:51,748 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 408 transitions. Word has length 28 [2020-07-20 11:20:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:51,749 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 408 transitions. [2020-07-20 11:20:51,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 408 transitions. [2020-07-20 11:20:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 11:20:51,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:51,752 INFO L422 BasicCegarLoop]: 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] [2020-07-20 11:20:51,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:51,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:51,968 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-07-20 11:20:51,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:51,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739554557] [2020-07-20 11:20:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:52,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:20:52,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:52,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:52,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739554557] [2020-07-20 11:20:52,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:52,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:52,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273270929] [2020-07-20 11:20:52,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:52,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:52,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:52,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:52,211 INFO L87 Difference]: Start difference. First operand 298 states and 408 transitions. Second operand 3 states. [2020-07-20 11:20:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:52,263 INFO L93 Difference]: Finished difference Result 481 states and 640 transitions. [2020-07-20 11:20:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:52,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 11:20:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:52,270 INFO L225 Difference]: With dead ends: 481 [2020-07-20 11:20:52,270 INFO L226 Difference]: Without dead ends: 362 [2020-07-20 11:20:52,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-07-20 11:20:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 338. [2020-07-20 11:20:52,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-20 11:20:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 459 transitions. [2020-07-20 11:20:52,311 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 459 transitions. Word has length 28 [2020-07-20 11:20:52,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:52,311 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 459 transitions. [2020-07-20 11:20:52,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:52,312 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 459 transitions. [2020-07-20 11:20:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:20:52,316 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:52,319 INFO L422 BasicCegarLoop]: 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] [2020-07-20 11:20:52,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:52,534 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:52,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-07-20 11:20:52,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:52,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289474051] [2020-07-20 11:20:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:52,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:20:52,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:52,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:52,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289474051] [2020-07-20 11:20:52,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:52,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:52,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821361443] [2020-07-20 11:20:52,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:52,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:52,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:52,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:52,715 INFO L87 Difference]: Start difference. First operand 338 states and 459 transitions. Second operand 3 states. [2020-07-20 11:20:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:52,835 INFO L93 Difference]: Finished difference Result 341 states and 461 transitions. [2020-07-20 11:20:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:52,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-20 11:20:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:52,841 INFO L225 Difference]: With dead ends: 341 [2020-07-20 11:20:52,841 INFO L226 Difference]: Without dead ends: 337 [2020-07-20 11:20:52,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-20 11:20:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-20 11:20:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-20 11:20:52,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 456 transitions. [2020-07-20 11:20:52,869 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 456 transitions. Word has length 38 [2020-07-20 11:20:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:52,869 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 456 transitions. [2020-07-20 11:20:52,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 456 transitions. [2020-07-20 11:20:52,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 11:20:52,874 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:52,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:53,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:53,091 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:53,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:53,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-07-20 11:20:53,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:53,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711346508] [2020-07-20 11:20:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:53,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:20:53,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:53,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:53,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711346508] [2020-07-20 11:20:53,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:53,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:53,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260995922] [2020-07-20 11:20:53,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:53,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:53,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:53,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:53,315 INFO L87 Difference]: Start difference. First operand 337 states and 456 transitions. Second operand 3 states. [2020-07-20 11:20:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:53,385 INFO L93 Difference]: Finished difference Result 388 states and 513 transitions. [2020-07-20 11:20:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:53,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 11:20:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:53,390 INFO L225 Difference]: With dead ends: 388 [2020-07-20 11:20:53,390 INFO L226 Difference]: Without dead ends: 319 [2020-07-20 11:20:53,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-07-20 11:20:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 298. [2020-07-20 11:20:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-07-20 11:20:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 399 transitions. [2020-07-20 11:20:53,412 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 399 transitions. Word