/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:00:19,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:00:19,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:00:19,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:00:19,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:00:19,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:00:19,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:00:19,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:00:19,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:00:19,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:00:19,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:00:19,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:00:19,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:00:19,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:00:19,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:00:19,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:00:19,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:00:19,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:00:19,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:00:19,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:00:19,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:00:19,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:00:19,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:00:19,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:00:19,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:00:19,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:00:19,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:00:19,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:00:19,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:00:19,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:00:19,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:00:19,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:00:19,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:00:19,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:00:19,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:00:19,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:00:19,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:00:19,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:00:19,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:00:19,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:00:19,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:00:19,938 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 06:00:19,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:00:19,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:00:19,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:00:19,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:00:19,978 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:00:19,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:00:19,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:00:19,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:00:19,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:00:19,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:00:19,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:00:19,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:00:19,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:00:19,980 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:00:19,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:00:19,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:00:19,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:00:19,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:00:19,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:00:19,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:00:19,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:00:19,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:00:19,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:00:19,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:00:19,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:00:19,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:00:19,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:00:19,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:00:19,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:00:19,983 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:00:20,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:00:20,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:00:20,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:00:20,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:00:20,346 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:00:20,348 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-19 06:00:20,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8cea9c7/ed053c8086dc44f5955bdf8a8debc858/FLAGacae2ddb0 [2020-08-19 06:00:20,979 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:00:20,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-19 06:00:21,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8cea9c7/ed053c8086dc44f5955bdf8a8debc858/FLAGacae2ddb0 [2020-08-19 06:00:21,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8cea9c7/ed053c8086dc44f5955bdf8a8debc858 [2020-08-19 06:00:21,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:00:21,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:00:21,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:00:21,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:00:21,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:00:21,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1aada5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21, skipping insertion in model container [2020-08-19 06:00:21,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:00:21,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:00:21,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:00:21,680 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:00:21,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:00:21,904 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:00:21,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21 WrapperNode [2020-08-19 06:00:21,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:00:21,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:00:21,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:00:21,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:00:21,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (1/1) ... [2020-08-19 06:00:21,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:00:21,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:00:21,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:00:21,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:00:21,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (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 06:00:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:00:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:00:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-19 06:00:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-19 06:00:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-19 06:00:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:00:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-19 06:00:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-19 06:00:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-19 06:00:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-19 06:00:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-19 06:00:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-19 06:00:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-19 06:00:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-19 06:00:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-19 06:00:22,051 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-19 06:00:22,052 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-19 06:00:22,052 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-19 06:00:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:00:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 06:00:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:00:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 06:00:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-19 06:00:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-19 06:00:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-19 06:00:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-19 06:00:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-19 06:00:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-19 06:00:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-19 06:00:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-19 06:00:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-19 06:00:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-19 06:00:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-19 06:00:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-19 06:00:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-19 06:00:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-19 06:00:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:00:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-19 06:00:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:00:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:00:22,307 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 06:00:22,378 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-19 06:00:22,378 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-19 06:00:22,408 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 06:00:22,561 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-19 06:00:22,561 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-19 06:00:22,564 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 06:00:22,609 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-19 06:00:22,609 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-19 06:00:22,616 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 06:00:22,655 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-19 06:00:22,655 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-19 06:00:22,742 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 06:00:22,766 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-19 06:00:22,766 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-19 06:00:22,807 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 06:00:22,949 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-19 06:00:22,950 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-19 06:00:22,982 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:00:22,983 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 06:00:22,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:00:22 BoogieIcfgContainer [2020-08-19 06:00:22,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:00:22,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:00:22,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:00:23,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:00:23,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:00:21" (1/3) ... [2020-08-19 06:00:23,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85081ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:00:23, skipping insertion in model container [2020-08-19 