/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=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:23:18,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:23:18,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:23:18,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:23:18,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:23:18,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:23:18,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:23:18,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:23:18,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:23:18,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:23:18,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:23:18,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:23:18,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:23:18,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:23:18,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:23:18,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:23:18,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:23:18,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:23:18,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:23:18,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:23:18,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:23:18,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:23:18,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:23:18,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:23:18,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:23:18,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:23:18,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:23:18,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:23:18,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:23:18,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:23:18,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:23:18,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:23:18,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:23:18,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:23:18,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:23:18,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:23:18,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:23:18,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:23:18,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:23:18,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:23:18,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:23:18,284 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 04:23:18,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:23:18,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:23:18,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:23:18,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:23:18,326 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:23:18,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:23:18,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:23:18,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:23:18,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:23:18,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:23:18,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:23:18,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:23:18,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:23:18,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:23:18,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:23:18,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:23:18,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:23:18,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:23:18,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:23:18,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:23:18,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:23:18,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:23:18,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:23:18,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:23:18,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:23:18,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:23:18,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:23:18,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:23:18,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:23:18,332 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:23:18,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:23:18,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:23:18,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:23:18,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:23:18,671 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:23:18,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-19 04:23:18,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c638f2d7a/d31d4aea7af14ef7baeb7be0a6a21e32/FLAG73e0eeb6b [2020-08-19 04:23:19,286 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:23:19,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-08-19 04:23:19,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c638f2d7a/d31d4aea7af14ef7baeb7be0a6a21e32/FLAG73e0eeb6b [2020-08-19 04:23:19,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c638f2d7a/d31d4aea7af14ef7baeb7be0a6a21e32 [2020-08-19 04:23:19,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:23:19,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:23:19,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:19,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:23:19,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:23:19,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:19" (1/1) ... [2020-08-19 04:23:19,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177f3252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:19, skipping insertion in model container [2020-08-19 04:23:19,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:19" (1/1) ... [2020-08-19 04:23:19,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:23:19,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:23:20,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:20,074 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:23:20,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:20,279 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:23:20,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20 WrapperNode [2020-08-19 04:23:20,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:20,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:23:20,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:23:20,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:23:20,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (1/1) ... [2020-08-19 04:23:20,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (1/1) ... [2020-08-19 04:23:20,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (1/1) ... [2020-08-19 04:23:20,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (1/1) ... [2020-08-19 04:23:20,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (1/1) ... [2020-08-19 04:23:20,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (1/1) ... [2020-08-19 04:23:20,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (1/1) ... [2020-08-19 04:23:20,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:23:20,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:23:20,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:23:20,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:23:20,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (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 04:23:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:23:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:23:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-08-19 04:23:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-08-19 04:23:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-08-19 04:23:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:23:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-08-19 04:23:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-08-19 04:23:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-08-19 04:23:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-08-19 04:23:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-08-19 04:23:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-08-19 04:23:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-08-19 04:23:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-08-19 04:23:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-08-19 04:23:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-08-19 04:23:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-08-19 04:23:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-08-19 04:23:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:23:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-19 04:23:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:23:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-08-19 04:23:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-08-19 04:23:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-08-19 04:23:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-08-19 04:23:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-08-19 04:23:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-08-19 04:23:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-08-19 04:23:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-08-19 04:23:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-08-19 04:23:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-08-19 04:23:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-08-19 04:23:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-08-19 04:23:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-08-19 