has length 46 [2020-07-20 11:20:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:53,413 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 399 transitions. [2020-07-20 11:20:53,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 399 transitions. [2020-07-20 11:20:53,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:20:53,420 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:53,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:53,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:53,640 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:53,641 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-07-20 11:20:53,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:53,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599775796] [2020-07-20 11:20:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:53,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:20:53,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:53,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:53,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599775796] [2020-07-20 11:20:53,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:53,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:53,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229662391] [2020-07-20 11:20:53,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:53,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:53,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:53,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:53,822 INFO L87 Difference]: Start difference. First operand 298 states and 399 transitions. Second operand 3 states. [2020-07-20 11:20:53,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:53,856 INFO L93 Difference]: Finished difference Result 310 states and 414 transitions. [2020-07-20 11:20:53,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:53,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-07-20 11:20:53,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:53,860 INFO L225 Difference]: With dead ends: 310 [2020-07-20 11:20:53,860 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 11:20:53,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:53,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 11:20:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 264. [2020-07-20 11:20:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-07-20 11:20:53,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 357 transitions. [2020-07-20 11:20:53,880 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 357 transitions. Word has length 45 [2020-07-20 11:20:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:53,880 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 357 transitions. [2020-07-20 11:20:53,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 357 transitions. [2020-07-20 11:20:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 11:20:53,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:53,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:54,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:54,098 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:54,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-07-20 11:20:54,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:54,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110166898] [2020-07-20 11:20:54,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:54,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:20:54,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:54,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:54,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110166898] [2020-07-20 11:20:54,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:54,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:54,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519492719] [2020-07-20 11:20:54,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:54,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:54,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:54,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:54,255 INFO L87 Difference]: Start difference. First operand 264 states and 357 transitions. Second operand 3 states. [2020-07-20 11:20:54,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:54,349 INFO L93 Difference]: Finished difference Result 284 states and 378 transitions. [2020-07-20 11:20:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:54,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 11:20:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:54,353 INFO L225 Difference]: With dead ends: 284 [2020-07-20 11:20:54,353 INFO L226 Difference]: Without dead ends: 242 [2020-07-20 11:20:54,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:54,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-07-20 11:20:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-07-20 11:20:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-07-20 11:20:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-07-20 11:20:54,371 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-07-20 11:20:54,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:54,372 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-07-20 11:20:54,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-07-20 11:20:54,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 11:20:54,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:54,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:54,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:54,591 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-07-20 11:20:54,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:54,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122773202] [2020-07-20 11:20:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:54,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:20:54,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:54,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:54,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122773202] [2020-07-20 11:20:54,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:54,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:54,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573507726] [2020-07-20 11:20:54,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:54,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:54,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:54,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:54,785 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 3 states. [2020-07-20 11:20:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:54,860 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-07-20 11:20:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:54,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-20 11:20:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:54,863 INFO L225 Difference]: With dead ends: 270 [2020-07-20 11:20:54,864 INFO L226 Difference]: Without dead ends: 240 [2020-07-20 11:20:54,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-07-20 11:20:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-07-20 11:20:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-20 11:20:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-07-20 11:20:54,882 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-07-20 11:20:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:54,882 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-07-20 11:20:54,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-07-20 11:20:54,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 11:20:54,884 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:54,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:55,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:55,099 