06:00:23,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:21" (2/3) ... [2020-08-19 06:00:23,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85081ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:00:23, skipping insertion in model container [2020-08-19 06:00:23,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:00:22" (3/3) ... [2020-08-19 06:00:23,008 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-19 06:00:23,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:00:23,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:00:23,056 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:00:23,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:00:23,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:00:23,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:00:23,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:00:23,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:00:23,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:00:23,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:00:23,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:00:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-08-19 06:00:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 06:00:23,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:23,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:23,140 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:23,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-08-19 06:00:23,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:23,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092450564] [2020-08-19 06:00:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:23,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:23,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:23,575 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 06:00:23,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092450564] [2020-08-19 06:00:23,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:23,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 06:00:23,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432911525] [2020-08-19 06:00:23,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:00:23,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:23,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:00:23,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:00:23,610 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-08-19 06:00:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:24,653 INFO L93 Difference]: Finished difference Result 418 states and 629 transitions. [2020-08-19 06:00:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:00:24,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-19 06:00:24,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:24,674 INFO L225 Difference]: With dead ends: 418 [2020-08-19 06:00:24,674 INFO L226 Difference]: Without dead ends: 259 [2020-08-19 06:00:24,687 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 06:00:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-19 06:00:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2020-08-19 06:00:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-19 06:00:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-08-19 06:00:24,762 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-08-19 06:00:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:24,763 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-08-19 06:00:24,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:00:24,763 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-08-19 06:00:24,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 06:00:24,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:24,765 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 06:00:24,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:00:24,766 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:24,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:24,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-08-19 06:00:24,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:24,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607036168] [2020-08-19 06:00:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:25,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:25,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:25,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:25,106 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 06:00:25,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607036168] [2020-08-19 06:00:25,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:25,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:00:25,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47919789] [2020-08-19 06:00:25,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:00:25,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:25,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:00:25,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:00:25,111 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 6 states. [2020-08-19 06:00:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:26,340 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2020-08-19 06:00:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:00:26,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 06:00:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:26,345 INFO L225 Difference]: With dead ends: 410 [2020-08-19 06:00:26,345 INFO L226 Difference]: Without dead ends: 349 [2020-08-19 06:00:26,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:00:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-19 06:00:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2020-08-19 06:00:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 06:00:26,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2020-08-19 06:00:26,390 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2020-08-19 06:00:26,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:26,391 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2020-08-19 06:00:26,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:00:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2020-08-19 06:00:26,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 06:00:26,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:26,393 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 06:00:26,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:00:26,393 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-08-19 06:00:26,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:26,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673802759] [2020-08-19 06:00:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:26,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:26,568 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 06:00:26,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673802759] [2020-08-19 06:00:26,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:26,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:00:26,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260909491] [2020-08-19 06:00:26,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:00:26,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:26,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:00:26,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:00:26,571 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand 6 states. [2020-08-19 06:00:27,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:27,440 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2020-08-19 06:00:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:00:27,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 06:00:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:27,444 INFO L225 Difference]: With dead ends: 487 [2020-08-19 06:00:27,445 INFO L226 Difference]: Without dead ends: 368 [2020-08-19 06:00:27,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:00:27,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-08-19 06:00:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2020-08-19 06:00:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-19 06:00:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2020-08-19 06:00:27,512 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2020-08-19 06:00:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:27,512 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2020-08-19 06:00:27,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:00:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2020-08-19 06:00:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-19 06:00:27,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:27,516 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] [2020-08-19 06:00:27,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:00:27,516 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:27,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-08-19 06:00:27,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:27,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010677553] [2020-08-19 06:00:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:27,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:27,672 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 06:00:27,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010677553] [2020-08-19 06:00:27,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:27,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:00:27,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357850710] [2020-08-19 06:00:27,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:00:27,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:27,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:00:27,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:00:27,675 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand 6 states. [2020-08-19 06:00:28,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:28,541 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2020-08-19 06:00:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:00:28,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-19 06:00:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:28,546 INFO L225 Difference]: With dead ends: 347 [2020-08-19 06:00:28,546 INFO L226 Difference]: Without dead ends: 343 [2020-08-19 06:00:28,547 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 06:00:28,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-19 06:00:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-08-19 06:00:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-19 06:00:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2020-08-19 06:00:28,573 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2020-08-19 06:00:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:28,574 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2020-08-19 06:00:28,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:00:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2020-08-19 06:00:28,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 06:00:28,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:28,578 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 06:00:28,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:00:28,579 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-08-19 