/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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 13:49:02,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:49:02,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:49:02,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:49:02,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:49:02,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:49:02,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:49:02,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:49:02,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:49:02,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:49:02,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:49:02,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:49:02,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:49:02,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:49:02,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:49:02,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:49:02,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:49:02,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:49:02,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:49:02,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:49:02,308 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:49:02,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:49:02,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:49:02,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:49:02,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:49:02,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:49:02,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:49:02,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:49:02,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:49:02,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:49:02,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:49:02,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:49:02,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:49:02,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:49:02,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:49:02,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:49:02,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:49:02,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:49:02,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:49:02,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:49:02,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:49:02,337 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 13:49:02,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:49:02,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:49:02,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:49:02,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:49:02,368 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:49:02,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:49:02,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:49:02,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:49:02,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:49:02,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:49:02,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:49:02,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:49:02,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:49:02,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:49:02,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:49:02,371 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:49:02,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:49:02,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:49:02,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:49:02,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:49:02,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:49:02,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:49:02,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:49:02,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:49:02,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:49:02,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:49:02,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:02,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:49:02,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:49:02,375 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:49:02,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:49:02,761 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:49:02,765 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:49:02,767 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:49:02,768 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:49:02,768 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-20 13:49:02,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b45d6de69/5e40979f4e3e44b3bc0ddd1a27ee0a47/FLAG8cf1e6844 [2020-07-20 13:49:03,457 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:49:03,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-20 13:49:03,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b45d6de69/5e40979f4e3e44b3bc0ddd1a27ee0a47/FLAG8cf1e6844 [2020-07-20 13:49:03,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b45d6de69/5e40979f4e3e44b3bc0ddd1a27ee0a47 [2020-07-20 13:49:03,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:49:03,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:49:03,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:49:03,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:49:03,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:49:03,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:49:03" (1/1) ... [2020-07-20 13:49:03,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18105407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:03, skipping insertion in model container [2020-07-20 13:49:03,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:49:03" (1/1) ... [2020-07-20 13:49:03,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:49:03,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:49:04,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:49:04,179 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:49:04,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:49:04,414 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:49:04,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04 WrapperNode [2020-07-20 13:49:04,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:49:04,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:49:04,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:49:04,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:49:04,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 13:49:04,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 13:49:04,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 13:49:04,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 13:49:04,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 13:49:04,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 13:49:04,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (1/1) ... [2020-07-20 13:49:04,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:49:04,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:49:04,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:49:04,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:49:04,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (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 13:49:04,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:49:04,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:49:04,558 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-07-20 13:49:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-07-20 13:49:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-07-20 13:49:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:49:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-07-20 13:49:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-07-20 13:49:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-07-20 13:49:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-07-20 13:49:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-07-20 13:49:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-07-20 13:49:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-07-20 13:49:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-07-20 13:49:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-07-20 13:49:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-07-20 13:49:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-07-20 13:49:04,561 