/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -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 0.1.25-5644d1e-m [2020-08-19 01:09:03,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:09:03,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:09:03,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:09:03,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:09:03,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:09:03,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:09:03,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:09:03,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:09:03,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:09:03,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:09:03,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:09:03,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:09:03,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:09:03,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:09:03,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:09:03,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:09:03,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:09:03,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:09:03,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:09:03,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:09:03,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:09:03,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:09:03,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:09:03,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:09:03,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:09:03,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:09:03,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:09:03,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:09:03,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:09:03,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:09:03,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:09:03,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:09:03,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:09:03,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:09:03,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:09:03,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:09:03,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:09:03,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:09:03,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:09:03,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:09:03,341 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:09:03,365 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:09:03,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:09:03,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:09:03,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:09:03,370 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:09:03,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:09:03,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:09:03,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:09:03,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:09:03,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:09:03,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:09:03,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:09:03,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:09:03,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:09:03,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:09:03,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:09:03,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:09:03,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:09:03,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:09:03,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:09:03,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:09:03,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:03,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:09:03,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:09:03,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:09:03,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:09:03,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:09:03,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:09:03,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:09:03,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:09:03,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:09:03,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:09:03,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:09:03,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:09:03,742 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:09:03,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-19 01:09:03,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94065d893/4aaf415a28e5413994444bb6dc345771/FLAG8c828ea15 [2020-08-19 01:09:04,359 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:09:04,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-19 01:09:04,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94065d893/4aaf415a28e5413994444bb6dc345771/FLAG8c828ea15 [2020-08-19 01:09:04,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94065d893/4aaf415a28e5413994444bb6dc345771 [2020-08-19 01:09:04,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:09:04,690 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:09:04,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:04,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:09:04,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:09:04,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:04" (1/1) ... [2020-08-19 01:09:04,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:04, skipping insertion in model container [2020-08-19 01:09:04,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:04" (1/1) ... [2020-08-19 01:09:04,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:09:04,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:09:05,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:05,267 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:09:05,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:05,446 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:09:05,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05 WrapperNode [2020-08-19 01:09:05,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:05,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:09:05,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:09:05,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:09:05,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (1/1) ... [2020-08-19 01:09:05,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (1/1) ... [2020-08-19 01:09:05,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (1/1) ... [2020-08-19 01:09:05,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (1/1) ... [2020-08-19 01:09:05,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (1/1) ... [2020-08-19 01:09:05,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (1/1) ... [2020-08-19 01:09:05,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (1/1) ... [2020-08-19 01:09:05,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:09:05,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:09:05,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:09:05,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:09:05,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 01:09:05,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:09:05,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:09:05,616 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-19 01:09:05,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-19 01:09:05,616 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-19 01:09:05,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:09:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-19 01:09:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-19 01:09:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-19 01:09:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-19 01:09:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-19 01:09:05,617 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-19 01:09:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-19 01:09:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-19 01:09:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-19 01:09:05,623 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-19 01:09:05,624 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-19 01:09:05,624 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-19 01:09:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:09:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 01:09:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:09:05,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 01:09:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-19 01:09:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-19 01:09:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-19 01:09:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-19 01:09:05,625 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-19 01:09:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-19 01:09:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-19 01:09:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-19 01:09:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-19 01:09:05,626 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-19 01:09:05,627 