04:23:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-08-19 04:23:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-08-19 04:23:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:23:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-08-19 04:23:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:23:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:23:20,718 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 04:23:20,790 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-08-19 04:23:20,791 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-08-19 04:23:20,814 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 04:23:20,956 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-08-19 04:23:20,956 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-08-19 04:23:20,958 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 04:23:21,002 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-19 04:23:21,002 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-19 04:23:21,008 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 04:23:21,049 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-08-19 04:23:21,050 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-08-19 04:23:21,138 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 04:23:21,156 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-08-19 04:23:21,157 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-08-19 04:23:21,185 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-08-19 04:23:21,272 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-08-19 04:23:21,272 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-08-19 04:23:21,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:23:21,290 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 04:23:21,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:21 BoogieIcfgContainer [2020-08-19 04:23:21,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:23:21,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:23:21,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:23:21,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:23:21,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:23:19" (1/3) ... [2020-08-19 04:23:21,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb6df66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:21, skipping insertion in model container [2020-08-19 04:23:21,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:20" (2/3) ... [2020-08-19 04:23:21,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb6df66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:21, skipping insertion in model container [2020-08-19 04:23:21,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:21" (3/3) ... [2020-08-19 04:23:21,305 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-08-19 04:23:21,316 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:23:21,325 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:23:21,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:23:21,368 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:23:21,368 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:23:21,368 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:23:21,368 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:23:21,369 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:23:21,369 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:23:21,369 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:23:21,369 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:23:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-08-19 04:23:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 04:23:21,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:21,419 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 04:23:21,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:21,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:21,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-08-19 04:23:21,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:21,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205625052] [2020-08-19 04:23:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:21,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:21,854 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 04:23:21,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205625052] [2020-08-19 04:23:21,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:21,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:23:21,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363988947] [2020-08-19 04:23:21,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:23:21,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:21,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:23:21,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:23:21,883 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-08-19 04:23:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:22,996 INFO L93 Difference]: Finished difference Result 418 states and 629 transitions. [2020-08-19 04:23:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:23:22,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-19 04:23:22,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:23,022 INFO L225 Difference]: With dead ends: 418 [2020-08-19 04:23:23,023 INFO L226 Difference]: Without dead ends: 259 [2020-08-19 04:23:23,029 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 04:23:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-19 04:23:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 231. [2020-08-19 04:23:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-08-19 04:23:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2020-08-19 04:23:23,105 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 20 [2020-08-19 04:23:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:23,105 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2020-08-19 04:23:23,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:23:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2020-08-19 04:23:23,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 04:23:23,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:23,107 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 04:23:23,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:23:23,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-08-19 04:23:23,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:23,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490879299] [2020-08-19 04:23:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:23,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:23,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:23,398 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 04:23:23,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490879299] [2020-08-19 04:23:23,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:23,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:23:23,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323805199] [2020-08-19 04:23:23,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:23:23,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:23,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:23:23,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:23,402 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand 6 states. [2020-08-19 04:23:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:24,708 INFO L93 Difference]: Finished difference Result 410 states and 565 transitions. [2020-08-19 04:23:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:23:24,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 04:23:24,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:24,712 INFO L225 Difference]: With dead ends: 410 [2020-08-19 04:23:24,713 INFO L226 Difference]: Without dead ends: 349 [2020-08-19 04:23:24,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:23:24,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-19 04:23:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 304. [2020-08-19 04:23:24,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 04:23:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 415 transitions. [2020-08-19 04:23:24,766 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 415 transitions. Word has length 28 [2020-08-19 04:23:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:24,769 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 415 transitions. [2020-08-19 04:23:24,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:23:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2020-08-19 04:23:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 04:23:24,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:24,772 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 04:23:24,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:23:24,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-08-19 04:23:24,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:24,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130016041] [2020-08-19 04:23:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:24,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:24,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:24,984 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 04:23:24,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130016041] [2020-08-19 04:23:24,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:24,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:23:24,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283596688] [2020-08-19 04:23:24,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:23:24,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:24,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:23:24,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:24,987 