/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_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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 [2020-07-21 16:15:10,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:15:10,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:15:10,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:15:10,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:15:10,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:15:10,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:15:10,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:15:10,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:15:10,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:15:10,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:15:10,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:15:10,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:15:10,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:15:10,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:15:10,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:15:10,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:15:10,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:15:10,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:15:10,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:15:10,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:15:10,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:15:10,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:15:10,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:15:10,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:15:10,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:15:10,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:15:10,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:15:10,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:15:10,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:15:10,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:15:10,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:15:10,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:15:10,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:15:10,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:15:10,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:15:10,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:15:10,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:15:10,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:15:10,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:15:10,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:15:10,458 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 [2020-07-21 16:15:10,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:15:10,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:15:10,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:15:10,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:15:10,481 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:15:10,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:15:10,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:15:10,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:15:10,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:15:10,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:15:10,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:15:10,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:15:10,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:15:10,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:15:10,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:15:10,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:15:10,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:15:10,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:15:10,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:15:10,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:15:10,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:15:10,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:15:10,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:15:10,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:15:10,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:15:10,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:15:10,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:10,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:15:10,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:15:10,487 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_VARIABLES 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 -> 2 [2020-07-21 16:15:10,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:15:10,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:15:10,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:15:10,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:15:10,769 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:15:10,770 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-21 16:15:10,830 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2073ff68a/71f7a9fc2a8e4aa6b428c4a132cfee55/FLAGdaff27d69 [2020-07-21 16:15:11,286 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:15:11,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-21 16:15:11,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2073ff68a/71f7a9fc2a8e4aa6b428c4a132cfee55/FLAGdaff27d69 [2020-07-21 16:15:11,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2073ff68a/71f7a9fc2a8e4aa6b428c4a132cfee55 [2020-07-21 16:15:11,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:15:11,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:15:11,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:15:11,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:15:11,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:15:11,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:15:11" (1/1) ... [2020-07-21 16:15:11,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98434ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:11, skipping insertion in model container [2020-07-21 16:15:11,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:15:11" (1/1) ... [2020-07-21 16:15:11,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:15:11,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:15:12,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:15:12,017 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:15:12,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:15:12,222 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:15:12,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12 WrapperNode [2020-07-21 16:15:12,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:15:12,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:15:12,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:15:12,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:15:12,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (1/1) ... [2020-07-21 16:15:12,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (1/1) ... [2020-07-21 16:15:12,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (1/1) ... [2020-07-21 16:15:12,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (1/1) ... [2020-07-21 16:15:12,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (1/1) ... [2020-07-21 16:15:12,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (1/1) ... [2020-07-21 16:15:12,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (1/1) ... [2020-07-21 16:15:12,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:15:12,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:15:12,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:15:12,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:15:12,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (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 [2020-07-21 16:15:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:15:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:15:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-07-21 16:15:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-07-21 16:15:12,360 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-07-21 16:15:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:15:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-07-21 16:15:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-07-21 16:15:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-07-21 16:15:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-07-21 16:15:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-07-21 16:15:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-07-21 16:15:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-07-21 16:15:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-07-21 16:15:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-07-21 16:15:12,363 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-07-21 16:15:12,363 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-07-21 16:15:12,363 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-07-21 16:15:12,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:15:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-21 16:15:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:15:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-21 16:15:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-07-21 16:15:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-07-21 16:15:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-07-21 16:15:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-07-21 16:15:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-07-21 16:15:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-07-21 16:15:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-07-21 16:15:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-07-21 16:15:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-07-21 16:15:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-07-21 16:15:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-07-21 