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-07-20 13:49:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:49:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 13:49:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:49:04,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-20 13:49:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-07-20 13:49:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-07-20 13:49:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-07-20 13:49:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-07-20 13:49:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-07-20 13:49:04,563 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-07-20 13:49:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-07-20 13:49:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-07-20 13:49:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-07-20 13:49:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-07-20 13:49:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-07-20 13:49:04,564 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-07-20 13:49:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-07-20 13:49:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-07-20 13:49:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:49:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-07-20 13:49:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:49:04,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:49:04,898 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 13:49:04,978 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-20 13:49:04,978 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-20 13:49:05,005 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 13:49:05,217 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-07-20 13:49:05,218 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-07-20 13:49:05,223 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 13:49:05,301 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-20 13:49:05,301 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-20 13:49:05,307 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 13:49:05,353 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-20 13:49:05,354 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-20 13:49:05,460 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 13:49:05,479 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-07-20 13:49:05,480 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-07-20 13:49:05,505 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 13:49:05,619 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-07-20 13:49:05,620 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-07-20 13:49:05,640 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:49:05,641 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 13:49:05,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:49:05 BoogieIcfgContainer [2020-07-20 13:49:05,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:49:05,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:49:05,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:49:05,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:49:05,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:49:03" (1/3) ... [2020-07-20 13:49:05,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fff7342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:49:05, skipping insertion in model container [2020-07-20 13:49:05,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:49:04" (2/3) ... [2020-07-20 13:49:05,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fff7342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:49:05, skipping insertion in model container [2020-07-20 13:49:05,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:49:05" (3/3) ... [2020-07-20 13:49:05,660 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-07-20 13:49:05,674 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:49:05,684 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:49:05,702 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:49:05,735 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:49:05,735 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:49:05,735 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:49:05,736 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:49:05,736 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:49:05,736 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:49:05,736 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:49:05,736 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:49:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-07-20 13:49:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 13:49:05,787 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:05,789 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 13:49:05,790 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:05,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:05,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-07-20 13:49:05,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:05,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636868940] [2020-07-20 13:49:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:05,990 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 13:49:05,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:05,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 13:49:06,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:06,060 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 13:49:06,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:06,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636868940] [2020-07-20 13:49:06,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:06,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:49:06,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056692446] [2020-07-20 13:49:06,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:49:06,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:06,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:49:06,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:49:06,090 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 3 states. [2020-07-20 13:49:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:06,213 INFO L93 Difference]: Finished difference Result 390 states and 586 transitions. [2020-07-20 13:49:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:49:06,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 13:49:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:06,236 INFO L225 Difference]: With dead ends: 390 [2020-07-20 13:49:06,237 INFO L226 Difference]: Without dead ends: 231 [2020-07-20 13:49:06,246 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 13:49:06,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-07-20 13:49:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-07-20 13:49:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-20 13:49:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-07-20 13:49:06,361 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-07-20 13:49:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:06,366 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-07-20 13:49:06,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:49:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-07-20 13:49:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 13:49:06,370 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:06,370 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 13:49:06,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:06,585 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:06,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-07-20 13:49:06,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:06,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008417968] [2020-07-20 13:49:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:06,712 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:49:06,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:06,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:49:06,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:06,741 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 13:49:06,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:06,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008417968] [2020-07-20 13:49:06,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:06,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:49:06,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349876418] [2020-07-20 