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-19 01:09:05,627 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-19 01:09:05,627 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-19 01:09:05,627 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-19 01:09:05,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:09:05,628 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-19 01:09:05,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:09:05,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:09:05,931 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 01:09:06,013 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-19 01:09:06,013 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-19 01:09:06,033 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 01:09:06,145 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-19 01:09:06,145 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-19 01:09:06,147 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 01:09:06,208 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-19 01:09:06,208 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-19 01:09:06,214 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 01:09:06,258 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-19 01:09:06,258 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-19 01:09:06,365 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 01:09:06,382 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-19 01:09:06,382 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-19 01:09:06,405 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 01:09:06,504 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-19 01:09:06,505 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-19 01:09:06,523 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:09:06,524 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 01:09:06,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:06 BoogieIcfgContainer [2020-08-19 01:09:06,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:09:06,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:09:06,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:09:06,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:09:06,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:09:04" (1/3) ... [2020-08-19 01:09:06,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cc5914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:06, skipping insertion in model container [2020-08-19 01:09:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:05" (2/3) ... [2020-08-19 01:09:06,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14cc5914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:06, skipping insertion in model container [2020-08-19 01:09:06,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:06" (3/3) ... [2020-08-19 01:09:06,541 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-19 01:09:06,553 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:09:06,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:09:06,578 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:09:06,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:09:06,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:09:06,609 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:09:06,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:09:06,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:09:06,610 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:09:06,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:09:06,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:09:06,636 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-08-19 01:09:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:09:06,645 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:06,646 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] [2020-08-19 01:09:06,647 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:06,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-08-19 01:09:06,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:06,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561722326] [2020-08-19 01:09:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:07,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561722326] [2020-08-19 01:09:07,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:07,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:09:07,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670103920] [2020-08-19 01:09:07,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:09:07,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:07,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:09:07,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:07,149 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-08-19 01:09:08,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:08,242 INFO L93 Difference]: Finished difference Result 418 states and 629 transitions. [2020-08-19 01:09:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:09:08,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-19 01:09:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:08,261 INFO L225 Difference]: With dead ends: 418 [2020-08-19 01:09:08,261 INFO L226 Difference]: Without dead ends: 259 [2020-08-19 01:09:08,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:08,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-19 01:09:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2020-08-19 01:09:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-19 01:09:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-08-19 01:09:08,350 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-08-19 01:09:08,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:08,351 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-08-19 01:09:08,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:09:08,351 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-08-19 01:09:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 01:09:08,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:08,353 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] [2020-08-19 01:09:08,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:09:08,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:08,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:08,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-08-19 01:09:08,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:08,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158640043] [2020-08-19 01:09:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:08,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158640043] [2020-08-19 01:09:08,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:08,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:09:08,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312147567] [2020-08-19 01:09:08,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:09:08,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:08,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:09:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:08,613 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 6 states. [2020-08-19 01:09:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:09,927 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2020-08-19 01:09:09,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:09:09,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 01:09:09,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:09,932 INFO L225 Difference]: With dead ends: 410 [2020-08-19 01:09:09,932 INFO L226 Difference]: Without dead ends: 349 [2020-08-19 01:09:09,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:09:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-19 01:09:09,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2020-08-19 01:09:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 01:09:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2020-08-19 01:09:09,994 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2020-08-19 01:09:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:09,994 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2020-08-19 01:09:09,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:09:09,995 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2020-08-19 01:09:09,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 01:09:09,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:09,996 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] [2020-08-19 01:09:09,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:09:09,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:09,997 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-08-19 01:09:09,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:09,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516737284] [2020-08-19 01:09:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:10,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:10,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516737284] [2020-08-19 01:09:10,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:10,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:09:10,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000711139] [2020-08-19 01:09:10,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:09:10,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:10,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:09:10,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:10,200 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand 6 