/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:47:44,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:47:44,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:47:44,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:47:44,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:47:44,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:47:44,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:47:44,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:47:44,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:47:44,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:47:44,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:47:44,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:47:44,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:47:44,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:47:44,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:47:44,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:47:44,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:47:44,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:47:44,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:47:44,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:47:44,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:47:44,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:47:44,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:47:44,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:47:44,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 21:47:44,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 21:47:44,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 21:47:44,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 21:47:44,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 21:47:44,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 21:47:44,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 21:47:44,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 21:47:44,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 21:47:44,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 21:47:44,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 21:47:44,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 21:47:44,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 21:47:44,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 21:47:44,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:47:44,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:47:44,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:47:44,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 21:47:44,292 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:47:44,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:47:44,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:47:44,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:47:44,294 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:47:44,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:47:44,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:47:44,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:47:44,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:47:44,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:47:44,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:47:44,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:47:44,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:47:44,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:47:44,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:47:44,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:47:44,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:47:44,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:47:44,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:47:44,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:47:44,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:47:44,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:47:44,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:47:44,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:47:44,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:47:44,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:47:44,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:44,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:47:44,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:47:44,300 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 -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:47:44,623 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:47:44,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:47:44,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:47:44,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:47:44,642 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:47:44,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-20 21:47:44,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63d3bb0a/3ade485fa90b47fa884e8d3581ec9652/FLAGaa3a8a024 [2020-07-20 21:47:45,279 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:47:45,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-07-20 21:47:45,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63d3bb0a/3ade485fa90b47fa884e8d3581ec9652/FLAGaa3a8a024 [2020-07-20 21:47:45,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f63d3bb0a/3ade485fa90b47fa884e8d3581ec9652 [2020-07-20 21:47:45,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:47:45,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:47:45,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:47:45,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:47:45,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:47:45,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:47:45" (1/1) ... [2020-07-20 21:47:45,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316a3cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:45, skipping insertion in model container [2020-07-20 21:47:45,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:47:45" (1/1) ... [2020-07-20 21:47:45,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:47:45,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:47:45,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:47:45,925 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:47:46,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:47:46,129 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:47:46,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46 WrapperNode [2020-07-20 21:47:46,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:47:46,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:47:46,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:47:46,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:47:46,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (1/1) ... [2020-07-20 21:47:46,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (1/1) ... [2020-07-20 21:47:46,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (1/1) ... [2020-07-20 21:47:46,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (1/1) ... [2020-07-20 21:47:46,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (1/1) ... [2020-07-20 21:47:46,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (1/1) ... [2020-07-20 21:47:46,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (1/1) ... [2020-07-20 21:47:46,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:47:46,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:47:46,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:47:46,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:47:46,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:47:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:47:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:47:46,284 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-07-20 21:47:46,285 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-07-20 21:47:46,285 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-07-20 21:47:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:47:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-07-20 21:47:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-07-20 21:47:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-07-20 21:47:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-07-20 21:47:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-07-20 21:47:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-07-20 21:47:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-07-20 21:47:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-07-20 21:47:46,288 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-07-20 21:47:46,289 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-07-20 21:47:46,289 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-07-20 21:47:46,289 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-07-20 21:47:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:47:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 21:47:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:47:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-07-20 21:47:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-07-20 21:47:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-07-20 21:47:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-07-20 21:47:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-07-20 21:47:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-07-20 21:47:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-07-20 21:47:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-07-20 21:47:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-07-20 21:47:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-07-20 