06:00:28,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:28,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289446515] [2020-08-19 06:00:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:28,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:28,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 06:00:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:28,754 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 06:00:28,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289446515] [2020-08-19 06:00:28,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:28,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:00:28,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73145769] [2020-08-19 06:00:28,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:00:28,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:28,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:00:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:00:28,757 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand 8 states. [2020-08-19 06:00:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:29,798 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2020-08-19 06:00:29,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:00:29,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-19 06:00:29,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:29,801 INFO L225 Difference]: With dead ends: 394 [2020-08-19 06:00:29,802 INFO L226 Difference]: Without dead ends: 325 [2020-08-19 06:00:29,804 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 06:00:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-19 06:00:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2020-08-19 06:00:29,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 06:00:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2020-08-19 06:00:29,837 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2020-08-19 06:00:29,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:29,840 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2020-08-19 06:00:29,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:00:29,840 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2020-08-19 06:00:29,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-19 06:00:29,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:29,844 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 06:00:29,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:00:29,845 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:29,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:29,845 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-08-19 06:00:29,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:29,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244017132] [2020-08-19 06:00:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:29,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:00:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 06:00:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,058 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 06:00:30,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244017132] [2020-08-19 06:00:30,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:30,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:00:30,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400600178] [2020-08-19 06:00:30,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:00:30,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:30,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:00:30,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:00:30,061 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand 8 states. [2020-08-19 06:00:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:30,557 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2020-08-19 06:00:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:00:30,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-19 06:00:30,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:30,561 INFO L225 Difference]: With dead ends: 316 [2020-08-19 06:00:30,562 INFO L226 Difference]: Without dead ends: 300 [2020-08-19 06:00:30,564 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 06:00:30,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-19 06:00:30,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2020-08-19 06:00:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-19 06:00:30,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-08-19 06:00:30,605 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 45 [2020-08-19 06:00:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:30,606 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-08-19 06:00:30,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:00:30,606 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-08-19 06:00:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 06:00:30,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:30,609 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 06:00:30,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:00:30,609 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:30,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-08-19 06:00:30,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:30,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600390639] [2020-08-19 06:00:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:00:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 06:00:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:30,844 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 06:00:30,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600390639] [2020-08-19 06:00:30,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:30,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:00:30,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698234485] [2020-08-19 06:00:30,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:00:30,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:30,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:00:30,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:00:30,848 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-08-19 06:00:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:31,820 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-08-19 06:00:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:00:31,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-19 06:00:31,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:31,823 INFO L225 Difference]: With dead ends: 290 [2020-08-19 06:00:31,823 INFO L226 Difference]: Without dead ends: 242 [2020-08-19 06:00:31,824 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 06:00:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-19 06:00:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-19 06:00:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 06:00:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-08-19 06:00:31,847 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-08-19 06:00:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:31,848 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-08-19 06:00:31,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:00:31,848 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-08-19 06:00:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 06:00:31,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:31,854 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 06:00:31,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:00:31,855 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:31,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-08-19 06:00:31,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:31,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933023812] [2020-08-19 06:00:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:31,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:31,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:31,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 06:00:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:00:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 06:00:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,029 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 06:00:32,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933023812] [2020-08-19 06:00:32,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:32,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:00:32,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995607387] [2020-08-19 06:00:32,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:00:32,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:32,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:00:32,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:00:32,031 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-08-19 06:00:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:32,607 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-08-19 06:00:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:00:32,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-19 06:00:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:32,610 INFO L225 Difference]: With dead ends: 270 [2020-08-19 06:00:32,610 INFO L226 Difference]: Without dead ends: 240 [2020-08-19 06:00:32,611 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 06:00:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-19 06:00:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-08-19 06:00:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 06:00:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-08-19 06:00:32,630 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-08-19 06:00:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:32,631 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-08-19 06:00:32,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:00:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-08-19 06:00:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 06:00:32,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:32,633 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 06:00:32,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:00:32,633 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:32,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-08-19 06:00:32,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:32,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106604679] [2020-08-19 06:00:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:00:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:00:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:32,893 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 06:00:32,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106604679] [2020-08-19 06:00:32,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:32,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:00:32,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685161197] [2020-08-19 06:00:32,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:00:32,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:32,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:00:32,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:00:32,902 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 9 states. [2020-08-19 