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:55,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-07-20 11:20:55,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:55,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811424827] [2020-07-20 11:20:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:55,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:20:55,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:55,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:55,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811424827] [2020-07-20 11:20:55,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:55,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:20:55,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109160785] [2020-07-20 11:20:55,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:20:55,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:55,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:20:55,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:20:55,304 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 6 states. [2020-07-20 11:20:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:55,742 INFO L93 Difference]: Finished difference Result 281 states and 363 transitions. [2020-07-20 11:20:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:20:55,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-20 11:20:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:55,745 INFO L225 Difference]: With dead ends: 281 [2020-07-20 11:20:55,746 INFO L226 Difference]: Without dead ends: 240 [2020-07-20 11:20:55,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:20:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-07-20 11:20:55,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-07-20 11:20:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-20 11:20:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-07-20 11:20:55,765 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 51 [2020-07-20 11:20:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:55,765 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-07-20 11:20:55,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:20:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-07-20 11:20:55,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 11:20:55,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:55,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:55,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:55,984 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:55,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:55,985 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-07-20 11:20:55,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:55,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297170933] [2020-07-20 11:20:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:56,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 11:20:56,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:56,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:56,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297170933] [2020-07-20 11:20:56,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:56,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 11:20:56,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949596547] [2020-07-20 11:20:56,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:20:56,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:56,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:20:56,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:20:56,197 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 8 states. [2020-07-20 11:20:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:56,334 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-07-20 11:20:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:20:56,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-20 11:20:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:56,336 INFO L225 Difference]: With dead ends: 252 [2020-07-20 11:20:56,337 INFO L226 Difference]: Without dead ends: 211 [2020-07-20 11:20:56,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:20:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-20 11:20:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-07-20 11:20:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-20 11:20:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-07-20 11:20:56,355 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-07-20 11:20:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:56,355 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-07-20 11:20:56,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:20:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-07-20 11:20:56,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 11:20:56,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:56,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:56,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:56,573 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:56,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-07-20 11:20:56,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:56,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722660807] [2020-07-20 11:20:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:56,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 11:20:56,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:56,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:56,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:56,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722660807] [2020-07-20 11:20:56,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:56,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 11:20:56,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159630484] [2020-07-20 11:20:56,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 11:20:56,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:56,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 11:20:56,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:20:56,787 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 9 states. [2020-07-20 11:20:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:57,003 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-07-20 11:20:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 11:20:57,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-07-20 11:20:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:57,005 INFO L225 Difference]: With dead ends: 227 [2020-07-20 11:20:57,006 INFO L226 Difference]: Without dead ends: 206 [2020-07-20 11:20:57,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:20:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-07-20 11:20:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-07-20 11:20:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-20 11:20:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-07-20 11:20:57,037 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-07-20 11:20:57,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:57,038 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-07-20 11:20:57,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 11:20:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-07-20 11:20:57,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:20:57,042 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:57,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:57,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:57,256 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:57,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:57,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-07-20 11:20:57,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:57,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762221560] [2020-07-20 