/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -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 05:11:50,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:11:50,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:11:50,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:11:50,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:11:50,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:11:50,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:11:50,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:11:50,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:11:50,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:11:50,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:11:50,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:11:50,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:11:50,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:11:50,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:11:50,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:11:50,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:11:50,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:11:50,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:11:50,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:11:50,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:11:50,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:11:50,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:11:50,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:11:50,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:11:50,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:11:50,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:11:50,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:11:50,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:11:50,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:11:50,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:11:50,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:11:50,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:11:50,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:11:50,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:11:50,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:11:50,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:11:50,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:11:50,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:11:50,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:11:50,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:11:50,610 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 05:11:50,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:11:50,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:11:50,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:11:50,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:11:50,651 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:11:50,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:11:50,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:11:50,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:11:50,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:11:50,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:11:50,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:11:50,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:11:50,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:11:50,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:11:50,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:11:50,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:11:50,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:11:50,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:11:50,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:11:50,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:11:50,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:11:50,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:11:50,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:11:50,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:11:50,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:11:50,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:11:50,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:11:50,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:11:50,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:11:50,655 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=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:11:50,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:11:50,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:11:50,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:11:50,968 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:11:50,968 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:11:50,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-19 05:11:51,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec15d593/7686a3307f89429182fbec9f2a4378a5/FLAGdeae908c0 [2020-08-19 05:11:51,577 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:11:51,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-19 05:11:51,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec15d593/7686a3307f89429182fbec9f2a4378a5/FLAGdeae908c0 [2020-08-19 05:11:51,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dec15d593/7686a3307f89429182fbec9f2a4378a5 [2020-08-19 05:11:51,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:11:51,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:11:51,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:11:51,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:11:51,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:11:51,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:11:51" (1/1) ... [2020-08-19 05:11:51,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f546c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:51, skipping insertion in model container [2020-08-19 05:11:51,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:11:51" (1/1) ... [2020-08-19 05:11:51,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:11:51,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:11:52,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:11:52,290 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:11:52,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:11:52,605 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:11:52,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52 WrapperNode [2020-08-19 05:11:52,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:11:52,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:11:52,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:11:52,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:11:52,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (1/1) ... [2020-08-19 05:11:52,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (1/1) ... [2020-08-19 05:11:52,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (1/1) ... [2020-08-19 05:11:52,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (1/1) ... [2020-08-19 05:11:52,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (1/1) ... [2020-08-19 05:11:52,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (1/1) ... [2020-08-19 05:11:52,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (1/1) ... [2020-08-19 05:11:52,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:11:52,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:11:52,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:11:52,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:11:52,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (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 05:11:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:11:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:11:52,795 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-19 05:11:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-19 05:11:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-19 05:11:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:11:52,796 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-19 05:11:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-19 05:11:52,797 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-19 05:11:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-19 05:11:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-19 05:11:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-19 05:11:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-19 05:11:52,798 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-19 05:11:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-19 05:11:52,799 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-19 05:11:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-19 05:11:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-19 05:11:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:11:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 05:11:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:11:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 05:11:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-19 05:11:52,801 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-19 05:11:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-19 05:11:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-19 05:11:52,802 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-19 05:11:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-19 05:11:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-19 05:11:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-19 05:11:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-19 05:11:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-19 05:11:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-19 05:11:52,803 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-19 05:11:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-19 05:11:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-19 