21:47:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-07-20 21:47:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-07-20 21:47:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-07-20 21:47:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-07-20 21:47:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-07-20 21:47:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:47:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-07-20 21:47:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:47:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:47:46,618 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 21:47:46,695 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-07-20 21:47:46,696 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-07-20 21:47:46,722 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 21:47:46,905 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-07-20 21:47:46,906 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-07-20 21:47:46,908 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 21:47:46,976 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-20 21:47:46,978 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-20 21:47:46,990 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 21:47:47,040 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-07-20 21:47:47,040 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-07-20 21:47:47,144 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 21:47:47,162 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-07-20 21:47:47,162 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-07-20 21:47:47,186 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-20 21:47:47,288 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-07-20 21:47:47,289 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-07-20 21:47:47,308 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:47:47,308 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 21:47:47,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:47:47 BoogieIcfgContainer [2020-07-20 21:47:47,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:47:47,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:47:47,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:47:47,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:47:47,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:47:45" (1/3) ... [2020-07-20 21:47:47,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784d1531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:47:47, skipping insertion in model container [2020-07-20 21:47:47,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:46" (2/3) ... [2020-07-20 21:47:47,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784d1531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:47:47, skipping insertion in model container [2020-07-20 21:47:47,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:47:47" (3/3) ... [2020-07-20 21:47:47,324 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-07-20 21:47:47,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:47:47,348 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:47:47,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:47:47,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:47:47,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:47:47,398 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:47:47,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:47:47,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:47:47,399 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:47:47,399 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:47:47,399 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:47:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-07-20 21:47:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 21:47:47,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:47,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:47,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:47,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-07-20 21:47:47,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:47,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207537166] [2020-07-20 21:47:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:47,625 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 21:47:47,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:47,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 21:47:47,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:47,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:47,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207537166] [2020-07-20 21:47:47,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:47,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:47:47,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846472445] [2020-07-20 21:47:47,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:47:47,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:47,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:47:47,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:47,706 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 3 states. [2020-07-20 21:47:47,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:47,823 INFO L93 Difference]: Finished difference Result 390 states and 586 transitions. [2020-07-20 21:47:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:47:47,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 21:47:47,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:47,844 INFO L225 Difference]: With dead ends: 390 [2020-07-20 21:47:47,844 INFO L226 Difference]: Without dead ends: 231 [2020-07-20 21:47:47,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-07-20 21:47:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-07-20 21:47:47,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-20 21:47:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-07-20 21:47:47,942 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-07-20 21:47:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:47,943 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-07-20 21:47:47,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:47:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-07-20 21:47:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 21:47:47,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:47,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:48,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:48,155 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:48,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-07-20 21:47:48,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:48,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134887085] [2020-07-20 21:47:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:48,303 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:47:48,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:48,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 21:47:48,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:48,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:48,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134887085] [2020-07-20 21:47:48,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:48,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:47:48,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640267966] [2020-07-20 21:47:48,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:47:48,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:48,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:47:48,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:48,335 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 3 states. [2020-07-20 21:47:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:48,532 INFO L93 Difference]: Finished difference Result 375 states and 514 transitions. [2020-07-20 21:47:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:47:48,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 21:47:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:48,537 INFO L225 Difference]: With dead ends: 375 [2020-07-20 21:47:48,537 INFO L226 Difference]: Without dead ends: 314 [2020-07-20 21:47:48,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-20 21:47:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 298. [2020-07-20 21:47:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-07-20 21:47:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 408 transitions. [2020-07-20 21:47:48,576 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 408 transitions. Word has length 28 [2020-07-20 21:47:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:48,579 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 408 transitions. [2020-07-20 21:47:48,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:47:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 408 transitions. [2020-07-20 21:47:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 21:47:48,580 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:48,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:48,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:48,797 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:48,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:48,798 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-07-20 21:47:48,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:48,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657616850] [2020-07-20 21:47:48,799 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:48,927 