06:00:34,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:34,229 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-08-19 06:00:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:00:34,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-19 06:00:34,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:34,233 INFO L225 Difference]: With dead ends: 313 [2020-08-19 06:00:34,233 INFO L226 Difference]: Without dead ends: 307 [2020-08-19 06:00:34,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:00:34,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-19 06:00:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-08-19 06:00:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-19 06:00:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-08-19 06:00:34,257 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-08-19 06:00:34,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:34,257 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-08-19 06:00:34,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:00:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-08-19 06:00:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:00:34,259 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:34,259 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 06:00:34,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:00:34,260 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:34,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:34,260 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-08-19 06:00:34,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:34,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048803578] [2020-08-19 06:00:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:34,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:34,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:00:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:34,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:00:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:34,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:34,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048803578] [2020-08-19 06:00:34,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:34,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 06:00:34,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48083402] [2020-08-19 06:00:34,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:00:34,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:34,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:00:34,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:00:34,544 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 13 states. [2020-08-19 06:00:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:36,631 INFO L93 Difference]: Finished difference Result 325 states and 410 transitions. [2020-08-19 06:00:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 06:00:36,632 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-08-19 06:00:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:36,634 INFO L225 Difference]: With dead ends: 325 [2020-08-19 06:00:36,634 INFO L226 Difference]: Without dead ends: 284 [2020-08-19 06:00:36,635 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 06:00:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-19 06:00:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2020-08-19 06:00:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 06:00:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-08-19 06:00:36,670 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-08-19 06:00:36,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:36,671 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-08-19 06:00:36,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:00:36,671 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-08-19 06:00:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 06:00:36,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:36,673 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 06:00:36,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:00:36,674 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:36,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:36,675 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-08-19 06:00:36,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:36,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570203000] [2020-08-19 06:00:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:36,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:36,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 06:00:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:00:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:36,954 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 06:00:36,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570203000] [2020-08-19 06:00:36,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:36,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 06:00:36,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361061719] [2020-08-19 06:00:36,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 06:00:36,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:36,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 06:00:36,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:00:36,957 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-08-19 06:00:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:38,063 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-08-19 06:00:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:00:38,063 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-08-19 06:00:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:38,066 INFO L225 Difference]: With dead ends: 252 [2020-08-19 06:00:38,067 INFO L226 Difference]: Without dead ends: 211 [2020-08-19 06:00:38,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:00:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-08-19 06:00:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-08-19 06:00:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-19 06:00:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-19 06:00:38,113 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-08-19 06:00:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:38,114 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-19 06:00:38,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 06:00:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-19 06:00:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 06:00:38,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:38,115 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 06:00:38,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:00:38,116 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:38,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-08-19 06:00:38,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:38,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721317203] [2020-08-19 06:00:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:38,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:38,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:38,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:00:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:38,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:38,338 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 06:00:38,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721317203] [2020-08-19 06:00:38,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:38,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 06:00:38,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957091267] [2020-08-19 06:00:38,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 06:00:38,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:38,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 06:00:38,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:00:38,341 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-08-19 06:00:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:39,612 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-08-19 06:00:39,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:00:39,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-19 06:00:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:39,614 INFO L225 Difference]: With dead ends: 227 [2020-08-19 06:00:39,614 INFO L226 Difference]: Without dead ends: 206 [2020-08-19 06:00:39,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-19 06:00:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-19 06:00:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-19 06:00:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 06:00:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-08-19 06:00:39,642 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-08-19 06:00:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:39,644 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-08-19 06:00:39,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 06:00:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-08-19 06:00:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 06:00:39,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:39,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:39,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:00:39,646 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:39,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:39,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-08-19 06:00:39,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:39,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744022778] [2020-08-19 06:00:39,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 06:00:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:00:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:00:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,878 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 06:00:39,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744022778] [2020-08-19 06:00:39,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:39,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:00:39,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692091386] [2020-08-19 06:00:39,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:00:39,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:39,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:00:39,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:00:39,881 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 11 states. [2020-08-19 06:00:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,732 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2020-08-19 06:00:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:00:40,733 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-19 06:00:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,736 INFO L225 Difference]: With dead ends: 296 [2020-08-19 06:00:40,736 INFO L226 Difference]: Without dead ends: 224 [2020-08-19 06:00:40,737 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 06:00:40,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-19 06:00:40,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2020-08-19 06:00:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-19 06:00:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-08-19 06:00:40,756 