05:11:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:11:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-19 05:11:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:11:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:11:53,139 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 05:11:53,199 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-19 05:11:53,200 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-19 05:11:53,222 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 05:11:53,359 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-19 05:11:53,360 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-19 05:11:53,362 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 05:11:53,407 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-19 05:11:53,407 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-19 05:11:53,414 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 05:11:53,463 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-19 05:11:53,463 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-19 05:11:53,650 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 05:11:53,708 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-19 05:11:53,708 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-19 05:11:53,772 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 05:11:53,908 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-19 05:11:53,908 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-19 05:11:53,928 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:11:53,928 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 05:11:53,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:11:53 BoogieIcfgContainer [2020-08-19 05:11:53,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:11:53,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:11:53,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:11:53,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:11:53,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:11:51" (1/3) ... [2020-08-19 05:11:53,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a43fa9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:11:53, skipping insertion in model container [2020-08-19 05:11:53,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:11:52" (2/3) ... [2020-08-19 05:11:53,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a43fa9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:11:53, skipping insertion in model container [2020-08-19 05:11:53,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:11:53" (3/3) ... [2020-08-19 05:11:53,945 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-19 05:11:53,956 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:11:53,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:11:53,980 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:11:54,007 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:11:54,007 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:11:54,007 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:11:54,008 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:11:54,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:11:54,008 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:11:54,009 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:11:54,009 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:11:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-08-19 05:11:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 05:11:54,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:54,049 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 05:11:54,050 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:54,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:54,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-08-19 05:11:54,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:54,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676177206] [2020-08-19 05:11:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:54,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:54,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:11:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:54,523 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 05:11:54,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676177206] [2020-08-19 05:11:54,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:11:54,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:11:54,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895881391] [2020-08-19 05:11:54,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:11:54,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:54,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:11:54,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:11:54,550 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-08-19 05:11:55,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:55,629 INFO L93 Difference]: Finished difference Result 418 states and 629 transitions. [2020-08-19 05:11:55,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:11:55,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-19 05:11:55,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:55,647 INFO L225 Difference]: With dead ends: 418 [2020-08-19 05:11:55,648 INFO L226 Difference]: Without dead ends: 259 [2020-08-19 05:11:55,655 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 05:11:55,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-19 05:11:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2020-08-19 05:11:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-19 05:11:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-08-19 05:11:55,735 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-08-19 05:11:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:55,736 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-08-19 05:11:55,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:11:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-08-19 05:11:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:11:55,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:55,738 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 05:11:55,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:11:55,738 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:55,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:55,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-08-19 05:11:55,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:55,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804217132] [2020-08-19 05:11:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:55,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:55,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:11:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:56,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:11:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:56,034 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 05:11:56,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804217132] [2020-08-19 05:11:56,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:11:56,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:11:56,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904723775] [2020-08-19 05:11:56,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:11:56,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:56,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:11:56,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:11:56,038 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 6 states. [2020-08-19 05:11:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:57,275 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2020-08-19 05:11:57,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:11:57,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 05:11:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:57,282 INFO L225 Difference]: With dead ends: 410 [2020-08-19 05:11:57,282 INFO L226 Difference]: Without dead ends: 349 [2020-08-19 05:11:57,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 05:11:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-19 05:11:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2020-08-19 05:11:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 05:11:57,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2020-08-19 05:11:57,339 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2020-08-19 05:11:57,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:57,339 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2020-08-19 05:11:57,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:11:57,340 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2020-08-19 05:11:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:11:57,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:57,341 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 05:11:57,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:11:57,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:57,342 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-08-19 05:11:57,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:57,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029445570] [2020-08-19 05:11:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:57,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:57,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:11:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:11:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:57,534 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 05:11:57,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029445570] [2020-08-19 05:11:57,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:11:57,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:11:57,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971910978] [2020-08-19 