INFO L87 Difference]: Start difference. First operand 304 states and 415 transitions. Second operand 6 states. [2020-08-19 04:23:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:25,775 INFO L93 Difference]: Finished difference Result 487 states and 647 transitions. [2020-08-19 04:23:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:23:25,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 04:23:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:25,783 INFO L225 Difference]: With dead ends: 487 [2020-08-19 04:23:25,783 INFO L226 Difference]: Without dead ends: 368 [2020-08-19 04:23:25,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:23:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-08-19 04:23:25,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 344. [2020-08-19 04:23:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-08-19 04:23:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 466 transitions. [2020-08-19 04:23:25,829 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 466 transitions. Word has length 28 [2020-08-19 04:23:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:25,829 INFO L479 AbstractCegarLoop]: Abstraction has 344 states and 466 transitions. [2020-08-19 04:23:25,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:23:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 466 transitions. [2020-08-19 04:23:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-19 04:23:25,833 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:25,833 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 04:23:25,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:23:25,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:25,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-08-19 04:23:25,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:25,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204698525] [2020-08-19 04:23:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:25,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:25,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:26,016 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 04:23:26,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204698525] [2020-08-19 04:23:26,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:26,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:23:26,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709633385] [2020-08-19 04:23:26,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:23:26,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:26,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:23:26,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:23:26,019 INFO L87 Difference]: Start difference. First operand 344 states and 466 transitions. Second operand 6 states. [2020-08-19 04:23:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:26,976 INFO L93 Difference]: Finished difference Result 347 states and 468 transitions. [2020-08-19 04:23:26,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:23:26,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-19 04:23:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:26,980 INFO L225 Difference]: With dead ends: 347 [2020-08-19 04:23:26,980 INFO L226 Difference]: Without dead ends: 343 [2020-08-19 04:23:26,981 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 04:23:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-08-19 04:23:27,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-08-19 04:23:27,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-19 04:23:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 463 transitions. [2020-08-19 04:23:27,012 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 463 transitions. Word has length 38 [2020-08-19 04:23:27,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:27,013 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 463 transitions. [2020-08-19 04:23:27,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:23:27,013 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 463 transitions. [2020-08-19 04:23:27,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:23:27,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:27,017 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 04:23:27,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:23:27,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:27,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-08-19 04:23:27,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:27,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937464319] [2020-08-19 04:23:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:27,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 04:23:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:27,209 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 04:23:27,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937464319] [2020-08-19 04:23:27,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:27,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:23:27,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434709513] [2020-08-19 04:23:27,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:23:27,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:27,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:23:27,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:23:27,212 INFO L87 Difference]: Start difference. First operand 343 states and 463 transitions. Second operand 8 states. [2020-08-19 04:23:28,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:28,326 INFO L93 Difference]: Finished difference Result 394 states and 520 transitions. [2020-08-19 04:23:28,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:23:28,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-19 04:23:28,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:28,330 INFO L225 Difference]: With dead ends: 394 [2020-08-19 04:23:28,330 INFO L226 Difference]: Without dead ends: 325 [2020-08-19 04:23:28,331 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 04:23:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-08-19 04:23:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 304. [2020-08-19 04:23:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 04:23:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 406 transitions. [2020-08-19 04:23:28,372 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 406 transitions. Word has length 46 [2020-08-19 04:23:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:28,373 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 406 transitions. [2020-08-19 04:23:28,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:23:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 406 transitions. [2020-08-19 04:23:28,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-19 04:23:28,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:28,375 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 04:23:28,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:23:28,376 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:28,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:28,376 INFO L82 PathProgramCache]: Analyzing trace with hash 750041855, now seen corresponding path program 1 times [2020-08-19 04:23:28,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:28,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229536622] [2020-08-19 04:23:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:28,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:28,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:23:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 04:23:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:28,575 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 04:23:28,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229536622] [2020-08-19 04:23:28,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:28,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:23:28,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869965981] [2020-08-19 04:23:28,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:23:28,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:28,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:23:28,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:23:28,579 INFO L87 Difference]: Start difference. First operand 304 states and 406 transitions. Second operand 8 states. [2020-08-19 04:23:29,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:29,061 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2020-08-19 04:23:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:23:29,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-08-19 04:23:29,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:29,065 INFO L225 Difference]: With dead ends: 316 [2020-08-19 04:23:29,065 INFO L226 Difference]: Without dead ends: 300 [2020-08-19 04:23:29,066 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 04:23:29,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-19 04:23:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 270. [2020-08-19 04:23:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-19 04:23:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-08-19 04:23:29,105 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 45 [2020-08-19 04:23:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:29,105 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-08-19 04:23:29,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:23:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-08-19 04:23:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:23:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:29,107 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 04:23:29,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:23:29,108 