/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=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:30:01,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:30:01,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:30:01,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:30:01,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:30:01,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:30:01,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:30:01,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:30:01,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:30:01,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:30:01,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:30:01,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:30:01,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:30:01,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:30:01,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:30:01,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:30:01,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:30:01,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:30:01,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:30:01,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:30:01,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:30:01,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:30:01,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:30:01,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:30:01,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:30:01,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:30:01,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:30:01,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:30:01,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:30:01,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:30:01,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:30:01,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:30:01,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:30:01,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:30:01,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:30:01,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:30:01,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:30:01,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:30:01,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:30:01,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:30:01,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:30:01,225 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 03:30:01,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:30:01,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:30:01,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:30:01,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:30:01,250 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:30:01,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:30:01,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:30:01,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:30:01,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:30:01,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:30:01,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:30:01,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:30:01,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:30:01,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:30:01,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:30:01,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:30:01,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:30:01,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:30:01,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:30:01,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:30:01,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:30:01,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:30:01,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:30:01,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:30:01,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:30:01,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:30:01,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:30:01,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:30:01,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:30:01,255 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=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:30:01,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:30:01,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:30:01,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:30:01,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:30:01,562 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:30:01,563 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-19 03:30:01,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90549e290/96cac956d5c3458289b180af93be196d/FLAGaa6ec5504 [2020-08-19 03:30:02,131 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:30:02,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-19 03:30:02,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90549e290/96cac956d5c3458289b180af93be196d/FLAGaa6ec5504 [2020-08-19 03:30:02,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/90549e290/96cac956d5c3458289b180af93be196d [2020-08-19 03:30:02,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:30:02,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:30:02,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:30:02,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:30:02,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:30:02,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:30:02" (1/1) ... [2020-08-19 03:30:02,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e57099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:02, skipping insertion in model container [2020-08-19 03:30:02,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:30:02" (1/1) ... [2020-08-19 03:30:02,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:30:02,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:30:03,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:30:03,133 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:30:03,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:30:03,262 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:30:03,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03 WrapperNode [2020-08-19 03:30:03,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:30:03,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:30:03,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:30:03,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:30:03,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (1/1) ... [2020-08-19 03:30:03,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (1/1) ... [2020-08-19 03:30:03,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (1/1) ... [2020-08-19 03:30:03,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (1/1) ... [2020-08-19 03:30:03,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (1/1) ... [2020-08-19 03:30:03,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (1/1) ... [2020-08-19 03:30:03,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (1/1) ... [2020-08-19 03:30:03,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:30:03,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:30:03,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:30:03,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:30:03,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (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 03:30:03,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:30:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:30:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:30:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:30:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:30:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:30:03,438 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:30:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:30:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:30:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:30:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:30:03,439 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:30:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:30:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 03:30:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:30:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:30:03,440 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:30:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:30:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:30:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:30:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:30:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:30:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 03:30:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:30:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:30:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:30:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:30:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:30:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:30:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:30:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:30:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:30:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:30:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:30:03,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:30:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:30:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:30:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:30:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:30:03,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 03:30:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 03:30:03,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 03:30:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:30:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:30:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:30:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:30:03,445 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:30:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:30:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:30:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 03:30:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:30:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:30:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:30:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:30:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:30:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 03:30:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 03:30:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:30:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:30:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:30:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 03:30:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 03:30:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:30:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:30:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:30:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:30:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:30:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:30:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:30:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:30:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:30:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:30:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 03:30:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:30:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:30:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:30:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:30:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:30:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:30:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:30:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:30:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:30:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:30:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:30:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:30:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:30:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:30:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:30:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:30:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:30:03,452 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:30:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:30:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:30:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:30:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:30:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:30:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:30:03,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:30:04,736 