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:47:48,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:48,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 21:47:48,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:48,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:48,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:48,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657616850] [2020-07-20 21:47:48,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:48,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:47:48,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943715345] [2020-07-20 21:47:48,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:47:48,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:48,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:47:48,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:48,952 INFO L87 Difference]: Start difference. First operand 298 states and 408 transitions. Second operand 3 states. [2020-07-20 21:47:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:48,995 INFO L93 Difference]: Finished difference Result 481 states and 640 transitions. [2020-07-20 21:47:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:47:48,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 21:47:48,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:49,000 INFO L225 Difference]: With dead ends: 481 [2020-07-20 21:47:49,000 INFO L226 Difference]: Without dead ends: 362 [2020-07-20 21:47:49,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-07-20 21:47:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 338. [2020-07-20 21:47:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-07-20 21:47:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 459 transitions. [2020-07-20 21:47:49,033 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 459 transitions. Word has length 28 [2020-07-20 21:47:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:49,034 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 459 transitions. [2020-07-20 21:47:49,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:47:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 459 transitions. [2020-07-20 21:47:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 21:47:49,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:49,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:49,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:49,273 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:49,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-07-20 21:47:49,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:49,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472683590] [2020-07-20 21:47:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:49,401 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:49,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:49,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 21:47:49,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:49,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:49,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472683590] [2020-07-20 21:47:49,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:49,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:47:49,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427078341] [2020-07-20 21:47:49,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:47:49,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:49,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:47:49,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:49,433 INFO L87 Difference]: Start difference. First operand 338 states and 459 transitions. Second operand 3 states. [2020-07-20 21:47:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:49,534 INFO L93 Difference]: Finished difference Result 341 states and 461 transitions. [2020-07-20 21:47:49,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:47:49,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-20 21:47:49,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:49,539 INFO L225 Difference]: With dead ends: 341 [2020-07-20 21:47:49,539 INFO L226 Difference]: Without dead ends: 337 [2020-07-20 21:47:49,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-07-20 21:47:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-07-20 21:47:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-07-20 21:47:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 456 transitions. [2020-07-20 21:47:49,576 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 456 transitions. Word has length 38 [2020-07-20 21:47:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:49,578 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 456 transitions. [2020-07-20 21:47:49,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:47:49,581 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 456 transitions. [2020-07-20 21:47:49,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 21:47:49,592 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:49,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:49,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:49,811 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:49,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:49,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-07-20 21:47:49,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:49,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538979291] [2020-07-20 21:47:49,814 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:49,954 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:49,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:49,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:47:49,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:50,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:50,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538979291] [2020-07-20 21:47:50,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:50,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:47:50,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646678890] [2020-07-20 21:47:50,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:47:50,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:50,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:47:50,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:47:50,025 INFO L87 Difference]: Start difference. First operand 337 states and 456 transitions. Second operand 5 states. [2020-07-20 21:47:50,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:50,341 INFO L93 Difference]: Finished difference Result 491 states and 654 transitions. [2020-07-20 21:47:50,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 21:47:50,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-07-20 21:47:50,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:50,348 INFO L225 Difference]: With dead ends: 491 [2020-07-20 21:47:50,349 INFO L226 Difference]: Without dead ends: 406 [2020-07-20 21:47:50,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:47:50,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-07-20 21:47:50,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 355. [2020-07-20 21:47:50,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-07-20 21:47:50,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 478 transitions. [2020-07-20 21:47:50,419 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 478 transitions. Word has length 46 [2020-07-20 21:47:50,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:50,420 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 478 transitions. [2020-07-20 21:47:50,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:47:50,421 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 478 transitions. [2020-07-20 21:47:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 21:47:50,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:50,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:50,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:50,638 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:50,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:50,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1876426227, now seen corresponding path program 1 times [2020-07-20 21:47:50,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:50,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546133513] [2020-07-20 21:47:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:50,755 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:50,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:50,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 21:47:50,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:50,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:50,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546133513] [2020-07-20 21:47:50,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:50,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:47:50,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357252164] [2020-07-20 21:47:50,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:47:50,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:50,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:47:50,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:50,779 INFO L87 Difference]: Start difference. First operand 355 states and 478 transitions. Second operand 3 states. [2020-07-20 21:47:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:50,810 INFO L93 Difference]: Finished difference Result 405 states and 534 transitions. [2020-07-20 