16:15:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-07-21 16:15:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-07-21 16:15:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-07-21 16:15:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:15:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-07-21 16:15:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:15:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:15:12,637 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 16:15:12,709 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-21 16:15:12,709 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-21 16:15:12,732 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 16:15:12,845 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-07-21 16:15:12,846 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-07-21 16:15:12,847 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 16:15:13,045 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-21 16:15:13,046 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-21 16:15:13,053 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 16:15:13,095 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-21 16:15:13,096 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-21 16:15:13,205 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 16:15:13,223 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-07-21 16:15:13,223 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-07-21 16:15:13,245 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-21 16:15:13,351 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-07-21 16:15:13,351 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-07-21 16:15:13,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:15:13,370 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 16:15:13,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:15:13 BoogieIcfgContainer [2020-07-21 16:15:13,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:15:13,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:15:13,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:15:13,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:15:13,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:15:11" (1/3) ... [2020-07-21 16:15:13,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd7060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:15:13, skipping insertion in model container [2020-07-21 16:15:13,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:15:12" (2/3) ... [2020-07-21 16:15:13,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd7060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:15:13, skipping insertion in model container [2020-07-21 16:15:13,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:15:13" (3/3) ... [2020-07-21 16:15:13,385 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-07-21 16:15:13,393 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:15:13,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:15:13,415 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:15:13,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:15:13,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:15:13,450 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:15:13,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:15:13,450 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:15:13,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:15:13,450 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:15:13,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:15:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-07-21 16:15:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 16:15:13,481 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:13,482 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] [2020-07-21 16:15:13,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:13,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-07-21 16:15:13,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:13,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801168681] [2020-07-21 16:15:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:13,695 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:13,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:13,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:15:13,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:13,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:13,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801168681] [2020-07-21 16:15:13,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:13,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:13,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541137474] [2020-07-21 16:15:13,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:13,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:13,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:13,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:13,760 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 3 states. [2020-07-21 16:15:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:14,025 INFO L93 Difference]: Finished difference Result 397 states and 597 transitions. [2020-07-21 16:15:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:14,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-21 16:15:14,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:14,056 INFO L225 Difference]: With dead ends: 397 [2020-07-21 16:15:14,056 INFO L226 Difference]: Without dead ends: 231 [2020-07-21 16:15:14,069 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 [2020-07-21 16:15:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-07-21 16:15:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-07-21 16:15:14,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-21 16:15:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-07-21 16:15:14,193 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-07-21 16:15:14,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:14,193 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-07-21 16:15:14,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:14,194 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-07-21 16:15:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 16:15:14,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:14,197 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] [2020-07-21 16:15:14,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:14,398 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:14,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-07-21 16:15:14,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:14,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56417946] [2020-07-21 16:15:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:14,511 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:14,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:14,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:15:14,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:14,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:14,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56417946] [2020-07-21 16:15:14,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:14,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:14,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014127942] [2020-07-21 16:15:14,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:14,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:14,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:14,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:14,545 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 3 states. [2020-07-21 16:15:14,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:14,690 INFO L93 Difference]: Finished difference Result 375 states and 514 transitions. [2020-07-21 16:15:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:14,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-21 16:15:14,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:14,694 INFO L225 Difference]: With dead ends: 375 [2020-07-21 16:15:14,695 INFO L226 Difference]: Without dead ends: 314 [2020-07-21 16:15:14,696 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 [2020-07-21 16:15:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-21 16:15:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 298. [2020-07-21 16:15:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-07-21 16:15:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 408 transitions. [2020-07-21 16:15:14,727 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 408 transitions. Word has length 28 [2020-07-21 16:15:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:14,727 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 408 transitions. [2020-07-21 16:15:14,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 408 transitions. [2020-07-21 16:15:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 16:15:14,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:14,730 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] [2020-07-21 16:15:14,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:14,939 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:14,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:14,940 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-07-21 16:15:14,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:14,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968532689] [2020-07-21 16:15:14,941 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:15,088 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:15,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:15,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:15:15,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:15,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:15,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968532689] [2020-07-21 