11:20:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:57,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:20:57,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:57,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:57,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762221560] [2020-07-20 11:20:57,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:57,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:57,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70255258] [2020-07-20 11:20:57,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:57,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:57,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:57,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:57,419 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 3 states. [2020-07-20 11:20:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:57,506 INFO L93 Difference]: Finished difference Result 222 states and 286 transitions. [2020-07-20 11:20:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:57,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-07-20 11:20:57,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:57,509 INFO L225 Difference]: With dead ends: 222 [2020-07-20 11:20:57,509 INFO L226 Difference]: Without dead ends: 217 [2020-07-20 11:20:57,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:57,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-20 11:20:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 208. [2020-07-20 11:20:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-20 11:20:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 270 transitions. [2020-07-20 11:20:57,524 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 270 transitions. Word has length 57 [2020-07-20 11:20:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:57,525 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 270 transitions. [2020-07-20 11:20:57,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 270 transitions. [2020-07-20 11:20:57,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:20:57,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:57,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:57,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:57,741 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:57,742 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-07-20 11:20:57,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:57,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271990367] [2020-07-20 11:20:57,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:57,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:20:57,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:57,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:57,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271990367] [2020-07-20 11:20:57,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:57,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:20:57,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376544992] [2020-07-20 11:20:57,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:20:57,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:57,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:20:57,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:20:57,941 INFO L87 Difference]: Start difference. First operand 208 states and 270 transitions. Second operand 6 states. [2020-07-20 11:20:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:58,029 INFO L93 Difference]: Finished difference Result 245 states and 315 transitions. [2020-07-20 11:20:58,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:20:58,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 11:20:58,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:58,032 INFO L225 Difference]: With dead ends: 245 [2020-07-20 11:20:58,032 INFO L226 Difference]: Without dead ends: 238 [2020-07-20 11:20:58,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:20:58,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-20 11:20:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 218. [2020-07-20 11:20:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-20 11:20:58,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2020-07-20 11:20:58,049 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 57 [2020-07-20 11:20:58,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:58,049 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2020-07-20 11:20:58,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:20:58,050 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2020-07-20 11:20:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-20 11:20:58,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:58,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:58,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:58,265 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:58,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-07-20 11:20:58,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:58,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731473792] [2020-07-20 11:20:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:58,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 11:20:58,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:58,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:58,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731473792] [2020-07-20 11:20:58,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:58,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:20:58,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419042858] [2020-07-20 11:20:58,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:20:58,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:20:58,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:58,452 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand 3 states. [2020-07-20 11:20:58,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:58,488 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-07-20 11:20:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:20:58,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-20 11:20:58,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:58,491 INFO L225 Difference]: With dead ends: 258 [2020-07-20 11:20:58,492 INFO L226 Difference]: Without dead ends: 217 [2020-07-20 11:20:58,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:20:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-20 11:20:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-07-20 11:20:58,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-07-20 11:20:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 278 transitions. [2020-07-20 11:20:58,528 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 278 transitions. Word has length 60 [2020-07-20 11:20:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:58,528 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 278 transitions. [2020-07-20 11:20:58,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:20:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 278 transitions. [2020-07-20 11:20:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 11:20:58,538 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:58,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:58,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:58,752 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:58,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:58,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-07-20 11:20:58,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:58,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180498978] [2020-07-20 11:20:58,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:58,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 