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 57 [2020-08-19 06:00:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,756 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-08-19 06:00:40,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:00:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-08-19 06:00:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 06:00:40,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,758 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 06:00:40,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 06:00:40,759 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,759 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-08-19 06:00:40,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601896273] [2020-08-19 06:00:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 06:00:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:00:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:00:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,966 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 06:00:40,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601896273] [2020-08-19 06:00:40,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 06:00:40,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825870867] [2020-08-19 06:00:40,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 06:00:40,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 06:00:40,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:00:40,968 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 11 states. [2020-08-19 06:00:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:41,939 INFO L93 Difference]: Finished difference Result 232 states and 299 transitions. [2020-08-19 06:00:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 06:00:41,940 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-19 06:00:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:41,942 INFO L225 Difference]: With dead ends: 232 [2020-08-19 06:00:41,942 INFO L226 Difference]: Without dead ends: 225 [2020-08-19 06:00:41,943 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 06:00:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-19 06:00:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2020-08-19 06:00:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-19 06:00:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-08-19 06:00:41,964 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 57 [2020-08-19 06:00:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:41,964 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-08-19 06:00:41,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 06:00:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-08-19 06:00:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 06:00:41,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:41,966 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 06:00:41,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 06:00:41,967 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:41,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-08-19 06:00:41,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:41,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5393414] [2020-08-19 06:00:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:00:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 06:00:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 06:00:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:42,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5393414] [2020-08-19 06:00:42,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:42,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:00:42,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464383269] [2020-08-19 06:00:42,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:00:42,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:42,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:00:42,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:00:42,211 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-08-19 06:00:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:42,842 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-08-19 06:00:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:00:42,843 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-08-19 06:00:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:42,845 INFO L225 Difference]: With dead ends: 258 [2020-08-19 06:00:42,846 INFO L226 Difference]: Without dead ends: 214 [2020-08-19 06:00:42,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:00:42,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-19 06:00:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-19 06:00:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-19 06:00:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 274 transitions. [2020-08-19 06:00:42,864 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 274 transitions. Word has length 60 [2020-08-19 06:00:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:42,864 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 274 transitions. [2020-08-19 06:00:42,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:00:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 274 transitions. [2020-08-19 06:00:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 06:00:42,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:42,866 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 06:00:42,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 06:00:42,866 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-08-19 06:00:42,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:42,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075409478] [2020-08-19 06:00:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:43,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:43,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 06:00:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:43,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:00:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:43,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 06:00:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:43,194 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 06:00:43,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075409478] [2020-08-19 06:00:43,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:43,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 06:00:43,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668734745] [2020-08-19 06:00:43,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 06:00:43,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:43,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 06:00:43,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:00:43,201 INFO L87 Difference]: Start difference. First operand 214 states and 274 transitions. Second operand 15 states. [2020-08-19 06:00:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:44,479 INFO L93 Difference]: Finished difference Result 226 states and 286 transitions. [2020-08-19 06:00:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:00:44,479 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-08-19 06:00:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:44,481 INFO L225 Difference]: With dead ends: 226 [2020-08-19 06:00:44,481 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 06:00:44,482 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 06:00:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 06:00:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-08-19 06:00:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-19 06:00:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2020-08-19 06:00:44,497 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 61 [2020-08-19 06:00:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:44,498 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2020-08-19 06:00:44,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 06:00:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2020-08-19 06:00:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 06:00:44,499 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:44,499 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 06:00:44,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 06:00:44,500 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:44,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-08-19 06:00:44,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:44,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189902523] [2020-08-19 06:00:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:44,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:44,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:44,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:00:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:44,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 06:00:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 06:00:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:44,802 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 06:00:44,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189902523] [2020-08-19 06:00:44,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:44,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 06:00:44,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119074340] [2020-08-19 06:00:44,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 06:00:44,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:44,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 06:00:44,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:00:44,805 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand 15 states. [2020-08-19 06:00:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:45,587 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2020-08-19 06:00:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:00:45,588 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-19 06:00:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:45,589 INFO L225 Difference]: With dead ends: 200 [2020-08-19 06:00:45,590 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 06:00:45,590 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 06:00:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 06:00:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-19 06:00:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-19 06:00:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2020-08-19 06:00:45,607 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 56 [2020-08-19 06:00:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:45,607 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2020-08-19 06:00:45,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 06:00:45,607 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2020-08-19 06:00:45,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 06:00:45,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:45,608 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 06:00:45,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 06:00:45,609 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:45,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:45,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-08-19 