16:15:15,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:15,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:15,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038319549] [2020-07-21 16:15:15,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:15,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:15,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:15,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:15,111 INFO L87 Difference]: Start difference. First operand 298 states and 408 transitions. Second operand 3 states. [2020-07-21 16:15:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:15,146 INFO L93 Difference]: Finished difference Result 481 states and 640 transitions. [2020-07-21 16:15:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:15,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-21 16:15:15,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:15,150 INFO L225 Difference]: With dead ends: 481 [2020-07-21 16:15:15,151 INFO L226 Difference]: Without dead ends: 362 [2020-07-21 16:15:15,152 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 [2020-07-21 16:15:15,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-07-21 16:15:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 338. [2020-07-21 16:15:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-21 16:15:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 459 transitions. [2020-07-21 16:15:15,178 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 459 transitions. Word has length 28 [2020-07-21 16:15:15,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:15,179 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 459 transitions. [2020-07-21 16:15:15,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 459 transitions. [2020-07-21 16:15:15,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 16:15:15,182 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:15,182 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] [2020-07-21 16:15:15,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:15,396 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:15,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-07-21 16:15:15,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:15,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937674208] [2020-07-21 16:15:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:15,521 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:15,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:15,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 16:15:15,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:15,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:15,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937674208] [2020-07-21 16:15:15,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:15,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:15,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343806789] [2020-07-21 16:15:15,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:15,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:15,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:15,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:15,543 INFO L87 Difference]: Start difference. First operand 338 states and 459 transitions. Second operand 3 states. [2020-07-21 16:15:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:15,627 INFO L93 Difference]: Finished difference Result 341 states and 461 transitions. [2020-07-21 16:15:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:15,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-21 16:15:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:15,630 INFO L225 Difference]: With dead ends: 341 [2020-07-21 16:15:15,630 INFO L226 Difference]: Without dead ends: 337 [2020-07-21 16:15:15,631 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 [2020-07-21 16:15:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-21 16:15:15,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-21 16:15:15,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-21 16:15:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 456 transitions. [2020-07-21 16:15:15,652 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 456 transitions. Word has length 38 [2020-07-21 16:15:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:15,653 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 456 transitions. [2020-07-21 16:15:15,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 456 transitions. [2020-07-21 16:15:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 16:15:15,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:15,657 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] [2020-07-21 16:15:15,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:15,862 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:15,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:15,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-07-21 16:15:15,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:15,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127195085] [2020-07-21 16:15:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:15,987 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:15,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:15,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:15:15,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:16,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:16,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127195085] [2020-07-21 16:15:16,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:16,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:16,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559782448] [2020-07-21 16:15:16,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:16,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:16,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:16,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:16,014 INFO L87 Difference]: Start difference. First operand 337 states and 456 transitions. Second operand 3 states. [2020-07-21 16:15:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:16,058 INFO L93 Difference]: Finished difference Result 388 states and 513 transitions. [2020-07-21 16:15:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:16,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-21 16:15:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:16,062 INFO L225 Difference]: With dead ends: 388 [2020-07-21 16:15:16,062 INFO L226 Difference]: Without dead ends: 319 [2020-07-21 16:15:16,063 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 [2020-07-21 16:15:16,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-07-21 16:15:16,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 298. [2020-07-21 16:15:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-07-21 16:15:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 399 transitions. [2020-07-21 16:15:16,105 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 399 transitions. Word has length 46 [2020-07-21 16:15:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:16,108 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 399 transitions. [2020-07-21 16:15:16,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 399 transitions. [2020-07-21 16:15:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 16:15:16,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:16,116 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] [2020-07-21 16:15:16,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:16,331 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:16,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-07-21 16:15:16,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:16,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104631113] [2020-07-21 16:15:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:16,442 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:16,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:16,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:15:16,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:16,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:16,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104631113] [2020-07-21 16:15:16,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:16,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:15:16,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895185137] [2020-07-21 16:15:16,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:15:16,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:16,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:15:16,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:15:16,518 INFO L87 Difference]: Start difference. First operand 298 states and 399 transitions. Second operand 5 states. [2020-07-21 16:15:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:16,755 INFO L93 Difference]: Finished difference Result 330 states and 435 transitions. [2020-07-21 16:15:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:15:16,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-07-21 16:15:16,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:16,758 INFO L225 Difference]: With dead ends: 330 [2020-07-21 16:15:16,758 INFO L226 Difference]: Without dead ends: 322 [2020-07-21 16:15:16,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:15:16,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-07-21 16:15:16,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 312. [2020-07-21 16:15:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-07-21 16:15:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 415 transitions. [2020-07-21 16:15:16,776 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 415 transitions. Word has length 45 [2020-07-21 16:15:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:16,776 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 