11:20:58,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:58,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:58,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180498978] [2020-07-20 11:20:58,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:58,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 11:20:58,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195569640] [2020-07-20 11:20:58,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:20:58,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:58,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:20:58,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-20 11:20:58,961 INFO L87 Difference]: Start difference. First operand 217 states and 278 transitions. Second operand 10 states. [2020-07-20 11:20:59,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:59,208 INFO L93 Difference]: Finished difference Result 229 states and 290 transitions. [2020-07-20 11:20:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 11:20:59,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-07-20 11:20:59,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:59,211 INFO L225 Difference]: With dead ends: 229 [2020-07-20 11:20:59,211 INFO L226 Difference]: Without dead ends: 215 [2020-07-20 11:20:59,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:20:59,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-07-20 11:20:59,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-07-20 11:20:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-20 11:20:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 274 transitions. [2020-07-20 11:20:59,227 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 274 transitions. Word has length 56 [2020-07-20 11:20:59,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:59,228 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 274 transitions. [2020-07-20 11:20:59,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:20:59,228 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 274 transitions. [2020-07-20 11:20:59,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 11:20:59,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:59,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:59,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:59,444 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:59,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-07-20 11:20:59,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:59,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745678706] [2020-07-20 11:20:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:59,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 11:20:59,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:59,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:59,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745678706] [2020-07-20 11:20:59,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:59,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 11:20:59,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422178884] [2020-07-20 11:20:59,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:20:59,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:59,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:20:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:20:59,642 INFO L87 Difference]: Start difference. First operand 215 states and 274 transitions. Second operand 8 states. [2020-07-20 11:20:59,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:59,982 INFO L93 Difference]: Finished difference Result 367 states and 447 transitions. [2020-07-20 11:20:59,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:20:59,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-07-20 11:20:59,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:59,985 INFO L225 Difference]: With dead ends: 367 [2020-07-20 11:20:59,986 INFO L226 Difference]: Without dead ends: 293 [2020-07-20 11:20:59,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:20:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-07-20 11:21:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 245. [2020-07-20 11:21:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-20 11:21:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 311 transitions. [2020-07-20 11:21:00,003 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 311 transitions. Word has length 55 [2020-07-20 11:21:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:00,003 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 311 transitions. [2020-07-20 11:21:00,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:21:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 311 transitions. [2020-07-20 11:21:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 11:21:00,005 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:00,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:00,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:00,219 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-07-20 11:21:00,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:00,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067528926] [2020-07-20 11:21:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:00,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 11:21:00,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:21:00,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:00,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067528926] [2020-07-20 11:21:00,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:00,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 11:21:00,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496819114] [2020-07-20 11:21:00,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 11:21:00,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:00,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 11:21:00,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:21:00,407 INFO L87 Difference]: Start difference. First operand 245 states and 311 transitions. Second operand 9 states. [2020-07-20 11:21:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:00,612 INFO L93 Difference]: Finished difference Result 261 states and 327 transitions. [2020-07-20 11:21:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 11:21:00,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-07-20 11:21:00,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:00,615 INFO L225 Difference]: With dead ends: 261 [2020-07-20 11:21:00,615 INFO L226 Difference]: Without dead ends: 223 [2020-07-20 11:21:00,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:21:00,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-20 11:21:00,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-20 11:21:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-20 11:21:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-07-20 11:21:00,651 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 55 [2020-07-20 11:21:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:00,652 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-07-20 11:21:00,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 11:21:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-07-20 11:21:00,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-20 11:21:00,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:00,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:00,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:00,871 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:00,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:00,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1089521377, now seen corresponding path program 1 times [2020-07-20 11:21:00,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:00,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444180656] [2020-07-20 