states. [2020-08-19 01:09:11,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:11,127 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2020-08-19 01:09:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:09:11,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 01:09:11,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:11,138 INFO L225 Difference]: With dead ends: 487 [2020-08-19 01:09:11,138 INFO L226 Difference]: Without dead ends: 368 [2020-08-19 01:09:11,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:09:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-08-19 01:09:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2020-08-19 01:09:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-19 01:09:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2020-08-19 01:09:11,197 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2020-08-19 01:09:11,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:11,197 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2020-08-19 01:09:11,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:09:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2020-08-19 01:09:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-19 01:09:11,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:11,201 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] [2020-08-19 01:09:11,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:09:11,202 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:11,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-08-19 01:09:11,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:11,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59931993] [2020-08-19 01:09:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:11,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:11,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:11,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59931993] [2020-08-19 01:09:11,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:11,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:09:11,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229140816] [2020-08-19 01:09:11,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:09:11,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:11,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:09:11,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:09:11,391 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand 6 states. [2020-08-19 01:09:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:12,248 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2020-08-19 01:09:12,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:09:12,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-19 01:09:12,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:12,259 INFO L225 Difference]: With dead ends: 347 [2020-08-19 01:09:12,260 INFO L226 Difference]: Without dead ends: 343 [2020-08-19 01:09:12,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:09:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-19 01:09:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-08-19 01:09:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-19 01:09:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2020-08-19 01:09:12,308 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2020-08-19 01:09:12,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:12,309 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2020-08-19 01:09:12,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:09:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2020-08-19 01:09:12,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:09:12,323 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:12,323 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] [2020-08-19 01:09:12,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:09:12,327 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:12,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:12,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-08-19 01:09:12,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:12,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220123432] [2020-08-19 01:09:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:12,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:12,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:12,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:09:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:12,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220123432] [2020-08-19 01:09:12,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:12,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:09:12,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938422892] [2020-08-19 01:09:12,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:09:12,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:12,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:09:12,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:09:12,557 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand 8 states. [2020-08-19 01:09:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:13,766 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2020-08-19 01:09:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:09:13,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-19 01:09:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:13,771 INFO L225 Difference]: With dead ends: 394 [2020-08-19 01:09:13,771 INFO L226 Difference]: Without dead ends: 325 [2020-08-19 01:09:13,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:09:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-19 01:09:13,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2020-08-19 01:09:13,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 01:09:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2020-08-19 01:09:13,797 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2020-08-19 01:09:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:13,798 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2020-08-19 01:09:13,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:09:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2020-08-19 01:09:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-19 01:09:13,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:13,800 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] [2020-08-19 01:09:13,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:09:13,801 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:13,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:13,801 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-08-19 01:09:13,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:13,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017869681] [2020-08-19 01:09:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:13,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:13,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:13,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:13,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:09:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:13,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:09:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:14,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017869681] [2020-08-19 01:09:14,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:14,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:09:14,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677494493] [2020-08-19 01:09:14,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:09:14,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:14,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:09:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:09:14,008 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand 8 states. [2020-08-19 01:09:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:14,522 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2020-08-19 01:09:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:09:14,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-19 01:09:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:14,526 INFO L225 Difference]: With dead ends: 316 [2020-08-19 01:09:14,526 INFO L226 Difference]: Without dead ends: 300 [2020-08-19 01:09:14,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:09:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-19 01:09:14,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2020-08-19 01:09:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-19 01:09:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-08-19 01:09:14,553 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 45 [2020-08-19 01:09:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:14,553 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-08-19 01:09:14,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:09:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-08-19 01:09:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:09:14,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:14,555 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] [2020-08-19 01:09:14,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:09:14,555 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:14,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:14,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-08-19 01:09:14,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:14,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83597739] [2020-08-19 