415 transitions. [2020-07-21 16:15:16,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:15:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 415 transitions. [2020-07-21 16:15:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 16:15:16,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:16,778 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] [2020-07-21 16:15:16,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:16,994 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:16,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:16,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1397212844, now seen corresponding path program 1 times [2020-07-21 16:15:16,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:16,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43817069] [2020-07-21 16:15:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:17,110 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:17,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:17,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:15:17,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:17,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:17,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43817069] [2020-07-21 16:15:17,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:17,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:17,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138494547] [2020-07-21 16:15:17,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:17,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:17,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:17,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:17,133 INFO L87 Difference]: Start difference. First operand 312 states and 415 transitions. Second operand 3 states. [2020-07-21 16:15:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:17,163 INFO L93 Difference]: Finished difference Result 328 states and 435 transitions. [2020-07-21 16:15:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:17,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-21 16:15:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:17,166 INFO L225 Difference]: With dead ends: 328 [2020-07-21 16:15:17,166 INFO L226 Difference]: Without dead ends: 306 [2020-07-21 16:15:17,166 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 [2020-07-21 16:15:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-21 16:15:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 276. [2020-07-21 16:15:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-07-21 16:15:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 369 transitions. [2020-07-21 16:15:17,204 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 369 transitions. Word has length 46 [2020-07-21 16:15:17,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:17,204 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 369 transitions. [2020-07-21 16:15:17,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:17,204 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 369 transitions. [2020-07-21 16:15:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 16:15:17,206 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:17,206 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] [2020-07-21 16:15:17,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:17,421 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:17,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:17,421 INFO L82 PathProgramCache]: Analyzing trace with hash 372247424, now seen corresponding path program 1 times [2020-07-21 16:15:17,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:17,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087029979] [2020-07-21 16:15:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:17,510 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:17,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:17,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:15:17,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:17,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:17,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087029979] [2020-07-21 16:15:17,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:17,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:15:17,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130393033] [2020-07-21 16:15:17,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:15:17,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:17,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:15:17,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:15:17,574 INFO L87 Difference]: Start difference. First operand 276 states and 369 transitions. Second operand 5 states. [2020-07-21 16:15:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:17,791 INFO L93 Difference]: Finished difference Result 290 states and 382 transitions. [2020-07-21 16:15:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:15:17,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-07-21 16:15:17,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:17,797 INFO L225 Difference]: With dead ends: 290 [2020-07-21 16:15:17,797 INFO L226 Difference]: Without dead ends: 284 [2020-07-21 16:15:17,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:15:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-07-21 16:15:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 277. [2020-07-21 16:15:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-07-21 16:15:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 370 transitions. [2020-07-21 16:15:17,816 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 370 transitions. Word has length 47 [2020-07-21 16:15:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:17,816 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 370 transitions. [2020-07-21 16:15:17,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:15:17,816 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 370 transitions. [2020-07-21 16:15:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 16:15:17,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:17,819 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] [2020-07-21 16:15:18,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:18,033 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:18,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:18,034 INFO L82 PathProgramCache]: Analyzing trace with hash 448848119, now seen corresponding path program 1 times [2020-07-21 16:15:18,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:18,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545487431] [2020-07-21 16:15:18,035 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:18,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:18,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:18,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:15:18,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:18,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:18,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545487431] [2020-07-21 16:15:18,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:18,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:18,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087392910] [2020-07-21 16:15:18,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:18,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:18,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:18,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:18,170 INFO L87 Difference]: Start difference. First operand 277 states and 370 transitions. Second operand 3 states. [2020-07-21 16:15:18,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:18,232 INFO L93 Difference]: Finished difference Result 284 states and 376 transitions. [2020-07-21 16:15:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:18,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 16:15:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:18,234 INFO L225 Difference]: With dead ends: 284 [2020-07-21 16:15:18,235 INFO L226 Difference]: Without dead ends: 242 [2020-07-21 16:15:18,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:18,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-07-21 16:15:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-07-21 16:15:18,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-07-21 16:15:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-07-21 16:15:18,249 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 48 [2020-07-21 16:15:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:18,249 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-07-21 16:15:18,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-07-21 16:15:18,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 16:15:18,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:18,251 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] [2020-07-21 16:15:18,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:18,466 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:18,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:18,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-07-21 16:15:18,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:18,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351588619] [2020-07-21 16:15:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:18,618 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:18,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:18,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:15:18,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:18,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:18,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351588619] [2020-07-21 16:15:18,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:18,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:18,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638466001] [2020-07-21 