13:49:06,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:49:06,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:06,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:49:06,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:49:06,746 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 3 states. [2020-07-20 13:49:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:06,964 INFO L93 Difference]: Finished difference Result 375 states and 514 transitions. [2020-07-20 13:49:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:49:06,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 13:49:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:06,971 INFO L225 Difference]: With dead ends: 375 [2020-07-20 13:49:06,971 INFO L226 Difference]: Without dead ends: 314 [2020-07-20 13:49:06,974 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 13:49:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-20 13:49:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 298. [2020-07-20 13:49:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-07-20 13:49:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 408 transitions. [2020-07-20 13:49:07,015 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 408 transitions. Word has length 28 [2020-07-20 13:49:07,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:07,016 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 408 transitions. [2020-07-20 13:49:07,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:49:07,016 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 408 transitions. [2020-07-20 13:49:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 13:49:07,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:07,018 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 13:49:07,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:07,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:07,235 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-07-20 13:49:07,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:07,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464049472] [2020-07-20 13:49:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:07,378 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:49:07,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:07,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:49:07,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:07,408 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 13:49:07,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:07,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464049472] [2020-07-20 13:49:07,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:07,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:49:07,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664761063] [2020-07-20 13:49:07,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:49:07,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:07,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:49:07,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:49:07,412 INFO L87 Difference]: Start difference. First operand 298 states and 408 transitions. Second operand 3 states. [2020-07-20 13:49:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:07,480 INFO L93 Difference]: Finished difference Result 481 states and 640 transitions. [2020-07-20 13:49:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:49:07,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 13:49:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:07,522 INFO L225 Difference]: With dead ends: 481 [2020-07-20 13:49:07,522 INFO L226 Difference]: Without dead ends: 362 [2020-07-20 13:49:07,524 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 13:49:07,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-07-20 13:49:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 338. [2020-07-20 13:49:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-20 13:49:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 459 transitions. [2020-07-20 13:49:07,585 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 459 transitions. Word has length 28 [2020-07-20 13:49:07,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:07,586 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 459 transitions. [2020-07-20 13:49:07,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:49:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 459 transitions. [2020-07-20 13:49:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 13:49:07,594 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:07,595 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 13:49:07,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:07,812 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:07,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:07,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-07-20 13:49:07,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:07,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730185063] [2020-07-20 13:49:07,815 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:07,960 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:49:07,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:07,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:49:07,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:07,986 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 13:49:07,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:07,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730185063] [2020-07-20 13:49:07,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:07,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:49:07,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549674084] [2020-07-20 13:49:07,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:49:07,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:49:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:49:07,989 INFO L87 Difference]: Start difference. First operand 338 states and 459 transitions. Second operand 3 states. [2020-07-20 13:49:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:08,106 INFO L93 Difference]: Finished difference Result 341 states and 461 transitions. [2020-07-20 13:49:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:49:08,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-20 13:49:08,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:08,111 INFO L225 Difference]: With dead ends: 341 [2020-07-20 13:49:08,111 INFO L226 Difference]: Without dead ends: 337 [2020-07-20 13:49:08,112 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 13:49:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-20 13:49:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-20 13:49:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-20 13:49:08,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 456 transitions. [2020-07-20 13:49:08,136 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 456 transitions. Word has length 38 [2020-07-20 13:49:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:08,137 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 456 transitions. [2020-07-20 13:49:08,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:49:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 456 transitions. [2020-07-20 13:49:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:49:08,140 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:08,140 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 13:49:08,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:08,354 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:08,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-07-20 13:49:08,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:08,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025004192] [2020-07-20 13:49:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:08,525 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:08,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:08,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 13:49:08,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:08,594 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 13:49:08,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:08,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025004192] [2020-07-20 13:49:08,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:08,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:49:08,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377101801] [2020-07-20 13:49:08,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:49:08,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:08,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:49:08,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:49:08,609 