01:09:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:14,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:14,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:14,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:09:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:09:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:14,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83597739] [2020-08-19 01:09:14,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:14,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:09:14,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716870874] [2020-08-19 01:09:14,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:09:14,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:09:14,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:09:14,760 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-08-19 01:09:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:15,688 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-08-19 01:09:15,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:09:15,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-19 01:09:15,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:15,691 INFO L225 Difference]: With dead ends: 290 [2020-08-19 01:09:15,691 INFO L226 Difference]: Without dead ends: 242 [2020-08-19 01:09:15,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:09:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-19 01:09:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-19 01:09:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 01:09:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-08-19 01:09:15,709 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-08-19 01:09:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:15,709 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-08-19 01:09:15,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:09:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-08-19 01:09:15,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 01:09:15,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:15,711 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] [2020-08-19 01:09:15,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:09:15,711 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-08-19 01:09:15,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:15,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445663371] [2020-08-19 01:09:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:09:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:09:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:15,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445663371] [2020-08-19 01:09:15,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:15,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:09:15,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115311379] [2020-08-19 01:09:15,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:09:15,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:15,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:09:15,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:09:15,900 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-08-19 01:09:16,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:16,536 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-08-19 01:09:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:09:16,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-19 01:09:16,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:16,539 INFO L225 Difference]: With dead ends: 270 [2020-08-19 01:09:16,539 INFO L226 Difference]: Without dead ends: 240 [2020-08-19 01:09:16,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:09:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-19 01:09:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-08-19 01:09:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 01:09:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-08-19 01:09:16,557 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-08-19 01:09:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:16,558 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-08-19 01:09:16,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:09:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-08-19 01:09:16,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:09:16,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:16,560 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] [2020-08-19 01:09:16,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:09:16,560 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:16,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-08-19 01:09:16,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:16,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618468416] [2020-08-19 01:09:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:09:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:16,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618468416] [2020-08-19 01:09:16,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:16,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:09:16,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324072074] [2020-08-19 01:09:16,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:09:16,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:16,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:09:16,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:09:16,753 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 9 states. [2020-08-19 01:09:18,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:18,154 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-08-19 01:09:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:09:18,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-19 01:09:18,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:18,162 INFO L225 Difference]: With dead ends: 313 [2020-08-19 01:09:18,162 INFO L226 Difference]: Without dead ends: 307 [2020-08-19 01:09:18,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:09:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-19 01:09:18,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-08-19 01:09:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-19 01:09:18,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-08-19 01:09:18,185 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-08-19 01:09:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:18,186 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-08-19 01:09:18,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:09:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-08-19 01:09:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:09:18,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:18,188 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] [2020-08-19 01:09:18,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:09:18,188 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:18,189 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-08-19 01:09:18,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:18,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896540748] [2020-08-19 01:09:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:09:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:18,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896540748] [2020-08-19 01:09:18,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:18,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 01:09:18,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141156108] [2020-08-19 01:09:18,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:09:18,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:18,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:09:18,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:09:18,441 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 13 states. [2020-08-19 01:09:20,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:20,599 INFO L93 Difference]: Finished difference Result 325 states and 410 transitions. [2020-08-19 01:09:20,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 01:09:20,599 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-08-19 01:09:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:20,601 INFO L225 Difference]: With dead ends: 325 [2020-08-19 01:09:20,601 INFO L226 Difference]: Without dead ends: 284 [2020-08-19 01:09:20,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:09:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-19 01:09:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2020-08-19 01:09:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 01:09:20,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-08-19 01:09:20,639 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-08-19 01:09:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:20,639 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-08-19 01:09:20,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:09:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-08-19 01:09:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 01:09:20,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:20,642 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] [2020-08-19 01:09:20,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:09:20,642 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:20,643 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-08-19 01:09:20,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:20,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563312203] [2020-08-19 