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:29,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-08-19 04:23:29,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:29,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533224429] [2020-08-19 04:23:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:29,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:23:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 04:23:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:29,312 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 04:23:29,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533224429] [2020-08-19 04:23:29,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:29,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:23:29,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87200730] [2020-08-19 04:23:29,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:23:29,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:29,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:23:29,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:23:29,314 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-08-19 04:23:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:30,254 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-08-19 04:23:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:23:30,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-08-19 04:23:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:30,257 INFO L225 Difference]: With dead ends: 290 [2020-08-19 04:23:30,257 INFO L226 Difference]: Without dead ends: 242 [2020-08-19 04:23:30,258 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 04:23:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-08-19 04:23:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-08-19 04:23:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-19 04:23:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-08-19 04:23:30,274 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-08-19 04:23:30,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:30,274 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-08-19 04:23:30,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:23:30,275 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-08-19 04:23:30,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 04:23:30,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:30,276 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 04:23:30,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:23:30,277 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:30,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:30,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-08-19 04:23:30,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:30,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390248481] [2020-08-19 04:23:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:23:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:23:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:30,475 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 04:23:30,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390248481] [2020-08-19 04:23:30,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:30,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:23:30,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232717440] [2020-08-19 04:23:30,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:23:30,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:30,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:23:30,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:23:30,478 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-08-19 04:23:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:31,090 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-08-19 04:23:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:23:31,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-19 04:23:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:31,095 INFO L225 Difference]: With dead ends: 270 [2020-08-19 04:23:31,096 INFO L226 Difference]: Without dead ends: 240 [2020-08-19 04:23:31,096 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 04:23:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-19 04:23:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-08-19 04:23:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 04:23:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-08-19 04:23:31,121 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-08-19 04:23:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:31,122 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-08-19 04:23:31,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:23:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-08-19 04:23:31,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:23:31,124 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:31,124 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 04:23:31,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:23:31,125 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:31,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-08-19 04:23:31,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:31,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863449300] [2020-08-19 04:23:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:23:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:31,384 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 04:23:31,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863449300] [2020-08-19 04:23:31,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:31,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:23:31,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232813415] [2020-08-19 04:23:31,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:23:31,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:31,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:23:31,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:23:31,393 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 9 states. [2020-08-19 04:23:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:32,793 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-08-19 04:23:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 04:23:32,794 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-19 04:23:32,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:32,797 INFO L225 Difference]: With dead ends: 313 [2020-08-19 04:23:32,798 INFO L226 Difference]: Without dead ends: 307 [2020-08-19 04:23:32,798 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 04:23:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-08-19 04:23:32,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-08-19 04:23:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-08-19 04:23:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-08-19 04:23:32,820 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-08-19 04:23:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:32,821 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-08-19 04:23:32,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:23:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-08-19 04:23:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:23:32,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:32,823 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 04:23:32,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:23:32,823 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:32,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:32,824 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-08-19 04:23:32,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:32,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452175211] [2020-08-19 04:23:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:23:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:33,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:33,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452175211] [2020-08-19 04:23:33,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:33,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 04:23:33,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031163629] [2020-08-19 04:23:33,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:23:33,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:33,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:23:33,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:23:33,067 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 13 states. [2020-08-19 04:23:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:35,207 INFO L93 Difference]: Finished difference Result 325 states and 410 transitions. [2020-08-19 04:23:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 04:23:35,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-08-19 04:23:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:35,210 INFO L225 Difference]: With dead ends: 325 [2020-08-19 04:23:35,210 INFO L226 Difference]: Without dead ends: 284 [2020-08-19 04:23:35,212 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 04:23:35,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-08-19 04:23:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2020-08-19 04:23:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-19 04:23:35,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-08-19 04:23:35,255 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-08-19 04:23:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:35,256 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-08-19 04:23:35,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:23:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-08-19 04:23:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 