21:47:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:47:50,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 21:47:50,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:50,814 INFO L225 Difference]: With dead ends: 405 [2020-07-20 21:47:50,814 INFO L226 Difference]: Without dead ends: 338 [2020-07-20 21:47:50,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-07-20 21:47:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 314. [2020-07-20 21:47:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-07-20 21:47:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 419 transitions. [2020-07-20 21:47:50,836 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 419 transitions. Word has length 46 [2020-07-20 21:47:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:50,837 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 419 transitions. [2020-07-20 21:47:50,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:47:50,837 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 419 transitions. [2020-07-20 21:47:50,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 21:47:50,839 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:50,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:51,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:51,054 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:51,055 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-07-20 21:47:51,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:51,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16640723] [2020-07-20 21:47:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:51,186 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:51,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:51,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:47:51,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:51,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:51,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16640723] [2020-07-20 21:47:51,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:51,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:47:51,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693159547] [2020-07-20 21:47:51,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:47:51,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:51,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:47:51,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:51,211 INFO L87 Difference]: Start difference. First operand 314 states and 419 transitions. Second operand 3 states. [2020-07-20 21:47:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:51,241 INFO L93 Difference]: Finished difference Result 326 states and 434 transitions. [2020-07-20 21:47:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:47:51,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-07-20 21:47:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:51,244 INFO L225 Difference]: With dead ends: 326 [2020-07-20 21:47:51,244 INFO L226 Difference]: Without dead ends: 310 [2020-07-20 21:47:51,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:51,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-07-20 21:47:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 280. [2020-07-20 21:47:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-07-20 21:47:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 377 transitions. [2020-07-20 21:47:51,265 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 377 transitions. Word has length 45 [2020-07-20 21:47:51,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:51,266 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 377 transitions. [2020-07-20 21:47:51,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:47:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 377 transitions. [2020-07-20 21:47:51,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 21:47:51,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:51,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:51,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:51,483 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:51,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-07-20 21:47:51,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:51,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849500883] [2020-07-20 21:47:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:51,630 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:51,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:51,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:47:51,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:51,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:51,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849500883] [2020-07-20 21:47:51,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:51,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:47:51,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577637284] [2020-07-20 21:47:51,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:47:51,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:51,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:47:51,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:51,649 INFO L87 Difference]: Start difference. First operand 280 states and 377 transitions. Second operand 3 states. [2020-07-20 21:47:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:51,727 INFO L93 Difference]: Finished difference Result 300 states and 398 transitions. [2020-07-20 21:47:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:47:51,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 21:47:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:51,730 INFO L225 Difference]: With dead ends: 300 [2020-07-20 21:47:51,731 INFO L226 Difference]: Without dead ends: 258 [2020-07-20 21:47:51,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-20 21:47:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-07-20 21:47:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-07-20 21:47:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 339 transitions. [2020-07-20 21:47:51,748 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 339 transitions. Word has length 46 [2020-07-20 21:47:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:51,749 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 339 transitions. [2020-07-20 21:47:51,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:47:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 339 transitions. [2020-07-20 21:47:51,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 21:47:51,750 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:51,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:51,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:51,965 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-07-20 21:47:51,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:51,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162142921] [2020-07-20 21:47:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:52,063 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:47:52,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:52,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:47:52,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:52,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:52,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162142921] [2020-07-20 21:47:52,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:52,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:47:52,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525615358] [2020-07-20 21:47:52,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:47:52,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:52,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:47:52,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:52,088 INFO L87 Difference]: Start difference. First operand 258 states and 339 transitions. Second operand 3 states. [2020-07-20 21:47:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:52,158 INFO L93 Difference]: Finished difference Result 286 states and 372 transitions. [2020-07-20 21:47:52,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:47:52,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-07-20 21:47:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:52,162 INFO L225 Difference]: With dead ends: 286 [2020-07-20 21:47:52,162 INFO L226 Difference]: Without dead ends: 256 [2020-07-20 21:47:52,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:47:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-20 21:47:52,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-20 21:47:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 21:47:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 335 transitions. [2020-07-20 21:47:52,179 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 335 transitions. Word has length 53 [2020-07-20 21:47:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:52,179 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 335 transitions. [2020-07-20 21:47:52,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:47:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 335 transitions. [2020-07-20 21:47:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 21:47:52,181 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:52,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:52,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:52,395 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:52,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-07-20 