INFO L87 Difference]: Start difference. First operand 337 states and 456 transitions. Second operand 5 states. [2020-07-20 13:49:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:09,027 INFO L93 Difference]: Finished difference Result 491 states and 654 transitions. [2020-07-20 13:49:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:49:09,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-07-20 13:49:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:09,035 INFO L225 Difference]: With dead ends: 491 [2020-07-20 13:49:09,035 INFO L226 Difference]: Without dead ends: 406 [2020-07-20 13:49:09,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:49:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-07-20 13:49:09,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 355. [2020-07-20 13:49:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-07-20 13:49:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 478 transitions. [2020-07-20 13:49:09,073 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 478 transitions. Word has length 46 [2020-07-20 13:49:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:09,074 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 478 transitions. [2020-07-20 13:49:09,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:49:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 478 transitions. [2020-07-20 13:49:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:49:09,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:09,077 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 13:49:09,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:09,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:09,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:09,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1876426227, now seen corresponding path program 1 times [2020-07-20 13:49:09,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:09,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206679635] [2020-07-20 13:49:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:09,439 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:09,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:09,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 13:49:09,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:09,457 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 13:49:09,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:09,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206679635] [2020-07-20 13:49:09,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:09,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:49:09,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134363846] [2020-07-20 13:49:09,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:49:09,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:09,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:49:09,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:49:09,460 INFO L87 Difference]: Start difference. First operand 355 states and 478 transitions. Second operand 3 states. [2020-07-20 13:49:09,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:09,498 INFO L93 Difference]: Finished difference Result 405 states and 534 transitions. [2020-07-20 13:49:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:49:09,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 13:49:09,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:09,503 INFO L225 Difference]: With dead ends: 405 [2020-07-20 13:49:09,503 INFO L226 Difference]: Without dead ends: 338 [2020-07-20 13:49:09,504 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 13:49:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-07-20 13:49:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 314. [2020-07-20 13:49:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-07-20 13:49:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 419 transitions. [2020-07-20 13:49:09,528 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 419 transitions. Word has length 46 [2020-07-20 13:49:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:09,528 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 419 transitions. [2020-07-20 13:49:09,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:49:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 419 transitions. [2020-07-20 13:49:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 13:49:09,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:09,531 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 13:49:09,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:09,745 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:09,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:09,746 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-07-20 13:49:09,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:09,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150289754] [2020-07-20 13:49:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:09,888 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:09,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:09,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:49:09,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:09,912 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 13:49:09,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:09,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150289754] [2020-07-20 13:49:09,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:09,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:49:09,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883098556] [2020-07-20 13:49:09,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:49:09,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:09,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:49:09,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:49:09,916 INFO L87 Difference]: Start difference. First operand 314 states and 419 transitions. Second operand 3 states. [2020-07-20 13:49:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:09,957 INFO L93 Difference]: Finished difference Result 326 states and 434 transitions. [2020-07-20 13:49:09,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:49:09,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-07-20 13:49:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:09,961 INFO L225 Difference]: With dead ends: 326 [2020-07-20 13:49:09,961 INFO L226 Difference]: Without dead ends: 310 [2020-07-20 13:49:09,962 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 13:49:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-07-20 13:49:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 280. [2020-07-20 13:49:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-07-20 13:49:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 377 transitions. [2020-07-20 13:49:09,985 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 377 transitions. Word has length 45 [2020-07-20 13:49:09,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:09,985 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 377 transitions. [2020-07-20 13:49:09,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:49:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 377 transitions. [2020-07-20 13:49:09,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:49:09,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:09,987 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 13:49:10,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:10,203 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:10,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:10,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-07-20 13:49:10,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:10,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822234097] [2020-07-20 13:49:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:10,358 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:49:10,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:10,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:49:10,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:10,402 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 13:49:10,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:10,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822234097] [2020-07-20 13:49:10,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:10,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:49:10,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490445836] [2020-07-20 