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:30:04,737 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:30:04,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:30:04 BoogieIcfgContainer [2020-08-19 03:30:04,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:30:04,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:30:04,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:30:04,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:30:04,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:30:02" (1/3) ... [2020-08-19 03:30:04,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1035122e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:30:04, skipping insertion in model container [2020-08-19 03:30:04,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:30:03" (2/3) ... [2020-08-19 03:30:04,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1035122e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:30:04, skipping insertion in model container [2020-08-19 03:30:04,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:30:04" (3/3) ... [2020-08-19 03:30:04,750 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-19 03:30:04,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:30:04,769 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:30:04,782 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:30:04,809 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:30:04,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:30:04,809 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:30:04,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:30:04,810 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:30:04,810 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:30:04,810 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:30:04,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:30:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-19 03:30:04,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 03:30:04,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:04,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:04,846 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:04,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:04,852 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-19 03:30:04,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:04,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780525786] [2020-08-19 03:30:04,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,582 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:05,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:30:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:30:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 03:30:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:05,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:30:05,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780525786] [2020-08-19 03:30:05,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:05,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:30:05,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278226010] [2020-08-19 03:30:05,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:30:05,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:05,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:30:05,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:30:05,788 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-19 03:30:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:06,927 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-19 03:30:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:30:06,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 03:30:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:06,944 INFO L225 Difference]: With dead ends: 303 [2020-08-19 03:30:06,944 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 03:30:06,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:30:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 03:30:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-19 03:30:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 03:30:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-19 03:30:07,051 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-19 03:30:07,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:07,052 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-19 03:30:07,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:30:07,052 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-19 03:30:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 03:30:07,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:07,059 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:07,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:30:07,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:07,060 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-19 03:30:07,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:07,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396518152] [2020-08-19 03:30:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,450 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:07,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:30:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:30:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 03:30:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:30:07,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396518152] [2020-08-19 03:30:07,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:07,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:30:07,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153341916] [2020-08-19 03:30:07,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:30:07,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:30:07,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:30:07,513 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-19 03:30:07,987 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:08,854 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-19 03:30:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:30:08,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 03:30:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:08,860 INFO L225 Difference]: With dead ends: 248 [2020-08-19 03:30:08,860 INFO L226 Difference]: Without dead ends: 156 [2020-08-19 03:30:08,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:30:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-19 03:30:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-19 03:30:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 03:30:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-19 03:30:08,902 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-19 03:30:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:08,903 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-19 03:30:08,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:30:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-19 03:30:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 03:30:08,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:08,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:08,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:30:08,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:08,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:08,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-19 03:30:08,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:08,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100639127] [2020-08-19 03:30:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,287 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:09,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:30:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:30:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 03:30:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:30:09,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100639127] [2020-08-19 03:30:09,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:09,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:30:09,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19682428] [2020-08-19 03:30:09,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:30:09,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:09,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:30:09,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:30:09,385 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-19 03:30:09,786 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:10,124 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:10,380 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:10,631 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:11,821 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-19 03:30:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:30:11,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 03:30:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:11,824 INFO L225 Difference]: With dead ends: 257 [2020-08-19 03:30:11,824 INFO L226 Difference]: Without dead ends: 156 [2020-08-19 03:30:11,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:30:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-19 03:30:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-19 03:30:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 03:30:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-19 03:30:11,863 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-19 03:30:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:11,863 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-19 03:30:11,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:30:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-19 03:30:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 03:30:11,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:11,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:11,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:30:11,866 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:11,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:11,867 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-19 03:30:11,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:11,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6194580] [2020-08-19 03:30:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,201 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:30:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:30:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 03:30:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 03:30:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:30:12,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6194580] [2020-08-19 03:30:12,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:12,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:30:12,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360830802] [2020-08-19 03:30:12,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:30:12,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:12,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:30:12,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:30:12,309 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-19 03:30:12,707 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:14,077 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:14,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:14,630 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-19 03:30:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:30:14,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-19 03:30:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:14,635 INFO L225 Difference]: With dead ends: 356 [2020-08-19 03:30:14,635 INFO L226 Difference]: Without dead ends: 255 [2020-08-19 03:30:14,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:30:14,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-19 03:30:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-19 03:30:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-19 03:30:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-19 03:30:14,678 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-19 03:30:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:14,678 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-19 03:30:14,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:30:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-19 03:30:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-19 03:30:14,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:14,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:14,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:30:14,682 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-19 03:30:14,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:14,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790861987] [2020-08-19 03:30:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:14,989 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:30:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:30:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 03:30:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 03:30:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:30:15,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790861987] [2020-08-19 