21:47:52,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:52,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186229551] [2020-07-20 21:47:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:52,483 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:47:52,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:52,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 21:47:52,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:52,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:52,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186229551] [2020-07-20 21:47:52,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:52,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 21:47:52,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197176366] [2020-07-20 21:47:52,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 21:47:52,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:52,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 21:47:52,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:47:52,560 INFO L87 Difference]: Start difference. First operand 256 states and 335 transitions. Second operand 6 states. [2020-07-20 21:47:52,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:52,919 INFO L93 Difference]: Finished difference Result 297 states and 381 transitions. [2020-07-20 21:47:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:47:52,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-07-20 21:47:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:52,922 INFO L225 Difference]: With dead ends: 297 [2020-07-20 21:47:52,922 INFO L226 Difference]: Without dead ends: 256 [2020-07-20 21:47:52,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:47:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-07-20 21:47:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2020-07-20 21:47:52,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 21:47:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 333 transitions. [2020-07-20 21:47:52,944 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 333 transitions. Word has length 51 [2020-07-20 21:47:52,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:52,945 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 333 transitions. [2020-07-20 21:47:52,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 21:47:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 333 transitions. [2020-07-20 21:47:52,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 21:47:52,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:52,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:53,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:53,163 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:53,163 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-07-20 21:47:53,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:53,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924260770] [2020-07-20 21:47:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:53,293 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:53,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:53,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 21:47:53,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:53,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:53,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924260770] [2020-07-20 21:47:53,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:53,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 21:47:53,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063675924] [2020-07-20 21:47:53,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 21:47:53,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:53,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 21:47:53,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:47:53,346 INFO L87 Difference]: Start difference. First operand 256 states and 333 transitions. Second operand 8 states. [2020-07-20 21:47:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:53,461 INFO L93 Difference]: Finished difference Result 268 states and 345 transitions. [2020-07-20 21:47:53,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:47:53,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-20 21:47:53,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:53,464 INFO L225 Difference]: With dead ends: 268 [2020-07-20 21:47:53,464 INFO L226 Difference]: Without dead ends: 227 [2020-07-20 21:47:53,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:47:53,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-20 21:47:53,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2020-07-20 21:47:53,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-20 21:47:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 294 transitions. [2020-07-20 21:47:53,480 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 294 transitions. Word has length 53 [2020-07-20 21:47:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:53,480 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 294 transitions. [2020-07-20 21:47:53,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 21:47:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 294 transitions. [2020-07-20 21:47:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 21:47:53,481 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:53,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:53,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:53,697 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:53,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:53,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-07-20 21:47:53,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:53,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723856914] [2020-07-20 21:47:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:53,804 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:53,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:53,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 21:47:53,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:53,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:53,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723856914] [2020-07-20 21:47:53,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:53,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 21:47:53,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744979103] [2020-07-20 21:47:53,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 21:47:53,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:53,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 21:47:53,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:47:53,861 INFO L87 Difference]: Start difference. First operand 227 states and 294 transitions. Second operand 9 states. [2020-07-20 21:47:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:54,028 INFO L93 Difference]: Finished difference Result 243 states and 310 transitions. [2020-07-20 21:47:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 21:47:54,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-07-20 21:47:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:54,030 INFO L225 Difference]: With dead ends: 243 [2020-07-20 21:47:54,031 INFO L226 Difference]: Without dead ends: 222 [2020-07-20 21:47:54,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:47:54,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-07-20 21:47:54,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-07-20 21:47:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-07-20 21:47:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 287 transitions. [2020-07-20 21:47:54,045 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 287 transitions. Word has length 54 [2020-07-20 21:47:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:54,046 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 287 transitions. [2020-07-20 21:47:54,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 21:47:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 287 transitions. [2020-07-20 21:47:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 21:47:54,047 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:54,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:54,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:54,262 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:54,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:54,262 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-07-20 21:47:54,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:54,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457115016] [2020-07-20 21:47:54,263 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:54,383 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:54,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:54,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 21:47:54,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:54,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:54,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457115016] [2020-07-20 21:47:54,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:54,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 21:47:54,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991818862] [2020-07-20 21:47:54,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 21:47:54,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:54,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 21:47:54,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:47:54,443 INFO L87 Difference]: Start difference. First operand 222 states and 287 transitions. Second operand 