05:11:57,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:11:57,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:57,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:11:57,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:11:57,537 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand 6 states. [2020-08-19 05:11:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:58,406 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2020-08-19 05:11:58,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:11:58,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 05:11:58,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:58,412 INFO L225 Difference]: With dead ends: 487 [2020-08-19 05:11:58,412 INFO L226 Difference]: Without dead ends: 368 [2020-08-19 05:11:58,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 05:11:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-08-19 05:11:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2020-08-19 05:11:58,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-19 05:11:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2020-08-19 05:11:58,475 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2020-08-19 05:11:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:58,475 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2020-08-19 05:11:58,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:11:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2020-08-19 05:11:58,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-19 05:11:58,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:58,479 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 05:11:58,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:11:58,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:58,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:58,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-08-19 05:11:58,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:58,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500106091] [2020-08-19 05:11:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:58,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:58,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:11:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:11:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:58,660 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 05:11:58,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500106091] [2020-08-19 05:11:58,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:11:58,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:11:58,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238262616] [2020-08-19 05:11:58,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:11:58,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:58,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:11:58,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:11:58,663 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand 6 states. [2020-08-19 05:11:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:11:59,489 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2020-08-19 05:11:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:11:59,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-19 05:11:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:11:59,495 INFO L225 Difference]: With dead ends: 347 [2020-08-19 05:11:59,495 INFO L226 Difference]: Without dead ends: 343 [2020-08-19 05:11:59,496 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 05:11:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-19 05:11:59,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-08-19 05:11:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-19 05:11:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2020-08-19 05:11:59,526 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2020-08-19 05:11:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:11:59,527 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2020-08-19 05:11:59,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:11:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2020-08-19 05:11:59,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 05:11:59,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:11:59,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:11:59,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:11:59,532 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:11:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:11:59,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-08-19 05:11:59,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:11:59,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260230398] [2020-08-19 05:11:59,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:11:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:11:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:11:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:59,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:11:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:59,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 05:11:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:11:59,760 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 05:11:59,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260230398] [2020-08-19 05:11:59,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:11:59,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:11:59,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976768356] [2020-08-19 05:11:59,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:11:59,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:11:59,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:11:59,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:11:59,763 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand 8 states. [2020-08-19 05:12:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:00,883 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2020-08-19 05:12:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:12:00,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-19 05:12:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:00,887 INFO L225 Difference]: With dead ends: 394 [2020-08-19 05:12:00,888 INFO L226 Difference]: Without dead ends: 325 [2020-08-19 05:12:00,889 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 05:12:00,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-19 05:12:00,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2020-08-19 05:12:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 05:12:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2020-08-19 05:12:00,913 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2020-08-19 05:12:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:00,914 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2020-08-19 05:12:00,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:12:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2020-08-19 05:12:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-19 05:12:00,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:00,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:12:00,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:12:00,917 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:00,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:00,918 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-08-19 05:12:00,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:00,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279745422] [2020-08-19 05:12:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:12:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 05:12:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,131 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 05:12:01,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279745422] [2020-08-19 05:12:01,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:01,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:12:01,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883617055] [2020-08-19 05:12:01,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:12:01,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:01,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:12:01,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:12:01,136 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand 8 states. [2020-08-19 05:12:01,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:01,588 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2020-08-19 05:12:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:12:01,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-19 05:12:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:01,592 INFO L225 Difference]: With dead ends: 316 [2020-08-19 05:12:01,592 INFO L226 Difference]: Without dead ends: 300 [2020-08-19 05:12:01,593 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 05:12:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-19 05:12:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2020-08-19 05:12:01,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-19 05:12:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-08-19 05:12:01,621 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 45 [2020-08-19 05:12:01,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:01,622 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-08-19 05:12:01,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:12:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-08-19 05:12:01,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 05:12:01,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:01,624 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 05:12:01,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:12:01,625 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:01,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:01,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-08-19 05:12:01,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:01,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055292293] [2020-08-19 