13:49:10,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:49:10,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:10,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:49:10,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:49:10,406 INFO L87 Difference]: Start difference. First operand 280 states and 377 transitions. Second operand 3 states. [2020-07-20 13:49:10,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:10,498 INFO L93 Difference]: Finished difference Result 300 states and 398 transitions. [2020-07-20 13:49:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:49:10,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 13:49:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:10,501 INFO L225 Difference]: With dead ends: 300 [2020-07-20 13:49:10,502 INFO L226 Difference]: Without dead ends: 258 [2020-07-20 13:49:10,503 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 13:49:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-20 13:49:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-07-20 13:49:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-20 13:49:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 339 transitions. [2020-07-20 13:49:10,522 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 339 transitions. Word has length 46 [2020-07-20 13:49:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:10,522 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 339 transitions. [2020-07-20 13:49:10,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:49:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 339 transitions. [2020-07-20 13:49:10,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 13:49:10,524 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:10,524 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 13:49:10,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:10,732 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:10,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-07-20 13:49:10,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:10,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732887349] [2020-07-20 13:49:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:10,833 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:49:10,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:10,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 13:49:10,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:10,858 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 13:49:10,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:10,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732887349] [2020-07-20 13:49:10,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:10,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:49:10,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246980244] [2020-07-20 13:49:10,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:49:10,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:10,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:49:10,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:49:10,862 INFO L87 Difference]: Start difference. First operand 258 states and 339 transitions. Second operand 3 states. [2020-07-20 13:49:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:10,937 INFO L93 Difference]: Finished difference Result 286 states and 372 transitions. [2020-07-20 13:49:10,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:49:10,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-20 13:49:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:10,941 INFO L225 Difference]: With dead ends: 286 [2020-07-20 13:49:10,941 INFO L226 Difference]: Without dead ends: 256 [2020-07-20 13:49:10,942 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 13:49:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-20 13:49:10,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-20 13:49:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 13:49:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 335 transitions. [2020-07-20 13:49:10,962 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 335 transitions. Word has length 53 [2020-07-20 13:49:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:10,962 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 335 transitions. [2020-07-20 13:49:10,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:49:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 335 transitions. [2020-07-20 13:49:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 13:49:10,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:10,965 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 13:49:11,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:11,179 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:11,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:11,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-07-20 13:49:11,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:11,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828976532] [2020-07-20 13:49:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:11,303 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:49:11,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:11,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 13:49:11,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:11,393 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 13:49:11,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:11,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828976532] [2020-07-20 13:49:11,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:11,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:49:11,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841429876] [2020-07-20 13:49:11,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:49:11,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:11,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:49:11,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:49:11,397 INFO L87 Difference]: Start difference. First operand 256 states and 335 transitions. Second operand 6 states. [2020-07-20 13:49:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:11,796 INFO L93 Difference]: Finished difference Result 297 states and 381 transitions. [2020-07-20 13:49:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 13:49:11,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-20 13:49:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:11,799 INFO L225 Difference]: With dead ends: 297 [2020-07-20 13:49:11,799 INFO L226 Difference]: Without dead ends: 256 [2020-07-20 13:49:11,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 13:49:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-20 13:49:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-20 13:49:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 13:49:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 333 transitions. [2020-07-20 13:49:11,819 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 333 transitions. Word has length 51 [2020-07-20 13:49:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:11,819 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 333 transitions. [2020-07-20 13:49:11,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:49:11,819 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 333 transitions. [2020-07-20 13:49:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 13:49:11,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:11,821 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 13:49:12,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:12,035 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:12,036 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-07-20 13:49:12,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:12,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59921200] [2020-07-20 13:49:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:12,159 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:12,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:12,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 13:49:12,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:12,209 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 13:49:12,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:12,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59921200] [2020-07-20 13:49:12,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:12,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 13:49:12,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347590808] [2020-07-20 13:49:12,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 