03:30:15,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:15,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:30:15,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200294433] [2020-08-19 03:30:15,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:30:15,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:15,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:30:15,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:30:15,111 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-19 03:30:15,576 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:16,230 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:16,884 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:17,193 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:17,643 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:17,872 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:18,379 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-19 03:30:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:30:18,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-19 03:30:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:18,383 INFO L225 Difference]: With dead ends: 438 [2020-08-19 03:30:18,384 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 03:30:18,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:30:18,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 03:30:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-19 03:30:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-19 03:30:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-19 03:30:18,437 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-19 03:30:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:18,437 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-19 03:30:18,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:30:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-19 03:30:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 03:30:18,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:18,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:18,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:30:18,440 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-19 03:30:18,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:18,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960134564] [2020-08-19 03:30:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,787 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:30:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:30:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 03:30:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 03:30:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:30:18,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960134564] [2020-08-19 03:30:18,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:18,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:30:18,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529375737] [2020-08-19 03:30:18,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:30:18,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:18,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:30:18,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:30:18,971 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-19 03:30:19,917 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:20,173 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:30:20,420 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:20,683 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:21,323 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-19 03:30:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:30:21,325 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-19 03:30:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:21,329 INFO L225 Difference]: With dead ends: 436 [2020-08-19 03:30:21,330 INFO L226 Difference]: Without dead ends: 253 [2020-08-19 03:30:21,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:30:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-19 03:30:21,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-19 03:30:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-19 03:30:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-19 03:30:21,390 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-19 03:30:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:21,391 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-19 03:30:21,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:30:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-19 03:30:21,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 03:30:21,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:21,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:21,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:30:21,395 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:21,396 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-19 03:30:21,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:21,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198313379] [2020-08-19 03:30:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,667 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:21,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:30:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:30:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 03:30:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 03:30:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:30:21,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198313379] [2020-08-19 03:30:21,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:21,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 03:30:21,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776366609] [2020-08-19 03:30:21,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:30:21,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:21,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:30:21,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:30:21,825 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-19 03:30:22,414 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:22,664 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:22,894 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:23,599 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:23,858 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:24,101 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:24,869 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-19 03:30:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 03:30:24,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-19 03:30:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:24,875 INFO L225 Difference]: With dead ends: 448 [2020-08-19 03:30:24,876 INFO L226 Difference]: Without dead ends: 260 [2020-08-19 03:30:24,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:30:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-19 03:30:24,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-19 03:30:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-19 03:30:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-19 03:30:24,917 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-19 03:30:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:24,918 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-19 03:30:24,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:30:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-19 03:30:24,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 03:30:24,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:24,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:24,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:30:24,920 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:24,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:24,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-19 03:30:24,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:24,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081360728] [2020-08-19 03:30:24,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,259 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:25,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:30:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 03:30:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 03:30:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 03:30:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:30:25,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081360728] [2020-08-19 03:30:25,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:25,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:30:25,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402742314] [2020-08-19 03:30:25,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:30:25,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:30:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:30:25,471 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-19 03:30:25,934 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:26,476 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:28,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:28,071 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-19 03:30:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:30:28,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-19 03:30:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:28,077 INFO L225 Difference]: With dead ends: 617 [2020-08-19 03:30:28,077 INFO L226 Difference]: Without dead ends: 425 [2020-08-19 03:30:28,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:30:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-19 03:30:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-19 03:30:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-19 03:30:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-19 03:30:28,166 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-19 03:30:28,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:28,167 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-19 03:30:28,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:30:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-19 03:30:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 03:30:28,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:28,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:28,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:30:28,169 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-19 03:30:28,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:28,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731741068] [2020-08-19 03:30:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,501 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:30:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:30:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 03:30:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 03:30:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 03:30:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:30:28,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731741068] [2020-08-19 03:30:28,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:30:28,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:30:28,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670944952] [2020-08-19 03:30:28,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:30:28,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:28,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:30:28,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:30:28,730 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-19 03:30:29,333 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:29,973 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:31,005 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:31,309 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:31,546 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:31,804 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:32,065 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:33,173 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:33,423 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:34,003 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-19 03:30:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 03:30:34,004 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-19 03:30:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:34,009 INFO L225 Difference]: With dead ends: 1065 [2020-08-19 03:30:34,010 INFO L226 Difference]: Without dead ends: 776 [2020-08-19 03:30:34,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 03:30:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-19 03:30:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-19 03:30:34,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-19 03:30:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-19 03:30:34,144 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-19 03:30:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:34,147 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-19 03:30:34,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:30:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-19 03:30:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 