06:00:45,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:45,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90769805] [2020-08-19 06:00:45,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:45,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:45,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:45,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:00:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:00:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:45,923 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 06:00:45,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90769805] [2020-08-19 06:00:45,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:45,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 06:00:45,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440803866] [2020-08-19 06:00:45,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:00:45,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:45,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:00:45,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:00:45,926 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 13 states. [2020-08-19 06:00:47,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:47,287 INFO L93 Difference]: Finished difference Result 237 states and 286 transitions. [2020-08-19 06:00:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:00:47,287 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-08-19 06:00:47,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:47,289 INFO L225 Difference]: With dead ends: 237 [2020-08-19 06:00:47,289 INFO L226 Difference]: Without dead ends: 220 [2020-08-19 06:00:47,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-08-19 06:00:47,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-19 06:00:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-08-19 06:00:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-19 06:00:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-08-19 06:00:47,313 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2020-08-19 06:00:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:47,313 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-08-19 06:00:47,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:00:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-08-19 06:00:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 06:00:47,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:47,315 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 06:00:47,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 06:00:47,316 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:47,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:47,316 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-08-19 06:00:47,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:47,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192227399] [2020-08-19 06:00:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:47,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:47,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 06:00:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:47,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 06:00:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:47,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192227399] [2020-08-19 06:00:47,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:47,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 06:00:47,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748968346] [2020-08-19 06:00:47,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 06:00:47,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:47,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 06:00:47,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-19 06:00:47,569 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 14 states. [2020-08-19 06:00:48,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:48,528 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2020-08-19 06:00:48,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 06:00:48,528 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-08-19 06:00:48,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:48,530 INFO L225 Difference]: With dead ends: 206 [2020-08-19 06:00:48,530 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 06:00:48,531 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 06:00:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 06:00:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-08-19 06:00:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 06:00:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2020-08-19 06:00:48,546 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 55 [2020-08-19 06:00:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:48,546 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2020-08-19 06:00:48,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 06:00:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2020-08-19 06:00:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 06:00:48,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:48,548 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 06:00:48,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 06:00:48,548 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:48,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:48,549 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-08-19 06:00:48,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:48,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462876241] [2020-08-19 06:00:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:48,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:00:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:48,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:00:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:48,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 06:00:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:00:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:48,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:00:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:48,787 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 06:00:48,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462876241] [2020-08-19 06:00:48,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:48,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 06:00:48,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159373264] [2020-08-19 06:00:48,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 06:00:48,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:48,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 06:00:48,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:00:48,790 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand 10 states. [2020-08-19 06:00:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:49,137 INFO L93 Difference]: Finished difference Result 204 states and 235 transitions. [2020-08-19 06:00:49,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:00:49,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-08-19 06:00:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:49,139 INFO L225 Difference]: With dead ends: 204 [2020-08-19 06:00:49,139 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 06:00:49,139 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 06:00:49,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 06:00:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-19 06:00:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-19 06:00:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2020-08-19 06:00:49,154 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 58 [2020-08-19 06:00:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:49,155 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2020-08-19 06:00:49,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 06:00:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2020-08-19 06:00:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 06:00:49,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:49,157 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 06:00:49,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 06:00:49,158 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:49,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-08-19 06:00:49,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:49,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331745774] [2020-08-19 06:00:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:00:49,210 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:00:49,211 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:00:49,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 06:00:49,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:00:49 BoogieIcfgContainer [2020-08-19 06:00:49,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:00:49,270 INFO L168 Benchmark]: Toolchain (without parser) took 27965.69 ms. Allocated memory was 140.5 MB in the beginning and 535.3 MB in the end (delta: 394.8 MB). Free memory was 103.1 MB in the beginning and 403.4 MB in the end (delta: -300.3 MB). Peak memory consumption was 94.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:49,271 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:00:49,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.23 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 176.8 MB in the end (delta: -73.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:49,274 INFO L168 Benchmark]: Boogie Preprocessor took 70.71 ms. Allocated memory is still 203.9 MB. Free memory was 176.8 MB in the beginning and 173.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:49,275 INFO L168 Benchmark]: RCFGBuilder took 1018.91 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 101.9 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:49,276 INFO L168 Benchmark]: TraceAbstraction took 26263.44 ms. Allocated memory was 203.9 MB in the beginning and 535.3 MB in the end (delta: 331.4 MB). Free memory was 101.9 MB in the beginning and 403.4 MB in the end (delta: -301.5 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:49,282 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 606.23 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 176.8 MB in the end (delta: -73.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.71 ms. Allocated memory is still 203.9 MB. Free memory was 176.8 MB in the beginning and 173.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1018.91 ms. Allocated memory is still 203.9 MB. Free memory was 173.4 MB in the beginning and 101.9 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26263.44 ms. Allocated memory was 203.9 MB in the beginning and 535.3 MB in the end (delta: 331.4 MB). Free memory was 101.9 MB in the beginning and 403.4 MB in the end (delta: -301.5 MB). Peak memory consumption was 29.9 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: 26.1s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4633 SDtfs, 6121 SDslu, 7830 SDs, 0 SdLazy, 16044 SolverSat, 1268 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 20 MinimizatonAttempts, 275 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s 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...