01:09:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 01:09:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:20,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563312203] [2020-08-19 01:09:20,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:20,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:09:20,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605198671] [2020-08-19 01:09:20,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:09:20,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:20,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:09:20,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:09:20,904 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-08-19 01:09:22,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,050 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-08-19 01:09:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:09:22,051 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-08-19 01:09:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,054 INFO L225 Difference]: With dead ends: 252 [2020-08-19 01:09:22,055 INFO L226 Difference]: Without dead ends: 211 [2020-08-19 01:09:22,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:09:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-08-19 01:09:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-08-19 01:09:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-19 01:09:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-19 01:09:22,075 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-08-19 01:09:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,076 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-19 01:09:22,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:09:22,076 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-19 01:09:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 01:09:22,077 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,078 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] [2020-08-19 01:09:22,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:09:22,078 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-08-19 01:09:22,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686751108] [2020-08-19 01:09:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:09:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686751108] [2020-08-19 01:09:22,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 01:09:22,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158814634] [2020-08-19 01:09:22,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 01:09:22,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 01:09:22,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:09:22,353 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-08-19 01:09:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,085 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-08-19 01:09:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:09:24,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-19 01:09:24,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,088 INFO L225 Difference]: With dead ends: 227 [2020-08-19 01:09:24,088 INFO L226 Difference]: Without dead ends: 206 [2020-08-19 01:09:24,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:09:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-19 01:09:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-19 01:09:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 01:09:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-08-19 01:09:24,118 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-08-19 01:09:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,119 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-08-19 01:09:24,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 01:09:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-08-19 01:09:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:09:24,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,121 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] [2020-08-19 01:09:24,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:09:24,122 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-08-19 01:09:24,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168709557] [2020-08-19 01:09:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:09:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168709557] [2020-08-19 01:09:24,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:09:24,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99388810] [2020-08-19 01:09:24,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:09:24,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:09:24,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:09:24,398 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 11 states. [2020-08-19 01:09:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,241 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2020-08-19 01:09:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:09:25,242 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-19 01:09:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,244 INFO L225 Difference]: With dead ends: 296 [2020-08-19 01:09:25,245 INFO L226 Difference]: Without dead ends: 224 [2020-08-19 01:09:25,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:09:25,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-19 01:09:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2020-08-19 01:09:25,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-19 01:09:25,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-08-19 01:09:25,264 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 57 [2020-08-19 01:09:25,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,264 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-08-19 01:09:25,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:09:25,264 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-08-19 01:09:25,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:09:25,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,266 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] [2020-08-19 01:09:25,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:09:25,266 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,267 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-08-19 01:09:25,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317515968] [2020-08-19 01:09:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:09:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317515968] [2020-08-19 01:09:25,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:09:25,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087167405] [2020-08-19 01:09:25,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:09:25,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:09:25,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:09:25,514 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 11 states. [2020-08-19 01:09:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:26,515 INFO L93 Difference]: Finished difference Result 232 states and 299 transitions. [2020-08-19 01:09:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:09:26,515 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-19 01:09:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:26,517 INFO L225 Difference]: With dead ends: 232 [2020-08-19 01:09:26,518 INFO L226 Difference]: Without dead ends: 225 [2020-08-19 01:09:26,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:09:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-19 01:09:26,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2020-08-19 01:09:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-19 01:09:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-08-19 01:09:26,535 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 57 [2020-08-19 01:09:26,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:26,535 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-08-19 01:09:26,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:09:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-08-19 01:09:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:09:26,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:26,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:26,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:09:26,537 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:26,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:26,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-08-19 01:09:26,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:26,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865216318] [2020-08-19 01:09:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:09:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:09:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:09:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:26,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865216318] [2020-08-19 01:09:26,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:26,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:09:26,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330421081] [2020-08-19 01:09:26,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:09:26,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:26,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:09:26,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:09:26,728 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-08-19 