13:49:12,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:12,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 13:49:12,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-20 13:49:12,213 INFO L87 Difference]: Start difference. First operand 256 states and 333 transitions. Second operand 8 states. [2020-07-20 13:49:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:12,334 INFO L93 Difference]: Finished difference Result 268 states and 345 transitions. [2020-07-20 13:49:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 13:49:12,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-20 13:49:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:12,339 INFO L225 Difference]: With dead ends: 268 [2020-07-20 13:49:12,339 INFO L226 Difference]: Without dead ends: 227 [2020-07-20 13:49:12,340 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 13:49:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-20 13:49:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-07-20 13:49:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-20 13:49:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 294 transitions. [2020-07-20 13:49:12,356 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 294 transitions. Word has length 53 [2020-07-20 13:49:12,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:12,356 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 294 transitions. [2020-07-20 13:49:12,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 13:49:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 294 transitions. [2020-07-20 13:49:12,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 13:49:12,358 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:12,358 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 13:49:12,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:12,572 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-07-20 13:49:12,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:12,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486085463] [2020-07-20 13:49:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:12,704 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:12,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:12,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 13:49:12,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:12,769 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 13:49:12,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:12,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486085463] [2020-07-20 13:49:12,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:12,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 13:49:12,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003744087] [2020-07-20 13:49:12,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 13:49:12,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:12,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 13:49:12,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 13:49:12,773 INFO L87 Difference]: Start difference. First operand 227 states and 294 transitions. Second operand 9 states. [2020-07-20 13:49:12,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:12,980 INFO L93 Difference]: Finished difference Result 243 states and 310 transitions. [2020-07-20 13:49:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 13:49:12,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-07-20 13:49:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:12,983 INFO L225 Difference]: With dead ends: 243 [2020-07-20 13:49:12,983 INFO L226 Difference]: Without dead ends: 222 [2020-07-20 13:49:12,984 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 13:49:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-07-20 13:49:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-07-20 13:49:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-07-20 13:49:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 287 transitions. [2020-07-20 13:49:13,004 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 287 transitions. Word has length 54 [2020-07-20 13:49:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:13,007 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 287 transitions. [2020-07-20 13:49:13,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 13:49:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 287 transitions. [2020-07-20 13:49:13,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 13:49:13,009 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:13,009 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 13:49:13,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:13,222 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:13,223 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-07-20 13:49:13,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:13,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066828762] [2020-07-20 13:49:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:13,358 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:13,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:13,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:49:13,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:13,395 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 13:49:13,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:13,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066828762] [2020-07-20 13:49:13,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:13,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:49:13,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697571246] [2020-07-20 13:49:13,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:49:13,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:13,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:49:13,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:49:13,401 INFO L87 Difference]: Start difference. First operand 222 states and 287 transitions. Second operand 6 states. [2020-07-20 13:49:13,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:13,481 INFO L93 Difference]: Finished difference Result 259 states and 332 transitions. [2020-07-20 13:49:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:49:13,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 13:49:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:13,483 INFO L225 Difference]: With dead ends: 259 [2020-07-20 13:49:13,484 INFO L226 Difference]: Without dead ends: 252 [2020-07-20 13:49:13,485 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 13:49:13,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-07-20 13:49:13,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2020-07-20 13:49:13,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-20 13:49:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 300 transitions. [2020-07-20 13:49:13,503 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 300 transitions. Word has length 57 [2020-07-20 13:49:13,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:13,503 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 300 transitions. [2020-07-20 13:49:13,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:49:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 300 transitions. [2020-07-20 13:49:13,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 13:49:13,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:13,508 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 13:49:13,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:13,724 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:13,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:13,725 INFO L82 PathProgramCache]: Analyzing trace with hash -833535160, now seen corresponding path program 1 times [2020-07-20 13:49:13,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:13,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835629465] [2020-07-20 13:49:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:13,863 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:13,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:13,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 13:49:13,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:13,932 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 13:49:13,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:13,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835629465] [2020-07-20 13:49:13,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:13,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 13:49:13,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330928614] [2020-07-20 