11:21:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:01,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:21:01,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:21:01,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:01,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444180656] [2020-07-20 11:21:01,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:01,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:21:01,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198868775] [2020-07-20 11:21:01,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:21:01,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:01,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:21:01,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:21:01,099 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 6 states. [2020-07-20 11:21:01,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:01,168 INFO L93 Difference]: Finished difference Result 307 states and 365 transitions. [2020-07-20 11:21:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:21:01,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-07-20 11:21:01,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:01,171 INFO L225 Difference]: With dead ends: 307 [2020-07-20 11:21:01,171 INFO L226 Difference]: Without dead ends: 216 [2020-07-20 11:21:01,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:21:01,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-07-20 11:21:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 204. [2020-07-20 11:21:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-20 11:21:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 242 transitions. [2020-07-20 11:21:01,190 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 242 transitions. Word has length 58 [2020-07-20 11:21:01,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:01,190 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 242 transitions. [2020-07-20 11:21:01,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:21:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 242 transitions. [2020-07-20 11:21:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-20 11:21:01,192 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:01,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:01,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:01,406 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-07-20 11:21:01,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:01,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765160917] [2020-07-20 11:21:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:21:01,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 11:21:01,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:21:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:21:01,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:21:01,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765160917] [2020-07-20 11:21:01,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:21:01,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:21:01,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587736113] [2020-07-20 11:21:01,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:21:01,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:21:01,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:21:01,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:21:01,580 INFO L87 Difference]: Start difference. First operand 204 states and 242 transitions. Second operand 5 states. [2020-07-20 11:21:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:21:01,601 INFO L93 Difference]: Finished difference Result 249 states and 292 transitions. [2020-07-20 11:21:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:21:01,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-07-20 11:21:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:21:01,603 INFO L225 Difference]: With dead ends: 249 [2020-07-20 11:21:01,604 INFO L226 Difference]: Without dead ends: 199 [2020-07-20 11:21:01,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:21:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-07-20 11:21:01,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-07-20 11:21:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-07-20 11:21:01,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 234 transitions. [2020-07-20 11:21:01,618 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 234 transitions. Word has length 58 [2020-07-20 11:21:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:21:01,619 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 234 transitions. [2020-07-20 11:21:01,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:21:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 234 transitions. [2020-07-20 11:21:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 11:21:01,620 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:21:01,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:21:01,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:01,838 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:21:01,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:21:01,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-07-20 11:21:01,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:21:01,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899833111] [2020-07-20 11:21:01,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:21:01,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:21:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:21:02,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:21:02,172 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:21:02,172 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:21:02,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:21:02,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:21:02 BoogieIcfgContainer [2020-07-20 11:21:02,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:21:02,539 INFO L168 Benchmark]: Toolchain (without parser) took 14581.93 ms. Allocated memory was 139.5 MB in the beginning and 346.6 MB in the end (delta: 207.1 MB). Free memory was 103.9 MB in the beginning and 154.9 MB in the end (delta: -51.0 MB). Peak memory consumption was 156.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:02,540 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 11:21:02,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.61 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 175.0 MB in the end (delta: -71.6 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:02,541 INFO L168 Benchmark]: Boogie Preprocessor took 77.87 ms. Allocated memory is still 202.4 MB. Free memory was 175.0 MB in the beginning and 171.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:02,542 INFO L168 Benchmark]: RCFGBuilder took 1306.25 ms. Allocated memory is still 202.4 MB. Free memory was 171.5 MB in the beginning and 100.6 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:02,543 INFO L168 Benchmark]: TraceAbstraction took 12557.29 ms. Allocated memory was 202.4 MB in the beginning and 346.6 MB in the end (delta: 144.2 MB). Free memory was 99.9 MB in the beginning and 154.9 MB in the end (delta: -55.0 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:21:02,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.61 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 103.5 MB in the beginning and 175.0 MB in the end (delta: -71.6 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.87 ms. Allocated memory is still 202.4 MB. Free memory was 175.0 MB in the beginning and 171.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1306.25 ms. Allocated memory is still 202.4 MB. Free memory was 171.5 MB in the beginning and 100.6 MB in the end (delta: 71.