05:12:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:12:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 05:12:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:01,895 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 05:12:01,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055292293] [2020-08-19 05:12:01,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:01,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:12:01,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302630640] [2020-08-19 05:12:01,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:12:01,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:01,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:12:01,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:12:01,898 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-08-19 05:12:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:02,776 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-08-19 05:12:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:12:02,776 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-19 05:12:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:02,780 INFO L225 Difference]: With dead ends: 290 [2020-08-19 05:12:02,780 INFO L226 Difference]: Without dead ends: 242 [2020-08-19 05:12:02,785 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 05:12:02,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-19 05:12:02,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-19 05:12:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 05:12:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-08-19 05:12:02,810 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-08-19 05:12:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:02,812 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-08-19 05:12:02,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:12:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-08-19 05:12:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:12:02,818 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:02,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:12:02,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:12:02,819 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:02,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:02,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-08-19 05:12:02,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:02,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503657600] [2020-08-19 05:12:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:02,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:12:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:12:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,046 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 05:12:03,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503657600] [2020-08-19 05:12:03,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:03,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:12:03,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033967239] [2020-08-19 05:12:03,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:12:03,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:03,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:12:03,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:12:03,050 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-08-19 05:12:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:03,768 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-08-19 05:12:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:12:03,768 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-19 05:12:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:03,773 INFO L225 Difference]: With dead ends: 270 [2020-08-19 05:12:03,773 INFO L226 Difference]: Without dead ends: 240 [2020-08-19 05:12:03,775 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 05:12:03,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-19 05:12:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-08-19 05:12:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 05:12:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-08-19 05:12:03,797 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-08-19 05:12:03,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:03,798 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-08-19 05:12:03,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:12:03,798 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-08-19 05:12:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:12:03,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:03,800 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, 1, 1, 1, 1, 1, 1] [2020-08-19 05:12:03,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:12:03,800 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:03,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-08-19 05:12:03,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:03,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587030587] [2020-08-19 05:12:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 05:12:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:04,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:04,033 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 05:12:04,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587030587] [2020-08-19 05:12:04,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:04,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:12:04,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420417637] [2020-08-19 05:12:04,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:12:04,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:04,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:12:04,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:12:04,043 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 9 states. [2020-08-19 05:12:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:05,412 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-08-19 05:12:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:12:05,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-19 05:12:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:05,416 INFO L225 Difference]: With dead ends: 313 [2020-08-19 05:12:05,416 INFO L226 Difference]: Without dead ends: 307 [2020-08-19 05:12:05,416 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 05:12:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-19 05:12:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-08-19 05:12:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-19 05:12:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-08-19 05:12:05,439 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-08-19 05:12:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:05,439 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-08-19 05:12:05,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:12:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-08-19 05:12:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:12:05,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:05,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:05,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:12:05,442 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-08-19 05:12:05,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:05,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133765178] [2020-08-19 05:12:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 05:12:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:05,715 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 05:12:05,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133765178] [2020-08-19 05:12:05,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:05,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 05:12:05,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184861262] [2020-08-19 05:12:05,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:12:05,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:05,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:12:05,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:12:05,718 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 13 states. [2020-08-19 05:12:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:07,834 INFO L93 Difference]: Finished difference Result 325 states and 410 transitions. [2020-08-19 05:12:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 05:12:07,835 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-08-19 05:12:07,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:07,838 INFO L225 Difference]: With dead ends: 325 [2020-08-19 05:12:07,838 INFO L226 Difference]: Without dead ends: 284 [2020-08-19 05:12:07,839 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 05:12:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-19 05:12:07,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2020-08-19 05:12:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 05:12:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-08-19 05:12:07,873 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-08-19 05:12:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:07,873 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-08-19 05:12:07,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:12:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-08-19 05:12:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:12:07,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:07,876 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 05:12:07,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:12:07,876 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:07,877 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-08-19 05:12:07,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:07,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862771900] [2020-08-19 