6 states. [2020-07-20 21:47:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:54,512 INFO L93 Difference]: Finished difference Result 259 states and 332 transitions. [2020-07-20 21:47:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:47:54,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 21:47:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:54,515 INFO L225 Difference]: With dead ends: 259 [2020-07-20 21:47:54,515 INFO L226 Difference]: Without dead ends: 252 [2020-07-20 21:47:54,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:47:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-07-20 21:47:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 232. [2020-07-20 21:47:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-20 21:47:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 300 transitions. [2020-07-20 21:47:54,533 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 300 transitions. Word has length 57 [2020-07-20 21:47:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:54,533 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 300 transitions. [2020-07-20 21:47:54,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 21:47:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 300 transitions. [2020-07-20 21:47:54,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 21:47:54,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:54,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:54,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:54,776 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:54,776 INFO L82 PathProgramCache]: Analyzing trace with hash -833535160, now seen corresponding path program 1 times [2020-07-20 21:47:54,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:54,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091358049] [2020-07-20 21:47:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:54,880 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:54,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:54,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 21:47:54,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:54,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:54,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:54,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091358049] [2020-07-20 21:47:54,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:54,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 21:47:54,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894819204] [2020-07-20 21:47:54,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 21:47:54,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:54,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 21:47:54,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-20 21:47:54,961 INFO L87 Difference]: Start difference. First operand 232 states and 300 transitions. Second operand 10 states. [2020-07-20 21:47:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:55,139 INFO L93 Difference]: Finished difference Result 244 states and 312 transitions. [2020-07-20 21:47:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 21:47:55,140 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-07-20 21:47:55,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:55,143 INFO L225 Difference]: With dead ends: 244 [2020-07-20 21:47:55,143 INFO L226 Difference]: Without dead ends: 230 [2020-07-20 21:47:55,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:47:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-07-20 21:47:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-07-20 21:47:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-07-20 21:47:55,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 296 transitions. [2020-07-20 21:47:55,165 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 296 transitions. Word has length 57 [2020-07-20 21:47:55,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:55,165 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 296 transitions. [2020-07-20 21:47:55,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 21:47:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 296 transitions. [2020-07-20 21:47:55,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 21:47:55,172 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:55,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:55,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:55,388 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:55,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-07-20 21:47:55,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:55,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981953361] [2020-07-20 21:47:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:55,495 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:55,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:55,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 21:47:55,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:55,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:55,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981953361] [2020-07-20 21:47:55,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:55,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-20 21:47:55,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983266623] [2020-07-20 21:47:55,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 21:47:55,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:55,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 21:47:55,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-20 21:47:55,575 INFO L87 Difference]: Start difference. First operand 230 states and 296 transitions. Second operand 10 states. [2020-07-20 21:47:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:55,825 INFO L93 Difference]: Finished difference Result 242 states and 308 transitions. [2020-07-20 21:47:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 21:47:55,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-07-20 21:47:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:55,828 INFO L225 Difference]: With dead ends: 242 [2020-07-20 21:47:55,828 INFO L226 Difference]: Without dead ends: 218 [2020-07-20 21:47:55,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:47:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-07-20 21:47:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-07-20 21:47:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-07-20 21:47:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 279 transitions. [2020-07-20 21:47:55,844 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 279 transitions. Word has length 56 [2020-07-20 21:47:55,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:55,844 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 279 transitions. [2020-07-20 21:47:55,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 21:47:55,844 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 279 transitions. [2020-07-20 21:47:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 21:47:55,846 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:55,846 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] [2020-07-20 21:47:56,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:56,062 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:56,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-07-20 21:47:56,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:56,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319327887] [2020-07-20 21:47:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:56,176 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:56,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:56,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 21:47:56,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:56,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:56,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319327887] [2020-07-20 21:47:56,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:56,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 21:47:56,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255547440] [2020-07-20 21:47:56,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 21:47:56,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:56,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 21:47:56,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:47:56,252 INFO L87 Difference]: Start difference. First operand 218 states and 279 transitions. Second operand 8 states. [2020-07-20 21:47:56,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:56,576 INFO L93 Difference]: Finished difference Result 357 states and 436 transitions. [2020-07-20 21:47:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:47:56,577 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-07-20 21:47:56,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:56,579 INFO L225 Difference]: With dead ends: 357 [2020-07-20 21:47:56,579 INFO L226 Difference]: Without dead ends: 289 [2020-07-20 21:47:56,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:47:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-07-20 21:47:56,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 245. [2020-07-20 21:47:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-07-20 21:47:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 311 transitions. [2020-07-20 21:47:56,602 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 311 transitions. Word has length 55 [2020-07-20 21:47:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:56,602 