04:23:35,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:35,260 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 04:23:35,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:23:35,261 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-08-19 04:23:35,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:35,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206909330] [2020-08-19 04:23:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 04:23:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:35,591 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 04:23:35,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206909330] [2020-08-19 04:23:35,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:35,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:23:35,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387012107] [2020-08-19 04:23:35,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:23:35,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:35,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:23:35,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:23:35,594 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-08-19 04:23:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:36,773 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-08-19 04:23:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 04:23:36,774 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-08-19 04:23:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:36,777 INFO L225 Difference]: With dead ends: 252 [2020-08-19 04:23:36,777 INFO L226 Difference]: Without dead ends: 211 [2020-08-19 04:23:36,778 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 04:23:36,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-08-19 04:23:36,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-08-19 04:23:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-19 04:23:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-08-19 04:23:36,796 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-08-19 04:23:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:36,796 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-08-19 04:23:36,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:23:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-08-19 04:23:36,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 04:23:36,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:36,798 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 04:23:36,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:23:36,798 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:36,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-08-19 04:23:36,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:36,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241993284] [2020-08-19 04:23:36,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:36,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:36,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:36,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 04:23:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,096 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 04:23:37,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241993284] [2020-08-19 04:23:37,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:37,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 04:23:37,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433844700] [2020-08-19 04:23:37,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 04:23:37,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:37,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 04:23:37,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:23:37,100 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-08-19 04:23:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,335 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-08-19 04:23:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:23:38,336 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-19 04:23:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,338 INFO L225 Difference]: With dead ends: 227 [2020-08-19 04:23:38,338 INFO L226 Difference]: Without dead ends: 206 [2020-08-19 04:23:38,338 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 04:23:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-19 04:23:38,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-19 04:23:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-19 04:23:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-08-19 04:23:38,356 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-08-19 04:23:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,357 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-08-19 04:23:38,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 04:23:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-08-19 04:23:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:23:38,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,358 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 04:23:38,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 04:23:38,359 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-08-19 04:23:38,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513539608] [2020-08-19 04:23:38,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 04:23:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,565 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 04:23:38,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513539608] [2020-08-19 04:23:38,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:23:38,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220337464] [2020-08-19 04:23:38,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:23:38,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:23:38,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:23:38,568 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 11 states. [2020-08-19 04:23:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,409 INFO L93 Difference]: Finished difference Result 296 states and 379 transitions. [2020-08-19 04:23:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:23:39,410 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-19 04:23:39,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,412 INFO L225 Difference]: With dead ends: 296 [2020-08-19 04:23:39,413 INFO L226 Difference]: Without dead ends: 224 [2020-08-19 04:23:39,414 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 04:23:39,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-08-19 04:23:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2020-08-19 04:23:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-19 04:23:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 278 transitions. [2020-08-19 04:23:39,432 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 278 transitions. Word has length 57 [2020-08-19 04:23:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,432 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 278 transitions. [2020-08-19 04:23:39,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:23:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 278 transitions. [2020-08-19 04:23:39,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 04:23:39,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,434 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 04:23:39,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 04:23:39,434 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,434 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-08-19 04:23:39,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943222760] [2020-08-19 04:23:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 04:23:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,671 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 04:23:39,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943222760] [2020-08-19 04:23:39,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:23:39,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789060914] [2020-08-19 04:23:39,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:23:39,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:23:39,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:23:39,674 INFO L87 Difference]: Start difference. First operand 214 states and 278 transitions. Second operand 11 states. [2020-08-19 04:23:40,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:40,615 INFO L93 Difference]: Finished difference Result 232 states and 299 transitions. [2020-08-19 04:23:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:23:40,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-19 04:23:40,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:40,618 INFO L225 Difference]: With dead ends: 232 [2020-08-19 04:23:40,619 INFO L226 Difference]: Without dead ends: 225 [2020-08-19 04:23:40,619 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 04:23:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-19 04:23:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 215. [2020-08-19 04:23:40,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-19 04:23:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2020-08-19 04:23:40,656 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 57 [2020-08-19 04:23:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:40,656 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2020-08-19 04:23:40,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:23:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2020-08-19 04:23:40,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 04:23:40,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:40,658 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 04:23:40,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 