16:15:18,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:18,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:18,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:18,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:18,636 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 3 states. [2020-07-21 16:15:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:18,697 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-07-21 16:15:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:18,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-21 16:15:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:18,700 INFO L225 Difference]: With dead ends: 270 [2020-07-21 16:15:18,700 INFO L226 Difference]: Without dead ends: 240 [2020-07-21 16:15:18,700 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 [2020-07-21 16:15:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-07-21 16:15:18,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-07-21 16:15:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-21 16:15:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-07-21 16:15:18,714 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-07-21 16:15:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:18,714 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-07-21 16:15:18,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-07-21 16:15:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 16:15:18,716 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:18,716 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] [2020-07-21 16:15:18,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:18,930 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:18,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:18,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-07-21 16:15:18,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:18,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347590808] [2020-07-21 16:15:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:19,014 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:19,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:19,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:15:19,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:19,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:19,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347590808] [2020-07-21 16:15:19,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:19,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:15:19,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93861836] [2020-07-21 16:15:19,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:15:19,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:19,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:15:19,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:15:19,069 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 6 states. [2020-07-21 16:15:19,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:19,364 INFO L93 Difference]: Finished difference Result 281 states and 363 transitions. [2020-07-21 16:15:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 16:15:19,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-21 16:15:19,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:19,367 INFO L225 Difference]: With dead ends: 281 [2020-07-21 16:15:19,367 INFO L226 Difference]: Without dead ends: 240 [2020-07-21 16:15:19,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:15:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-07-21 16:15:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-07-21 16:15:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-07-21 16:15:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-07-21 16:15:19,383 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 51 [2020-07-21 16:15:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:19,383 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-07-21 16:15:19,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:15:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-07-21 16:15:19,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 16:15:19,385 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:19,385 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] [2020-07-21 16:15:19,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:19,601 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-07-21 16:15:19,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:19,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803822577] [2020-07-21 16:15:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:19,715 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:19,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:19,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 16:15:19,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:19,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:19,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803822577] [2020-07-21 16:15:19,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:19,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 16:15:19,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614574090] [2020-07-21 16:15:19,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 16:15:19,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:19,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 16:15:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:15:19,760 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 8 states. [2020-07-21 16:15:19,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:19,903 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-07-21 16:15:19,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 16:15:19,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-21 16:15:19,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:19,907 INFO L225 Difference]: With dead ends: 252 [2020-07-21 16:15:19,907 INFO L226 Difference]: Without dead ends: 211 [2020-07-21 16:15:19,908 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 [2020-07-21 16:15:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-21 16:15:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-07-21 16:15:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-21 16:15:19,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-07-21 16:15:19,920 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-07-21 16:15:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:19,921 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-07-21 16:15:19,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 16:15:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-07-21 16:15:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-21 16:15:19,922 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:19,922 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] [2020-07-21 16:15:20,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:20,137 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:20,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:20,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-07-21 16:15:20,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:20,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123174666] [2020-07-21 16:15:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:20,250 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:20,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:20,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 16:15:20,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:20,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:20,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123174666] [2020-07-21 16:15:20,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:20,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 16:15:20,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261933592] [2020-07-21 16:15:20,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 16:15:20,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:20,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 16:15:20,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:15:20,313 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 9 states. [2020-07-21 16:15:20,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:20,459 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-07-21 16:15:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 16:15:20,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-07-21 16:15:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:20,461 INFO L225 Difference]: With dead ends: 227 [2020-07-21 16:15:20,462 INFO L226 Difference]: Without dead ends: 206 [2020-07-21 16:15:20,462 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 [2020-07-21 16:15:20,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-07-21 16:15:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-07-21 16:15:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-21 16:15:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-07-21 16:15:20,476 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-07-21 16:15:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:20,476 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-07-21 16:15:20,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 16:15:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-07-21 16:15:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 16:15:20,478 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:20,478 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] [2020-07-21 16:15:20,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:20,694 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:20,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:20,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-07-21 16:15:20,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:20,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849656301] [2020-07-21 