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12557.29 ms. Allocated memory was 202.4 MB in the beginning and 346.6 MB in the end (delta: 144.2 MB). Free memory was 99.9 MB in the beginning and 154.9 MB in the end (delta: -55.0 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; VAL [\old(compFptr)=21, \old(compRegistered)=16, \old(customIrp)=11, \old(DC)=19, \old(DevicePowerState)=15, \old(Executive)=9, \old(IPC)=13, \old(KernelMode)=17, \old(lowerDriverReturn)=26, \old(MPR1)=10, \old(MPR3)=22, \old(myStatus)=14, \old(NP)=8, \old(pended)=12, \old(s)=18, \old(setEventCalled)=25, \old(SKIP1)=24, \old(SKIP2)=20, \old(UNLOADED)=27, compFptr=0, compRegistered=0, customIrp=0, DC=0, DevicePowerState=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, UNLOADED=0] [L292] int status ; [L293] int irp = __VERIFIER_nondet_int() ; [L294] int pirp ; [L295] int pirp__IoStatus__Status ; [L296] int irp_choice = __VERIFIER_nondet_int() ; [L297] int devobj = __VERIFIER_nondet_int() ; [L298] int __cil_tmp8 ; [L300] KernelMode = 0 [L301] Executive = 0 [L302] DevicePowerState = 1 [L303] s = 0 [L304] UNLOADED = 0 [L305] NP = 0 [L306] DC = 0 [L307] SKIP1 = 0 [L308] SKIP2 = 0 [L309] MPR1 = 0 [L310] MPR3 = 0 [L311] IPC = 0 [L312] pended = 0 [L313] compFptr = 0 [L314] compRegistered = 0 [L315] lowerDriverReturn = 0 [L316] setEventCalled = 0 [L317] customIrp = 0 [L318] myStatus = 0 [L322] status = 0 [L323] pirp = irp VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DevicePowerState=1, devobj=0, Executive=0, IPC=0, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, status=0, UNLOADED=0] [L324] CALL _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=0, DevicePowerState=1, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, UNLOADED=0] [L59] UNLOADED = 0 [L60] NP = 1 [L61] DC = 2 [L62] SKIP1 = 3 [L63] SKIP2 = 4 [L64] MPR1 = 5 [L65] MPR3 = 6 [L66] IPC = 7 [L67] s = UNLOADED [L68] pended = 0 [L69] compFptr = 0 [L70] compRegistered = 0 [L71] lowerDriverReturn = 0 [L72] setEventCalled = 0 [L73] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L324] RET _BLAST_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L326] COND TRUE status >= 0 [L327] s = NP [L328] customIrp = 0 [L329] setEventCalled = customIrp [L330] lowerDriverReturn = setEventCalled [L331] compRegistered = lowerDriverReturn [L332] pended = compRegistered [L333] pirp__IoStatus__Status = 0 [L334] myStatus = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L335] COND FALSE !(irp_choice == 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L340] CALL stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L340] RET stub_driver_init() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L343] COND FALSE !(status < 0) [L347] int tmp_ndt_1; [L348] tmp_ndt_1 = __VERIFIER_nondet_int() [L349] COND FALSE !(tmp_ndt_1 == 0) [L352] int tmp_ndt_2; [L353] tmp_ndt_2 = __VERIFIER_nondet_int() [L354] COND FALSE !(tmp_ndt_2 == 1) [L357] int tmp_ndt_3; [L358] tmp_ndt_3 = __VERIFIER_nondet_int() [L359] COND TRUE tmp_ndt_3 == 3 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L78] int devExt ; [L79] int irpStack ; [L80] int status ; [L81] int event = __VERIFIER_nondet_int() ; [L82] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L83] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L84] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L85] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L86] int devExt__Started ; [L87] int devExt__Removed ; [L88] int devExt__SurpriseRemoved ; [L89] int Irp__IoStatus__Status ; [L90] int Irp__IoStatus__Information ; [L91] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L92] int irpSp ; [L93] int nextIrpSp ; [L94] int nextIrpSp__Control ; [L95] int irpSp___0 ; [L96] int irpSp__Context ; [L97] int irpSp__Control ; [L98] long __cil_tmp23 ; [L101] status = 0 [L102] devExt = DeviceObject__DeviceExtension [L103] irpStack = Irp__Tail__Overlay__CurrentStackLocation VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L104] COND FALSE !(irpStack__MinorFunction == 0) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L107] COND FALSE !(irpStack__MinorFunction == 23) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L110] COND TRUE irpStack__MinorFunction == 2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L234] devExt__Removed = 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L235] COND TRUE s == NP [L236] s = SKIP1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L487] COND FALSE !(\read(compRegistered)) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L500] int tmp_ndt_6; [L501] tmp_ndt_6 = __VERIFIER_nondet_int() [L502] COND FALSE !(tmp_ndt_6 == 0) [L505] int tmp_ndt_7; [L506] tmp_ndt_7 = __VERIFIER_nondet_int() [L507] COND TRUE tmp_ndt_7 == 1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L516] returnVal2 = -1073741823 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L526] COND FALSE !(s == NP) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L530] COND FALSE !(s == MPR1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L549] return (returnVal2); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=3, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, \result=-1073741823, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DevicePowerState=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lcontext=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, returnVal2=-1073741823, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=1, tmp_ndt_7=1, UNLOADED=0] [L245] RET IofCallDriver(devExt__TopOfStack, Irp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IofCallDriver(devExt__TopOfStack, Irp)=-1073741823, IPC=7, Irp=0, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L246] status = 0 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L288] return (status); VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DeviceObject)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(Irp)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, \result=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=0, devExt__Removed=1, devExt__TopOfStack=0, DeviceObject=0, DeviceObject__DeviceExtension=0, DevicePowerState=1, event=0, Executive=0, IPC=7, Irp=0, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L386] RET, EXPR KbFilter_PnP(devobj, pirp) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KbFilter_PnP(devobj, pirp)=0, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L418] COND FALSE !(pended == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L426] COND TRUE s != UNLOADED VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L427] COND TRUE status != -1 VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L428] COND FALSE !(s != SKIP2) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L438] COND FALSE !(pended == 1) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L445] COND FALSE !(s == DC) VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L450] COND TRUE status != lowerDriverReturn VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=-1, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=0, pirp__IoStatus__Status=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=1, tmp_ndt_2=2, tmp_ndt_3=3, UNLOADED=0] [L451] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L1011] __VERIFIER_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.2s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5032 SDtfs, 1576 SDslu, 11397 SDs, 0 SdLazy, 1439 SolverSat, 171 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 914 GetRequests, 838 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 19 MinimizatonAttempts, 180 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 974 NumberOfCodeBlocks, 974 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 899 ConstructedInterpolants, 0 QuantifiedInterpolants, 76743 SizeOfPredicates, 25 NumberOfNonLiveVariables, 10928 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...