01:09:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:27,407 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-08-19 01:09:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:09:27,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-08-19 01:09:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:27,409 INFO L225 Difference]: With dead ends: 258 [2020-08-19 01:09:27,409 INFO L226 Difference]: Without dead ends: 214 [2020-08-19 01:09:27,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:09:27,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-19 01:09:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-19 01:09:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-19 01:09:27,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 274 transitions. [2020-08-19 01:09:27,429 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 274 transitions. Word has length 60 [2020-08-19 01:09:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:27,429 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 274 transitions. [2020-08-19 01:09:27,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:09:27,430 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 274 transitions. [2020-08-19 01:09:27,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:09:27,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:27,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:27,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 01:09:27,432 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:27,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:27,433 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-08-19 01:09:27,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:27,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103620899] [2020-08-19 01:09:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:09:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:09:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:27,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103620899] [2020-08-19 01:09:27,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:27,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 01:09:27,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236341896] [2020-08-19 01:09:27,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:09:27,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:27,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:09:27,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:09:27,728 INFO L87 Difference]: Start difference. First operand 214 states and 274 transitions. Second operand 15 states. [2020-08-19 01:09:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:29,007 INFO L93 Difference]: Finished difference Result 226 states and 286 transitions. [2020-08-19 01:09:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:09:29,008 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-08-19 01:09:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:29,009 INFO L225 Difference]: With dead ends: 226 [2020-08-19 01:09:29,009 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 01:09:29,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:09:29,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 01:09:29,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-08-19 01:09:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-19 01:09:29,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2020-08-19 01:09:29,027 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 61 [2020-08-19 01:09:29,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:29,028 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2020-08-19 01:09:29,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:09:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2020-08-19 01:09:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 01:09:29,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:29,030 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] [2020-08-19 01:09:29,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 01:09:29,031 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:29,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-08-19 01:09:29,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:29,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395095678] [2020-08-19 01:09:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:09:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 01:09:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 01:09:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:29,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395095678] [2020-08-19 01:09:29,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:29,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 01:09:29,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169922452] [2020-08-19 01:09:29,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:09:29,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:29,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:09:29,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:09:29,308 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand 15 states. [2020-08-19 01:09:30,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:30,210 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2020-08-19 01:09:30,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:09:30,211 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-19 01:09:30,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:30,212 INFO L225 Difference]: With dead ends: 200 [2020-08-19 01:09:30,213 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 01:09:30,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:09:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 01:09:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-19 01:09:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-19 01:09:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2020-08-19 01:09:30,239 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 56 [2020-08-19 01:09:30,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:30,239 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2020-08-19 01:09:30,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:09:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2020-08-19 01:09:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 01:09:30,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:30,241 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] [2020-08-19 01:09:30,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 01:09:30,242 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:30,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:30,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-08-19 01:09:30,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:30,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942583469] [2020-08-19 01:09:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:09:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:09:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:30,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942583469] [2020-08-19 01:09:30,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:30,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 01:09:30,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598856565] [2020-08-19 01:09:30,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:09:30,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:09:30,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:09:30,546 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 13 states. [2020-08-19 01:09:31,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:31,903 INFO L93 Difference]: Finished difference Result 237 states and 286 transitions. [2020-08-19 01:09:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:09:31,909 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-08-19 01:09:31,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:31,911 INFO L225 Difference]: With dead ends: 237 [2020-08-19 01:09:31,911 INFO L226 Difference]: Without dead ends: 220 [2020-08-19 01:09:31,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:09:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-19 01:09:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-08-19 01:09:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-19 01:09:31,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-08-19 01:09:31,927 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2020-08-19 01:09:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:31,928 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-08-19 01:09:31,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:09:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-08-19 01:09:31,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 01:09:31,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:31,929 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] [2020-08-19 01:09:31,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 01:09:31,930 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:31,930 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-08-19 01:09:31,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:31,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698264974] [2020-08-19 01:09:31,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 01:09:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:09:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:32,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698264974] [2020-08-19 