04:23:40,658 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:40,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:40,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-08-19 04:23:40,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:40,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013697699] [2020-08-19 04:23:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:23:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 04:23:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 04:23:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:40,840 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 04:23:40,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013697699] [2020-08-19 04:23:40,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:40,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:23:40,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206497921] [2020-08-19 04:23:40,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:23:40,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:40,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:23:40,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:23:40,843 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand 8 states. [2020-08-19 04:23:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:41,408 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-08-19 04:23:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:23:41,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-08-19 04:23:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:41,411 INFO L225 Difference]: With dead ends: 258 [2020-08-19 04:23:41,411 INFO L226 Difference]: Without dead ends: 214 [2020-08-19 04:23:41,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:23:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-08-19 04:23:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-08-19 04:23:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-19 04:23:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 274 transitions. [2020-08-19 04:23:41,432 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 274 transitions. Word has length 60 [2020-08-19 04:23:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:41,432 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 274 transitions. [2020-08-19 04:23:41,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:23:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 274 transitions. [2020-08-19 04:23:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 04:23:41,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:41,434 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 04:23:41,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 04:23:41,434 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:41,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:41,434 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-08-19 04:23:41,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:41,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061368457] [2020-08-19 04:23:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:23:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 04:23:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:41,780 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 04:23:41,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061368457] [2020-08-19 04:23:41,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:41,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 04:23:41,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374331180] [2020-08-19 04:23:41,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 04:23:41,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:41,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 04:23:41,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:23:41,788 INFO L87 Difference]: Start difference. First operand 214 states and 274 transitions. Second operand 15 states. [2020-08-19 04:23:43,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:43,127 INFO L93 Difference]: Finished difference Result 226 states and 286 transitions. [2020-08-19 04:23:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:23:43,128 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-08-19 04:23:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:43,130 INFO L225 Difference]: With dead ends: 226 [2020-08-19 04:23:43,130 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 04:23:43,131 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 04:23:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 04:23:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-08-19 04:23:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-19 04:23:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 236 transitions. [2020-08-19 04:23:43,146 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 236 transitions. Word has length 61 [2020-08-19 04:23:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:43,147 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 236 transitions. [2020-08-19 04:23:43,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 04:23:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 236 transitions. [2020-08-19 04:23:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 04:23:43,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:43,148 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 04:23:43,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 04:23:43,148 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:43,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-08-19 04:23:43,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:43,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906465397] [2020-08-19 04:23:43,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:23:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-19 04:23:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-19 04:23:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:43,399 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 04:23:43,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906465397] [2020-08-19 04:23:43,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:43,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-19 04:23:43,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671136514] [2020-08-19 04:23:43,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 04:23:43,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:43,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 04:23:43,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:23:43,401 INFO L87 Difference]: Start difference. First operand 188 states and 236 transitions. Second operand 15 states. [2020-08-19 04:23:44,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:44,238 INFO L93 Difference]: Finished difference Result 200 states and 248 transitions. [2020-08-19 04:23:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:23:44,239 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-08-19 04:23:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:44,240 INFO L225 Difference]: With dead ends: 200 [2020-08-19 04:23:44,240 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 04:23:44,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:23:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 04:23:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-08-19 04:23:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-19 04:23:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 232 transitions. [2020-08-19 04:23:44,257 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 232 transitions. Word has length 56 [2020-08-19 04:23:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:44,257 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 232 transitions. [2020-08-19 04:23:44,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 04:23:44,258 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 232 transitions. [2020-08-19 04:23:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 04:23:44,259 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:44,259 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, 1, 1, 1] [2020-08-19 04:23:44,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 04:23:44,259 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:44,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:44,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-08-19 04:23:44,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:44,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132286255] [2020-08-19 04:23:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 04:23:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:23:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,550 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 04:23:44,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132286255] [2020-08-19 04:23:44,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:44,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 04:23:44,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157090606] [2020-08-19 04:23:44,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:23:44,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:44,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:23:44,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:23:44,558 INFO L87 Difference]: Start difference. First operand 186 states and 232 transitions. Second operand 13 states. [2020-08-19 04:23:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:45,730 INFO L93 Difference]: Finished difference Result 237 states and 286 transitions. [2020-08-19 04:23:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 04:23:45,730 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-08-19 