05:12:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:08,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:08,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 05:12:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:08,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:08,198 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 05:12:08,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862771900] [2020-08-19 05:12:08,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:08,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:12:08,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48628848] [2020-08-19 05:12:08,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:12:08,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:08,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:12:08,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:12:08,201 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-08-19 05:12:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:09,434 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-08-19 05:12:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:12:09,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-08-19 05:12:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:09,437 INFO L225 Difference]: With dead ends: 252 [2020-08-19 05:12:09,438 INFO L226 Difference]: Without dead ends: 211 [2020-08-19 05:12:09,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:12:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-08-19 05:12:09,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-08-19 05:12:09,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-19 05:12:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-19 05:12:09,455 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-08-19 05:12:09,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:09,456 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-19 05:12:09,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:12:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-19 05:12:09,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 05:12:09,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:09,457 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 05:12:09,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:12:09,458 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:09,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-08-19 05:12:09,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:09,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052826572] [2020-08-19 05:12:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:09,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:09,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:09,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 05:12:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:09,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:09,703 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 05:12:09,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052826572] [2020-08-19 05:12:09,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:09,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 05:12:09,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217298063] [2020-08-19 05:12:09,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:12:09,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:09,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:12:09,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:12:09,706 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-08-19 05:12:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:10,937 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-08-19 05:12:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:12:10,938 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-19 05:12:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:10,940 INFO L225 Difference]: With dead ends: 227 [2020-08-19 05:12:10,940 INFO L226 Difference]: Without dead ends: 206 [2020-08-19 05:12:10,941 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 05:12:10,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-19 05:12:10,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-19 05:12:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 05:12:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-08-19 05:12:10,958 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-08-19 05:12:10,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:10,958 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-08-19 05:12:10,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:12:10,959 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-08-19 05:12:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 05:12:10,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:10,960 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 05:12:10,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:12:10,960 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-08-19 05:12:10,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:10,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724696588] [2020-08-19 05:12:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:11,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 05:12:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:11,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:11,182 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 05:12:11,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724696588] [2020-08-19 05:12:11,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:11,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 05:12:11,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22033642] [2020-08-19 05:12:11,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:12:11,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:11,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:12:11,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:12:11,185 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 11 states. [2020-08-19 05:12:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:11,980 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2020-08-19 05:12:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:12:11,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-19 05:12:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:11,983 INFO L225 Difference]: With dead ends: 296 [2020-08-19 05:12:11,983 INFO L226 Difference]: Without dead ends: 224 [2020-08-19 05:12:11,984 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 05:12:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-19 05:12:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2020-08-19 05:12:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-19 05:12:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-08-19 05:12:12,025 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 57 [2020-08-19 05:12:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:12,026 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-08-19 05:12:12,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:12:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-08-19 05:12:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 05:12:12,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:12,028 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 05:12:12,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 05:12:12,028 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:12,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:12,029 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-08-19 05:12:12,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:12,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617633278] [2020-08-19 05:12:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:12,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:12,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 05:12:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:12,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:12,266 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 05:12:12,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617633278] [2020-08-19 05:12:12,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:12,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 05:12:12,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426004815] [2020-08-19 05:12:12,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:12:12,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:12:12,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:12:12,269 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 11 states. [2020-08-19 05:12:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:13,484 INFO L93 Difference]: Finished difference Result 232 states and 299 transitions. [2020-08-19 05:12:13,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:12:13,485 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-19 05:12:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:13,487 INFO L225 Difference]: With dead ends: 232 [2020-08-19 05:12:13,487 INFO L226 Difference]: Without dead ends: 225 [2020-08-19 05:12:13,488 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 05:12:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-19 05:12:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2020-08-19 05:12:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-19 05:12:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-08-19 05:12:13,512 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 57 [2020-08-19 05:12:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:13,513 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-08-19 05:12:13,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:12:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-08-19 05:12:13,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 