01:09:32,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:32,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 01:09:32,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494628532] [2020-08-19 01:09:32,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 01:09:32,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:32,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 01:09:32,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:09:32,207 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 14 states. [2020-08-19 01:09:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:33,155 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2020-08-19 01:09:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:09:33,155 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-08-19 01:09:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:33,158 INFO L225 Difference]: With dead ends: 206 [2020-08-19 01:09:33,158 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 01:09:33,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:09:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 01:09:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-08-19 01:09:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 01:09:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2020-08-19 01:09:33,197 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 55 [2020-08-19 01:09:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:33,197 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2020-08-19 01:09:33,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 01:09:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2020-08-19 01:09:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 01:09:33,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:33,198 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] [2020-08-19 01:09:33,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 01:09:33,199 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:33,199 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-08-19 01:09:33,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:33,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984764645] [2020-08-19 01:09:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:09:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:09:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 01:09:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:33,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984764645] [2020-08-19 01:09:33,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:33,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 01:09:33,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578538339] [2020-08-19 01:09:33,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:09:33,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:33,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:09:33,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:09:33,545 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand 10 states. [2020-08-19 01:09:33,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:33,915 INFO L93 Difference]: Finished difference Result 204 states and 235 transitions. [2020-08-19 01:09:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:09:33,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-08-19 01:09:33,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:33,917 INFO L225 Difference]: With dead ends: 204 [2020-08-19 01:09:33,918 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 01:09:33,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:09:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 01:09:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-19 01:09:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-19 01:09:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2020-08-19 01:09:33,933 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 58 [2020-08-19 01:09:33,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:33,933 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2020-08-19 01:09:33,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:09:33,933 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2020-08-19 01:09:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 01:09:33,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:33,934 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] [2020-08-19 01:09:33,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 01:09:33,935 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:33,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:33,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-08-19 01:09:33,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:33,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431963244] [2020-08-19 01:09:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:09:33,958 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:09:33,958 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:09:33,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 01:09:33,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:09:33 BoogieIcfgContainer [2020-08-19 01:09:33,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:09:33,995 INFO L168 Benchmark]: Toolchain (without parser) took 29304.54 ms. Allocated memory was 142.1 MB in the beginning and 584.6 MB in the end (delta: 442.5 MB). Free memory was 99.5 MB in the beginning and 418.0 MB in the end (delta: -318.5 MB). Peak memory consumption was 124.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:33,996 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:09:33,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.09 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 99.2 MB in the beginning and 172.9 MB in the end (delta: -73.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:33,997 INFO L168 Benchmark]: Boogie Preprocessor took 104.98 ms. Allocated memory is still 200.3 MB. Free memory was 172.9 MB in the beginning and 170.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:33,998 INFO L168 Benchmark]: RCFGBuilder took 978.50 ms. Allocated memory is still 200.3 MB. Free memory was 170.0 MB in the beginning and 98.2 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:33,998 INFO L168 Benchmark]: TraceAbstraction took 27460.33 ms. Allocated memory was 200.3 MB in the beginning and 584.6 MB in the end (delta: 384.3 MB). Free memory was 97.5 MB in the beginning and 418.0 MB in the end (delta: -320.5 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:34,001 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 118.4 MB in the beginning and 118.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 754.09 ms. Allocated memory was 142.1 MB in the beginning and 200.3 MB in the end (delta: 58.2 MB). Free memory was 99.2 MB in the beginning and 172.9 MB in the end (delta: -73.7 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.98 ms. Allocated memory is still 200.3 MB. Free memory was 172.9 MB in the beginning and 170.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 978.50 ms. Allocated memory is still 200.3 MB. Free memory was 170.0 MB in the beginning and 98.2 MB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27460.33 ms. Allocated memory was 200.3 MB in the beginning and 584.6 MB in the end (delta: 384.3 MB). Free memory was 97.5 MB in the beginning and 418.0 MB in the end (delta: -320.5 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [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 [L324] CALL _BLAST_init() [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 [L324] RET _BLAST_init() [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 [L335] COND FALSE !(irp_choice == 0) [L340] CALL stub_driver_init() [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 [L340] RET stub_driver_init() [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 [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) [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 [L104] COND FALSE !(irpStack__MinorFunction == 0) [L107] COND FALSE !(irpStack__MinorFunction == 23) [L110] COND TRUE irpStack__MinorFunction == 2 [L234] devExt__Removed = 1 [L235] COND TRUE s == NP [L236] s = SKIP1 [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; [L487] COND FALSE !(\read(compRegistered)) [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 [L516] returnVal2 = -1073741823 [L526] COND FALSE !(s == NP) [L530] COND FALSE !(s == MPR1) [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 [L549] return (returnVal2); [L245] RET IofCallDriver(devExt__TopOfStack, Irp) [L246] status = 0 [L288] return (status); [L386] RET, EXPR KbFilter_PnP(devobj, pirp) [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) [L418] COND FALSE !(pended == 1) [L426] COND TRUE s != UNLOADED [L427] COND TRUE status != -1 [L428] COND FALSE !(s != SKIP2) [L438] COND FALSE !(pended == 1) [L445] COND FALSE !(s == DC) [L450] COND TRUE status != lowerDriverReturn [L451] CALL errorFn() [L1011] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.3s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 21.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4635 SDtfs, 6121 SDslu, 7832 SDs, 0 SdLazy, 16043 SolverSat, 1269 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 275 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 1029 NumberOfCodeBlocks, 1029 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 953 ConstructedInterpolants, 0 QuantifiedInterpolants, 212124 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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...