04:23:45,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:45,733 INFO L225 Difference]: With dead ends: 237 [2020-08-19 04:23:45,733 INFO L226 Difference]: Without dead ends: 220 [2020-08-19 04:23:45,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-08-19 04:23:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-08-19 04:23:45,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2020-08-19 04:23:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-19 04:23:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 237 transitions. [2020-08-19 04:23:45,750 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 237 transitions. Word has length 55 [2020-08-19 04:23:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:45,750 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 237 transitions. [2020-08-19 04:23:45,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:23:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 237 transitions. [2020-08-19 04:23:45,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 04:23:45,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:45,751 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 04:23:45,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 04:23:45,752 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:45,752 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-08-19 04:23:45,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:45,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617257606] [2020-08-19 04:23:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 04:23:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 04:23:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:23:46,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617257606] [2020-08-19 04:23:46,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:46,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 04:23:46,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266843875] [2020-08-19 04:23:46,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 04:23:46,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:46,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 04:23:46,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:23:46,037 INFO L87 Difference]: Start difference. First operand 190 states and 237 transitions. Second operand 14 states. [2020-08-19 04:23:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:46,974 INFO L93 Difference]: Finished difference Result 206 states and 253 transitions. [2020-08-19 04:23:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:23:46,975 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-08-19 04:23:46,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:46,976 INFO L225 Difference]: With dead ends: 206 [2020-08-19 04:23:46,976 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 04:23:46,977 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 04:23:46,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 04:23:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-08-19 04:23:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 04:23:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 194 transitions. [2020-08-19 04:23:46,995 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 194 transitions. Word has length 55 [2020-08-19 04:23:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:46,995 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 194 transitions. [2020-08-19 04:23:46,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 04:23:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 194 transitions. [2020-08-19 04:23:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 04:23:46,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:46,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:46,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 04:23:46,997 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:46,997 INFO L82 PathProgramCache]: Analyzing trace with hash -639520605, now seen corresponding path program 1 times [2020-08-19 04:23:46,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:46,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219235109] [2020-08-19 04:23:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:23:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:23:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 04:23:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,219 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 04:23:47,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219235109] [2020-08-19 04:23:47,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:47,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:23:47,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278037372] [2020-08-19 04:23:47,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:23:47,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:47,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:23:47,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:23:47,221 INFO L87 Difference]: Start difference. First operand 168 states and 194 transitions. Second operand 10 states. [2020-08-19 04:23:47,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:47,611 INFO L93 Difference]: Finished difference Result 204 states and 235 transitions. [2020-08-19 04:23:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:23:47,612 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-08-19 04:23:47,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:47,614 INFO L225 Difference]: With dead ends: 204 [2020-08-19 04:23:47,614 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 04:23:47,615 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 04:23:47,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 04:23:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-08-19 04:23:47,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-19 04:23:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 185 transitions. [2020-08-19 04:23:47,639 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 185 transitions. Word has length 58 [2020-08-19 04:23:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:47,639 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 185 transitions. [2020-08-19 04:23:47,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:23:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 185 transitions. [2020-08-19 04:23:47,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 04:23:47,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:47,643 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 04:23:47,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 04:23:47,644 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-08-19 04:23:47,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:47,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849523197] [2020-08-19 04:23:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:23:47,713 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:23:47,714 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:23:47,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 04:23:47,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:23:47 BoogieIcfgContainer [2020-08-19 04:23:47,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:23:47,789 INFO L168 Benchmark]: Toolchain (without parser) took 28192.80 ms. Allocated memory was 142.1 MB in the beginning and 497.5 MB in the end (delta: 355.5 MB). Free memory was 104.5 MB in the beginning and 268.5 MB in the end (delta: -164.0 MB). Peak memory consumption was 191.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:47,790 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:23:47,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.06 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.3 MB in the beginning and 177.5 MB in the end (delta: -73.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:47,795 INFO L168 Benchmark]: Boogie Preprocessor took 67.63 ms. Allocated memory is still 205.0 MB. Free memory was 177.5 MB in the beginning and 174.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:47,795 INFO L168 Benchmark]: RCFGBuilder took 947.39 ms. Allocated memory is still 205.0 MB. Free memory was 174.2 MB in the beginning and 102.9 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:47,796 INFO L168 Benchmark]: TraceAbstraction took 26481.79 ms. Allocated memory was 205.0 MB in the beginning and 497.5 MB in the end (delta: 292.6 MB). Free memory was 102.9 MB in the beginning and 268.5 MB in the end (delta: -165.6 MB). Peak memory consumption was 126.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:47,806 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 691.06 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 104.3 MB in the beginning and 177.5 MB in the end (delta: -73.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.63 ms. Allocated memory is still 205.0 MB. Free memory was 177.5 MB in the beginning and 174.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 947.39 ms. Allocated memory is still 205.0 MB. Free memory was 174.2 MB in the beginning and 102.9 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 26481.79 ms. Allocated memory was 205.0 MB in the beginning and 497.5 MB in the end (delta: 292.6 MB). Free memory was 102.9 MB in the beginning and 268.5 MB in the end (delta: -165.6 MB). Peak memory consumption was 126.9 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: 26.3s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 20.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4633 SDtfs, 6122 SDslu, 7830 SDs, 0 SdLazy, 16037 SolverSat, 1269 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s 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: 0.1s 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...