05:12:13,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:13,516 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 05:12:13,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 05:12:13,516 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:13,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-08-19 05:12:13,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:13,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531627210] [2020-08-19 05:12:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:13,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:13,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:12:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:13,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 05:12:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:13,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:12:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:13,716 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 05:12:13,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531627210] [2020-08-19 05:12:13,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:13,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:12:13,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629177272] [2020-08-19 05:12:13,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:12:13,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:13,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:12:13,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:12:13,720 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-08-19 05:12:14,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:14,383 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-08-19 05:12:14,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:12:14,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-08-19 05:12:14,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:14,385 INFO L225 Difference]: With dead ends: 258 [2020-08-19 05:12:14,385 INFO L226 Difference]: Without dead ends: 214 [2020-08-19 05:12:14,386 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 05:12:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-19 05:12:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-19 05:12:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-19 05:12:14,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 274 transitions. [2020-08-19 05:12:14,412 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 274 transitions. Word has length 60 [2020-08-19 05:12:14,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:14,412 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 274 transitions. [2020-08-19 05:12:14,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:12:14,413 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 274 transitions. [2020-08-19 05:12:14,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 05:12:14,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:14,418 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 05:12:14,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 05:12:14,418 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:14,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:14,419 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-08-19 05:12:14,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:14,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069611061] [2020-08-19 05:12:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:12:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:12:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,729 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 05:12:14,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069611061] [2020-08-19 05:12:14,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:14,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 05:12:14,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387837309] [2020-08-19 05:12:14,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:12:14,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:14,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:12:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:12:14,734 INFO L87 Difference]: Start difference. First operand 214 states and 274 transitions. Second operand 15 states. [2020-08-19 05:12:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:16,176 INFO L93 Difference]: Finished difference Result 226 states and 286 transitions. [2020-08-19 05:12:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:12:16,177 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-08-19 05:12:16,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:16,178 INFO L225 Difference]: With dead ends: 226 [2020-08-19 05:12:16,178 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 05:12:16,179 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 05:12:16,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 05:12:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-08-19 05:12:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-19 05:12:16,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2020-08-19 05:12:16,202 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 61 [2020-08-19 05:12:16,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:16,203 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2020-08-19 05:12:16,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:12:16,203 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2020-08-19 05:12:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 05:12:16,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:16,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:12:16,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 05:12:16,206 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:16,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-08-19 05:12:16,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:16,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898855959] [2020-08-19 05:12:16,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:12:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 05:12:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 05:12:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,528 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 05:12:16,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898855959] [2020-08-19 05:12:16,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:16,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 05:12:16,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269008679] [2020-08-19 05:12:16,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:12:16,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:16,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:12:16,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:12:16,532 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand 15 states. [2020-08-19 05:12:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:17,465 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2020-08-19 05:12:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:12:17,465 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-19 05:12:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:17,468 INFO L225 Difference]: With dead ends: 200 [2020-08-19 05:12:17,468 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 05:12:17,468 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 05:12:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 05:12:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-19 05:12:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-19 05:12:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2020-08-19 05:12:17,490 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 56 [2020-08-19 05:12:17,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:17,491 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2020-08-19 05:12:17,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:12:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2020-08-19 05:12:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 05:12:17,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:17,493 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 05:12:17,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 05:12:17,493 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:17,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:17,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-08-19 05:12:17,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:17,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370083815] [2020-08-19 05:12:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 05:12:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:12:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,767 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 05:12:17,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370083815] [2020-08-19 05:12:17,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:17,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 05:12:17,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528254847] [2020-08-19 05:12:17,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:12:17,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:17,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:12:17,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:12:17,772 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 13 states. [2020-08-19 05:12:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:19,017 INFO L93 Difference]: Finished difference Result 237 states and 286 transitions. [2020-08-19 05:12:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:12:19,018 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-08-19 05:12:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:19,020 INFO L225 Difference]: With dead ends: 237 [2020-08-19 05:12:19,021 INFO L226 Difference]: Without dead ends: 220 [2020-08-19 05:12:19,022 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 