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 311 transitions. [2020-07-20 21:47:56,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 21:47:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 311 transitions. [2020-07-20 21:47:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 21:47:56,604 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:56,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:56,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:56,819 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:56,819 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-07-20 21:47:56,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:56,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629083943] [2020-07-20 21:47:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:56,924 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:56,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:56,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 21:47:56,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:56,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:56,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629083943] [2020-07-20 21:47:56,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:56,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 21:47:56,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083752358] [2020-07-20 21:47:56,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 21:47:56,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:56,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 21:47:56,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:47:56,977 INFO L87 Difference]: Start difference. First operand 245 states and 311 transitions. Second operand 9 states. [2020-07-20 21:47:57,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:57,156 INFO L93 Difference]: Finished difference Result 261 states and 327 transitions. [2020-07-20 21:47:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 21:47:57,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-07-20 21:47:57,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:57,159 INFO L225 Difference]: With dead ends: 261 [2020-07-20 21:47:57,159 INFO L226 Difference]: Without dead ends: 223 [2020-07-20 21:47:57,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:47:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-07-20 21:47:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2020-07-20 21:47:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-07-20 21:47:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-07-20 21:47:57,175 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 55 [2020-07-20 21:47:57,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:57,176 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-07-20 21:47:57,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 21:47:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-07-20 21:47:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-20 21:47:57,178 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:57,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:57,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:57,394 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:57,395 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-07-20 21:47:57,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:57,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507445628] [2020-07-20 21:47:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:57,513 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:57,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:57,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 21:47:57,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:47:57,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:57,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507445628] [2020-07-20 21:47:57,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:57,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:47:57,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541548986] [2020-07-20 21:47:57,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:47:57,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:47:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:47:57,539 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 5 states. [2020-07-20 21:47:57,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:57,566 INFO L93 Difference]: Finished difference Result 273 states and 325 transitions. [2020-07-20 21:47:57,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:47:57,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-07-20 21:47:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:57,568 INFO L225 Difference]: With dead ends: 273 [2020-07-20 21:47:57,568 INFO L226 Difference]: Without dead ends: 214 [2020-07-20 21:47:57,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:47:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-20 21:47:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-07-20 21:47:57,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-07-20 21:47:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2020-07-20 21:47:57,593 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 58 [2020-07-20 21:47:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:57,593 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2020-07-20 21:47:57,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:47:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2020-07-20 21:47:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 21:47:57,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:57,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:57,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:57,810 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:57,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:57,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-07-20 21:47:57,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:57,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921028442] [2020-07-20 21:47:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:57,936 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:47:57,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 21:47:57,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:47:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 21:47:57,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 21:47:58,135 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 21:47:58,135 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 21:47:58,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:58,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:47:58 BoogieIcfgContainer [2020-07-20 21:47:58,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:47:58,545 INFO L168 Benchmark]: Toolchain (without parser) took 13003.60 ms. Allocated memory was 136.3 MB in the beginning and 341.8 MB in the end (delta: 205.5 MB). Free memory was 99.4 MB in the beginning and 94.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 210.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:58,547 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 21:47:58,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.35 ms. Allocated memory was 136.3 MB in the beginning and 201.9 MB in the end (delta: 65.5 MB). Free memory was 99.0 MB in the beginning and 174.7 MB in the end (delta: -75.7 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:58,548 INFO L168 Benchmark]: Boogie Preprocessor took 78.07 ms. Allocated memory is still 201.9 MB. Free memory was 174.7 MB in the beginning and 171.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:58,551 INFO L168 Benchmark]: RCFGBuilder took 1105.31 ms. Allocated memory is still 201.9 MB. Free memory was 171.5 MB in the beginning and 99.9 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:58,552 INFO L168 Benchmark]: TraceAbstraction took 11226.94 ms. Allocated memory was 201.9 MB in the beginning and 341.8 MB in the end (delta: 140.0 MB). Free memory was 99.9 MB in the beginning and 94.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 145.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:58,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 587.35 ms. Allocated memory was 136.3 MB in the beginning and 201.9 MB in the end (delta: 65.5 MB). Free memory was 99.0 MB in the beginning and 174.7 MB in the end (delta: -75.7 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.07 ms. Allocated memory is still 201.9 MB. Free memory was 174.7 MB in the beginning and 171.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1105.31 ms. Allocated memory is still 201.9 MB. Free memory was 171.5 MB in the beginning and 99.9 MB in the end (delta: 71.7 MB). Peak memory consumption was 71.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11226.94 ms. Allocated memory was 201.9 MB in the beginning and 341.8 MB in the end (delta: 140.0 MB). Free memory was 99.9 MB in the beginning and 94.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 145.4 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: 10.9s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4896 SDtfs, 2079 SDslu, 12270 SDs, 0 SdLazy, 1740 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 843 GetRequests, 762 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 902 NumberOfCodeBlocks, 662 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 828 ConstructedInterpolants, 0 QuantifiedInterpolants, 81119 SizeOfPredicates, 27 NumberOfNonLiveVariables, 6863 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...