13:49:13,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 13:49:13,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:13,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 13:49:13,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-20 13:49:13,935 INFO L87 Difference]: Start difference. First operand 232 states and 300 transitions. Second operand 10 states. [2020-07-20 13:49:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:14,121 INFO L93 Difference]: Finished difference Result 244 states and 312 transitions. [2020-07-20 13:49:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 13:49:14,121 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-07-20 13:49:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:14,124 INFO L225 Difference]: With dead ends: 244 [2020-07-20 13:49:14,124 INFO L226 Difference]: Without dead ends: 230 [2020-07-20 13:49:14,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 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 13:49:14,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-07-20 13:49:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-07-20 13:49:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-20 13:49:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 296 transitions. [2020-07-20 13:49:14,143 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 296 transitions. Word has length 57 [2020-07-20 13:49:14,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:14,143 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 296 transitions. [2020-07-20 13:49:14,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 13:49:14,143 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 296 transitions. [2020-07-20 13:49:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 13:49:14,145 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:14,145 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 13:49:14,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:14,356 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:14,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:14,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-07-20 13:49:14,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:14,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277515967] [2020-07-20 13:49:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:14,497 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:14,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:14,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 13:49:14,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:14,577 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 13:49:14,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:14,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277515967] [2020-07-20 13:49:14,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:14,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 13:49:14,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316348287] [2020-07-20 13:49:14,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 13:49:14,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:14,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 13:49:14,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-20 13:49:14,602 INFO L87 Difference]: Start difference. First operand 230 states and 296 transitions. Second operand 10 states. [2020-07-20 13:49:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:14,785 INFO L93 Difference]: Finished difference Result 242 states and 308 transitions. [2020-07-20 13:49:14,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 13:49:14,785 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-07-20 13:49:14,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:14,788 INFO L225 Difference]: With dead ends: 242 [2020-07-20 13:49:14,788 INFO L226 Difference]: Without dead ends: 218 [2020-07-20 13:49:14,792 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 13:49:14,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-07-20 13:49:14,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-07-20 13:49:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-20 13:49:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 279 transitions. [2020-07-20 13:49:14,810 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 279 transitions. Word has length 56 [2020-07-20 13:49:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:14,810 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 279 transitions. [2020-07-20 13:49:14,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 13:49:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 279 transitions. [2020-07-20 13:49:14,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 13:49:14,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:14,813 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 13:49:15,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:15,029 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:15,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:15,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-07-20 13:49:15,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:15,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634972487] [2020-07-20 13:49:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:15,185 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:15,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:15,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 13:49:15,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:15,250 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 13:49:15,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:15,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634972487] [2020-07-20 13:49:15,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:15,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 13:49:15,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972776288] [2020-07-20 13:49:15,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 13:49:15,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:15,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 13:49:15,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 13:49:15,254 INFO L87 Difference]: Start difference. First operand 218 states and 279 transitions. Second operand 8 states. [2020-07-20 13:49:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:15,552 INFO L93 Difference]: Finished difference Result 357 states and 436 transitions. [2020-07-20 13:49:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 13:49:15,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-07-20 13:49:15,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:15,557 INFO L225 Difference]: With dead ends: 357 [2020-07-20 13:49:15,557 INFO L226 Difference]: Without dead ends: 289 [2020-07-20 13:49:15,558 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 13:49:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-07-20 13:49:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 245. [2020-07-20 13:49:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-20 13:49:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 311 transitions. [2020-07-20 13:49:15,575 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 311 transitions. Word has length 55 [2020-07-20 13:49:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:15,575 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 311 transitions. [2020-07-20 13:49:15,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 13:49:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 311 transitions. [2020-07-20 13:49:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 13:49:15,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:15,577 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 13:49:15,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:15,791 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:15,792 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-07-20 13:49:15,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:15,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788509996] [2020-07-20 13:49:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:15,919 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:15,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:15,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 13:49:15,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:15,979 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 13:49:15,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:15,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788509996] [2020-07-20 