05:12:19,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-19 05:12:19,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-08-19 05:12:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-19 05:12:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-08-19 05:12:19,038 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2020-08-19 05:12:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:19,038 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-08-19 05:12:19,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:12:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-08-19 05:12:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 05:12:19,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:19,040 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 05:12:19,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 05:12:19,040 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:19,041 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-08-19 05:12:19,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:19,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695187560] [2020-08-19 05:12:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:19,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:19,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 05:12:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:19,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:12:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:19,302 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 05:12:19,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695187560] [2020-08-19 05:12:19,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:19,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 05:12:19,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079955019] [2020-08-19 05:12:19,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:12:19,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:19,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:12:19,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:12:19,305 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 14 states. [2020-08-19 05:12:20,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:20,210 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2020-08-19 05:12:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:12:20,211 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-08-19 05:12:20,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:20,212 INFO L225 Difference]: With dead ends: 206 [2020-08-19 05:12:20,212 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 05:12:20,213 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 05:12:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 05:12:20,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-08-19 05:12:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 05:12:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2020-08-19 05:12:20,230 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 55 [2020-08-19 05:12:20,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:20,231 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2020-08-19 05:12:20,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:12:20,231 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2020-08-19 05:12:20,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 05:12:20,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:20,232 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 05:12:20,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 05:12:20,232 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:20,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:20,233 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-08-19 05:12:20,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:20,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295916114] [2020-08-19 05:12:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:20,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:20,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:12:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:12:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 05:12:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:20,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:20,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:20,462 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 05:12:20,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295916114] [2020-08-19 05:12:20,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:20,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 05:12:20,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367207009] [2020-08-19 05:12:20,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:12:20,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:20,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:12:20,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:12:20,465 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand 10 states. [2020-08-19 05:12:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:20,811 INFO L93 Difference]: Finished difference Result 204 states and 235 transitions. [2020-08-19 05:12:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:12:20,811 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-08-19 05:12:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:20,813 INFO L225 Difference]: With dead ends: 204 [2020-08-19 05:12:20,813 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 05:12:20,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:12:20,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 05:12:20,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-19 05:12:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-19 05:12:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2020-08-19 05:12:20,828 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 58 [2020-08-19 05:12:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:20,829 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2020-08-19 05:12:20,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:12:20,829 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2020-08-19 05:12:20,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 05:12:20,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:20,830 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 05:12:20,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 05:12:20,830 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:20,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-08-19 05:12:20,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:20,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723461879] [2020-08-19 05:12:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:12:20,852 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:12:20,852 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:12:20,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 05:12:20,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:12:20 BoogieIcfgContainer [2020-08-19 05:12:20,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:12:20,888 INFO L168 Benchmark]: Toolchain (without parser) took 29002.87 ms. Allocated memory was 141.0 MB in the beginning and 462.4 MB in the end (delta: 321.4 MB). Free memory was 103.4 MB in the beginning and 209.5 MB in the end (delta: -106.1 MB). Peak memory consumption was 215.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:12:20,889 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:12:20,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.52 ms. Allocated memory was 141.0 MB in the beginning and 208.7 MB in the end (delta: 67.6 MB). Free memory was 103.2 MB in the beginning and 181.6 MB in the end (delta: -78.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:12:20,890 INFO L168 Benchmark]: Boogie Preprocessor took 110.95 ms. Allocated memory is still 208.7 MB. Free memory was 181.6 MB in the beginning and 178.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:12:20,891 INFO L168 Benchmark]: RCFGBuilder took 1217.17 ms. Allocated memory is still 208.7 MB. Free memory was 178.3 MB in the beginning and 106.8 MB in the end (delta: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:12:20,891 INFO L168 Benchmark]: TraceAbstraction took 26949.74 ms. Allocated memory was 208.7 MB in the beginning and 462.4 MB in the end (delta: 253.8 MB). Free memory was 106.2 MB in the beginning and 209.5 MB in the end (delta: -103.4 MB). Peak memory consumption was 150.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:12:20,894 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 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.52 ms. Allocated memory was 141.0 MB in the beginning and 208.7 MB in the end (delta: 67.6 MB). Free memory was 103.2 MB in the beginning and 181.6 MB in the end (delta: -78.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.95 ms. Allocated memory is still 208.7 MB. Free memory was 181.6 MB in the beginning and 178.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1217.17 ms. Allocated memory is still 208.7 MB. Free memory was 178.3 MB in the beginning and 106.8 MB in the end (delta: 71.4 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26949.74 ms. Allocated memory was 208.7 MB in the beginning and 462.4 MB in the end (delta: 253.8 MB). Free memory was 106.2 MB in the beginning and 209.5 MB in the end (delta: -103.4 MB). Peak memory consumption was 150.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [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: 26.8s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 20.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4629 SDtfs, 6124 SDslu, 7824 SDs, 0 SdLazy, 16024 SolverSat, 1270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 5.2s 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, 0.5s 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...