16:15:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:20,816 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:20,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:20,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:15:20,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:20,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:20,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849656301] [2020-07-21 16:15:20,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:20,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:20,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800426829] [2020-07-21 16:15:20,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:20,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:20,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:20,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:20,838 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 3 states. [2020-07-21 16:15:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:20,887 INFO L93 Difference]: Finished difference Result 222 states and 286 transitions. [2020-07-21 16:15:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:20,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-07-21 16:15:20,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:20,891 INFO L225 Difference]: With dead ends: 222 [2020-07-21 16:15:20,891 INFO L226 Difference]: Without dead ends: 217 [2020-07-21 16:15:20,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:20,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-21 16:15:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 208. [2020-07-21 16:15:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-21 16:15:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 270 transitions. [2020-07-21 16:15:20,906 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 270 transitions. Word has length 57 [2020-07-21 16:15:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:20,906 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 270 transitions. [2020-07-21 16:15:20,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 270 transitions. [2020-07-21 16:15:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 16:15:20,907 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:20,908 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] [2020-07-21 16:15:21,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:21,122 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:21,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:21,122 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-07-21 16:15:21,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:21,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565572193] [2020-07-21 16:15:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:21,312 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:21,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:21,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:15:21,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:21,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:21,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565572193] [2020-07-21 16:15:21,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:21,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:15:21,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746444681] [2020-07-21 16:15:21,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:15:21,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:21,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:15:21,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:15:21,363 INFO L87 Difference]: Start difference. First operand 208 states and 270 transitions. Second operand 6 states. [2020-07-21 16:15:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:21,436 INFO L93 Difference]: Finished difference Result 245 states and 315 transitions. [2020-07-21 16:15:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:15:21,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 16:15:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:21,438 INFO L225 Difference]: With dead ends: 245 [2020-07-21 16:15:21,438 INFO L226 Difference]: Without dead ends: 238 [2020-07-21 16:15:21,439 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 [2020-07-21 16:15:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-21 16:15:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 218. [2020-07-21 16:15:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-21 16:15:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 283 transitions. [2020-07-21 16:15:21,451 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 283 transitions. Word has length 57 [2020-07-21 16:15:21,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:21,451 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 283 transitions. [2020-07-21 16:15:21,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:15:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 283 transitions. [2020-07-21 16:15:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 16:15:21,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:21,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:15:21,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:21,666 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:21,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:21,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-07-21 16:15:21,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:21,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479255087] [2020-07-21 16:15:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:21,796 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:21,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:21,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:15:21,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:21,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:21,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479255087] [2020-07-21 16:15:21,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:21,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:15:21,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943527556] [2020-07-21 16:15:21,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:15:21,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:21,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:15:21,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:21,810 INFO L87 Difference]: Start difference. First operand 218 states and 283 transitions. Second operand 3 states. [2020-07-21 16:15:21,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:21,828 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-07-21 16:15:21,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:15:21,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-21 16:15:21,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:21,830 INFO L225 Difference]: With dead ends: 258 [2020-07-21 16:15:21,830 INFO L226 Difference]: Without dead ends: 217 [2020-07-21 16:15:21,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:15:21,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-07-21 16:15:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-07-21 16:15:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-07-21 16:15:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 278 transitions. [2020-07-21 16:15:21,843 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 278 transitions. Word has length 60 [2020-07-21 16:15:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:21,844 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 278 transitions. [2020-07-21 16:15:21,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:15:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 278 transitions. [2020-07-21 16:15:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 16:15:21,845 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:21,846 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] [2020-07-21 16:15:22,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:22,060 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:22,060 INFO L82 PathProgramCache]: Analyzing trace with hash -833535160, now seen corresponding path program 1 times [2020-07-21 16:15:22,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:22,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684425593] [2020-07-21 16:15:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:22,222 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:22,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:22,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 16:15:22,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:22,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:22,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684425593] [2020-07-21 16:15:22,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:22,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 16:15:22,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495038399] [2020-07-21 16:15:22,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 16:15:22,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:22,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 16:15:22,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-21 16:15:22,287 INFO L87 Difference]: Start difference. First operand 217 states and 278 transitions. Second operand 10 states. [2020-07-21 16:15:22,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:22,438 INFO L93 Difference]: Finished difference Result 229 states and 290 transitions. [2020-07-21 16:15:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 16:15:22,439 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-07-21 16:15:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:22,440 INFO L225 Difference]: With dead ends: 229 [2020-07-21 16:15:22,440 INFO L226 