13:49:15,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:15,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 13:49:15,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747399418] [2020-07-20 13:49:15,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 13:49:15,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 13:49:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 13:49:15,982 INFO L87 Difference]: Start difference. First operand 245 states and 311 transitions. Second operand 9 states. [2020-07-20 13:49:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:16,149 INFO L93 Difference]: Finished difference Result 261 states and 327 transitions. [2020-07-20 13:49:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 13:49:16,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-07-20 13:49:16,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:16,152 INFO L225 Difference]: With dead ends: 261 [2020-07-20 13:49:16,152 INFO L226 Difference]: Without dead ends: 223 [2020-07-20 13:49:16,153 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 13:49:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-20 13:49:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-20 13:49:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-20 13:49:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-07-20 13:49:16,190 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 55 [2020-07-20 13:49:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:16,191 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-07-20 13:49:16,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 13:49:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-07-20 13:49:16,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-20 13:49:16,192 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:16,193 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 13:49:16,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:16,408 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:16,409 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-07-20 13:49:16,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:16,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678907968] [2020-07-20 13:49:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:16,585 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:16,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:49:16,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 13:49:16,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:49:16,615 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 13:49:16,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:49:16,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678907968] [2020-07-20 13:49:16,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:49:16,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:49:16,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054692976] [2020-07-20 13:49:16,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:49:16,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:49:16,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:49:16,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:49:16,623 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 5 states. [2020-07-20 13:49:16,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:49:16,647 INFO L93 Difference]: Finished difference Result 273 states and 325 transitions. [2020-07-20 13:49:16,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:49:16,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-07-20 13:49:16,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:49:16,650 INFO L225 Difference]: With dead ends: 273 [2020-07-20 13:49:16,650 INFO L226 Difference]: Without dead ends: 214 [2020-07-20 13:49:16,652 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 13:49:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-20 13:49:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-07-20 13:49:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-07-20 13:49:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2020-07-20 13:49:16,668 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 58 [2020-07-20 13:49:16,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:49:16,669 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2020-07-20 13:49:16,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:49:16,669 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2020-07-20 13:49:16,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 13:49:16,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:49:16,670 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 13:49:16,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:16,886 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:49:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:49:16,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-07-20 13:49:16,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:49:16,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050636045] [2020-07-20 13:49:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 13:49:17,018 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:49:17,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:49:17,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:49:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:49:17,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:49:17,151 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:49:17,151 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:49:17,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:49:17,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:49:17 BoogieIcfgContainer [2020-07-20 13:49:17,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:49:17,520 INFO L168 Benchmark]: Toolchain (without parser) took 13746.61 ms. Allocated memory was 138.4 MB in the beginning and 357.0 MB in the end (delta: 218.6 MB). Free memory was 101.8 MB in the beginning and 205.2 MB in the end (delta: -103.5 MB). Peak memory consumption was 115.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:49:17,521 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:49:17,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.14 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 174.4 MB in the end (delta: -73.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:49:17,523 INFO L168 Benchmark]: Boogie Preprocessor took 75.97 ms. Allocated memory is still 201.3 MB. Free memory was 174.4 MB in the beginning and 171.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:49:17,523 INFO L168 Benchmark]: RCFGBuilder took 1157.00 ms. Allocated memory is still 201.3 MB. Free memory was 170.9 MB in the beginning and 99.7 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:49:17,524 INFO L168 Benchmark]: TraceAbstraction took 11866.54 ms. Allocated memory was 201.3 MB in the beginning and 357.0 MB in the end (delta: 155.7 MB). Free memory was 99.7 MB in the beginning and 205.2 MB in the end (delta: -105.5 MB). Peak memory consumption was 50.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:49:17,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.14 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 174.4 MB in the end (delta: -73.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.97 ms. Allocated memory is still 201.3 MB. Free memory was 174.4 MB in the beginning and 171.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1157.00 ms. Allocated memory is still 201.3 MB. Free memory was 170.9 MB in the beginning and 99.7 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11866.54 ms. Allocated memory was 201.3 MB in the beginning and 357.0 MB in the end (delta: 155.7 MB). Free memory was 99.7 MB in the beginning and 205.2 MB in the end (delta: -105.5 MB). Peak memory consumption was 50.2 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)=17, \old(customIrp)=11, \old(DC)=19, \old(DevicePowerState)=14, \old(Executive)=9, \old(IPC)=12, \old(KernelMode)=16, \old(lowerDriverReturn)=26, \old(MPR1)=10, \old(MPR3)=22, \old(myStatus)=15, \old(NP)=8, \old(pended)=13, \old(s)=20, \old(setEventCalled)=25, \old(SKIP1)=24, \old(SKIP2)=18, \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: 11.6s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4898 SDtfs, 2079 SDslu, 12270 SDs, 0 SdLazy, 1740 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 762 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 902 NumberOfCodeBlocks, 791 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 828 ConstructedInterpolants, 0 QuantifiedInterpolants, 81119 SizeOfPredicates, 27 NumberOfNonLiveVariables, 8863 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...