Difference]: Without dead ends: 215 [2020-07-21 16:15:22,441 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 [2020-07-21 16:15:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-07-21 16:15:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-07-21 16:15:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-21 16:15:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 274 transitions. [2020-07-21 16:15:22,456 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 274 transitions. Word has length 57 [2020-07-21 16:15:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:22,457 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 274 transitions. [2020-07-21 16:15:22,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 16:15:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 274 transitions. [2020-07-21 16:15:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 16:15:22,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:22,458 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] [2020-07-21 16:15:22,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:22,673 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:22,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:22,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-07-21 16:15:22,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:22,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258972684] [2020-07-21 16:15:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:22,800 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:22,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:22,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 16:15:22,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:22,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:22,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258972684] [2020-07-21 16:15:22,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:22,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 16:15:22,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324065889] [2020-07-21 16:15:22,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 16:15:22,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:22,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 16:15:22,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-21 16:15:22,862 INFO L87 Difference]: Start difference. First operand 215 states and 274 transitions. Second operand 10 states. [2020-07-21 16:15:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:23,029 INFO L93 Difference]: Finished difference Result 227 states and 286 transitions. [2020-07-21 16:15:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 16:15:23,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-07-21 16:15:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:23,031 INFO L225 Difference]: With dead ends: 227 [2020-07-21 16:15:23,032 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 16:15:23,032 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 [2020-07-21 16:15:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 16:15:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 16:15:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 16:15:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 257 transitions. [2020-07-21 16:15:23,048 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 257 transitions. Word has length 56 [2020-07-21 16:15:23,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:23,049 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 257 transitions. [2020-07-21 16:15:23,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 16:15:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 257 transitions. [2020-07-21 16:15:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 16:15:23,050 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:23,050 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] [2020-07-21 16:15:23,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:23,264 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:23,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-07-21 16:15:23,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:23,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788282476] [2020-07-21 16:15:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:15:23,370 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:23,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:23,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 16:15:23,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:23,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:23,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788282476] [2020-07-21 16:15:23,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:23,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 16:15:23,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119134633] [2020-07-21 16:15:23,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 16:15:23,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:23,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 16:15:23,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:15:23,428 INFO L87 Difference]: Start difference. First operand 203 states and 257 transitions. Second operand 8 states. [2020-07-21 16:15:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:23,667 INFO L93 Difference]: Finished difference Result 347 states and 420 transitions. [2020-07-21 16:15:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 16:15:23,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-07-21 16:15:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:23,670 INFO L225 Difference]: With dead ends: 347 [2020-07-21 16:15:23,670 INFO L226 Difference]: Without dead ends: 277 [2020-07-21 16:15:23,671 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 [2020-07-21 16:15:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-21 16:15:23,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 233. [2020-07-21 16:15:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-07-21 16:15:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 294 transitions. [2020-07-21 16:15:23,685 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 294 transitions. Word has length 55 [2020-07-21 16:15:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:23,685 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 294 transitions. [2020-07-21 16:15:23,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 16:15:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 294 transitions. [2020-07-21 16:15:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 16:15:23,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:23,687 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] [2020-07-21 16:15:23,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:23,900 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:23,900 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-07-21 16:15:23,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:23,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480589530] [2020-07-21 16:15:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:24,000 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:15:24,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:24,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 16:15:24,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:24,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:24,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480589530] [2020-07-21 16:15:24,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:24,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 16:15:24,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974206100] [2020-07-21 16:15:24,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 16:15:24,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:24,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 16:15:24,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:15:24,068 INFO L87 Difference]: Start difference. First operand 233 states and 294 transitions. Second operand 9 states. [2020-07-21 16:15:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:24,215 INFO L93 Difference]: Finished difference Result 249 states and 310 transitions. [2020-07-21 16:15:24,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 16:15:24,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-07-21 16:15:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:24,218 INFO L225 Difference]: With dead ends: 249 [2020-07-21 16:15:24,218 INFO L226 Difference]: Without dead ends: 211 [2020-07-21 16:15:24,219 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 [2020-07-21 16:15:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-07-21 16:15:24,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-07-21 16:15:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-07-21 16:15:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 251 transitions. [2020-07-21 16:15:24,232 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 251 transitions. Word has length 55 [2020-07-21 16:15:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:24,232 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 251 transitions. [2020-07-21 16:15:24,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 16:15:24,232 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 251 transitions. [2020-07-21 16:15:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 16:15:24,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:24,235 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] [2020-07-21 16:15:24,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:24,449 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:24,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:24,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1089521377, now seen corresponding path program 1 times [2020-07-21 16:15:24,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:24,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015431548] [2020-07-21 16:15:24,450 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:24,587 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:24,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:24,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:15:24,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:24,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:24,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015431548] [2020-07-21 16:15:24,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:24,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:15:24,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416551792] [2020-07-21 16:15:24,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:15:24,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:24,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:15:24,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:15:24,625 INFO L87 Difference]: Start difference. First operand 211 states and 251 transitions. Second operand 6 states. [2020-07-21 16:15:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:24,668 INFO L93 Difference]: Finished difference Result 291 states and 343 transitions. [2020-07-21 16:15:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:15:24,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-07-21 16:15:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:24,670 INFO L225 Difference]: With dead ends: 291 [2020-07-21 16:15:24,670 INFO L226 Difference]: Without dead ends: 204 [2020-07-21 16:15:24,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:15:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-07-21 16:15:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2020-07-21 16:15:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-07-21 16:15:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 225 transitions. [2020-07-21 16:15:24,681 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 225 transitions. Word has length 58 [2020-07-21 16:15:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:24,681 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 225 transitions. [2020-07-21 16:15:24,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:15:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 225 transitions. [2020-07-21 16:15:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 16:15:24,682 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:24,682 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] [2020-07-21 16:15:24,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:24,896 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:24,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-07-21 16:15:24,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:24,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534509477] [2020-07-21 16:15:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:25,017 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:25,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:15:25,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 16:15:25,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:15:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:15:25,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:15:25,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534509477] [2020-07-21 16:15:25,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:15:25,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:15:25,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796707033] [2020-07-21 16:15:25,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:15:25,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:15:25,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:15:25,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:15:25,046 INFO L87 Difference]: Start difference. First operand 192 states and 225 transitions. Second operand 5 states. [2020-07-21 16:15:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:15:25,061 INFO L93 Difference]: Finished difference Result 237 states and 275 transitions. [2020-07-21 16:15:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:15:25,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-07-21 16:15:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:15:25,065 INFO L225 Difference]: With dead ends: 237 [2020-07-21 16:15:25,065 INFO L226 Difference]: Without dead ends: 187 [2020-07-21 16:15:25,067 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 [2020-07-21 16:15:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-21 16:15:25,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-07-21 16:15:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-07-21 16:15:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 217 transitions. [2020-07-21 16:15:25,077 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 217 transitions. Word has length 58 [2020-07-21 16:15:25,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:15:25,077 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 217 transitions. [2020-07-21 16:15:25,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:15:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 217 transitions. [2020-07-21 16:15:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 16:15:25,079 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:15:25,079 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] [2020-07-21 16:15:25,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:25,294 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:15:25,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:15:25,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-07-21 16:15:25,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:15:25,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213552858] [2020-07-21 16:15:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:25,410 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:15:25,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:15:25,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:15:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:15:25,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:15:25,532 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:15:25,532 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:15:25,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:15:25,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:15:25 BoogieIcfgContainer [2020-07-21 16:15:25,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:15:25,859 INFO L168 Benchmark]: Toolchain (without parser) took 14188.64 ms. Allocated memory was 137.9 MB in the beginning and 347.1 MB in the end (delta: 209.2 MB). Free memory was 101.6 MB in the beginning and 144.4 MB in the end (delta: -42.8 MB). Peak memory consumption was 166.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:25,860 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 16:15:25,860 INFO L168 Benchmark]: CACSL2BoogieTranslator took 551.22 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 101.2 MB in the beginning and 176.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:25,861 INFO L168 Benchmark]: Boogie Preprocessor took 67.30 ms. Allocated memory is still 203.4 MB. Free memory was 176.4 MB in the beginning and 173.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:25,861 INFO L168 Benchmark]: RCFGBuilder took 1086.77 ms. Allocated memory is still 203.4 MB. Free memory was 173.2 MB in the beginning and 101.5 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:25,862 INFO L168 Benchmark]: TraceAbstraction took 12477.73 ms. Allocated memory was 203.4 MB in the beginning and 347.1 MB in the end (delta: 143.7 MB). Free memory was 101.5 MB in the beginning and 144.4 MB in the end (delta: -42.9 MB). Peak memory consumption was 100.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:15:25,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 551.22 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 101.2 MB in the beginning and 176.4 MB in the end (delta: -75.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.30 ms. Allocated memory is still 203.4 MB. Free memory was 176.4 MB in the beginning and 173.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1086.77 ms. Allocated memory is still 203.4 MB. Free memory was 173.2 MB in the beginning and 101.5 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12477.73 ms. Allocated memory was 203.4 MB in the beginning and 347.1 MB in the end (delta: 143.7 MB). Free memory was 101.5 MB in the beginning and 144.4 MB in the end (delta: -42.9 MB). Peak memory consumption was 100.8 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, tmp_ndt_3=3, UNLOADED=0] [L451] CALL errorFn() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L1011] __VERIFIER_error() VAL [\old(compFptr)=0, \old(compRegistered)=0, \old(customIrp)=0, \old(DC)=0, \old(DevicePowerState)=0, \old(Executive)=0, \old(IPC)=0, \old(KernelMode)=0, \old(lowerDriverReturn)=0, \old(MPR1)=0, \old(MPR3)=0, \old(myStatus)=0, \old(NP)=0, \old(pended)=0, \old(s)=0, \old(setEventCalled)=0, \old(SKIP1)=0, \old(SKIP2)=0, \old(UNLOADED)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.2s, OverallIterations: 23, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5784 SDtfs, 2171 SDslu, 13590 SDs, 0 SdLazy, 2001 SolverSat, 183 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1064 GetRequests, 973 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=338occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 193 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1126 NumberOfCodeBlocks, 1005 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 1048 ConstructedInterpolants, 0 QuantifiedInterpolants, 104404 SizeOfPredicates, 33 NumberOfNonLiveVariables, 11403 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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...