03:30:34,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:34,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:34,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:30:34,154 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:34,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:34,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-19 03:30:34,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:34,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573013909] [2020-08-19 03:30:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,525 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:30:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:30:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:30:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:30:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 03:30:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 03:30:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 03:30:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:30:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 03:30:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-19 03:30:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 03:30:34,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573013909] [2020-08-19 03:30:34,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:30:34,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 03:30:34,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315320434] [2020-08-19 03:30:34,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 03:30:34,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:34,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 03:30:34,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:30:34,793 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-19 03:30:35,654 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:35,981 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 03:30:36,243 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 03:30:36,499 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 03:30:37,153 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:37,450 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:38,228 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:38,559 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:30:39,401 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:39,679 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:30:39,974 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:40,264 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:40,835 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:41,204 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:41,588 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:30:42,216 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:42,482 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:30:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:43,122 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-19 03:30:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-19 03:30:43,122 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-19 03:30:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:43,128 INFO L225 Difference]: With dead ends: 1445 [2020-08-19 03:30:43,128 INFO L226 Difference]: Without dead ends: 873 [2020-08-19 03:30:43,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 03:30:43,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-19 03:30:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-19 03:30:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-19 03:30:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-19 03:30:43,292 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-19 03:30:43,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:43,295 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-19 03:30:43,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 03:30:43,295 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-19 03:30:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-19 03:30:43,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:43,302 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:43,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:30:43,302 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:43,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:43,303 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-19 03:30:43,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:43,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276956586] [2020-08-19 03:30:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,618 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:43,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:30:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:30:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:30:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:30:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:30:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:30:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:30:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:30:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 03:30:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:30:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:30:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:30:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-19 03:30:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 03:30:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-19 03:30:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 03:30:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-19 03:30:44,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276956586] [2020-08-19 03:30:44,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:30:44,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 03:30:44,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929374755] [2020-08-19 03:30:44,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 03:30:44,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:44,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 03:30:44,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:30:44,093 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-19 03:30:45,504 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:45,792 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:46,052 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:46,311 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:47,657 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:48,300 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-19 03:30:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 03:30:48,301 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-19 03:30:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:48,310 INFO L225 Difference]: With dead ends: 2078 [2020-08-19 03:30:48,310 INFO L226 Difference]: Without dead ends: 1225 [2020-08-19 03:30:48,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 03:30:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-19 03:30:48,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-19 03:30:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-19 03:30:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-19 03:30:48,486 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-19 03:30:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:48,486 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-19 03:30:48,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 03:30:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-19 03:30:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-19 03:30:48,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:48,493 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:48,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:30:48,493 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:48,494 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-19 03:30:48,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:48,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537559233] [2020-08-19 03:30:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,807 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:30:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:30:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:30:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:30:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:30:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:30:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:30:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:48,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:30:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:30:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 03:30:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:30:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:30:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:30:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-19 03:30:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 03:30:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-19 03:30:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-19 03:30:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 03:30:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-19 03:30:49,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537559233] [2020-08-19 03:30:49,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:30:49,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 03:30:49,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624020164] [2020-08-19 03:30:49,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 03:30:49,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:49,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 03:30:49,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:30:49,240 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-19 03:30:50,077 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:50,397 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:50,652 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:50,887 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 03:30:51,506 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:52,249 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:30:52,622 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:52,874 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:53,467 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:54,236 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:54,511 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:55,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:55,020 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-19 03:30:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 03:30:55,021 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-19 03:30:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:55,026 INFO L225 Difference]: With dead ends: 1968 [2020-08-19 03:30:55,027 INFO L226 Difference]: Without dead ends: 1042 [2020-08-19 03:30:55,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 03:30:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-19 03:30:55,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-19 03:30:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-19 03:30:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-19 03:30:55,242 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-19 03:30:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:55,243 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-19 03:30:55,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 03:30:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-19 03:30:55,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-19 03:30:55,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:55,254 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:55,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:30:55,254 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:55,254 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-19 03:30:55,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:55,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941201049] [2020-08-19 03:30:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,602 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:30:55,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:30:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:30:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:30:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 03:30:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:30:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:30:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 03:30:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:30:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 03:30:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:30:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:30:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 03:30:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:30:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-19 03:30:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:30:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 03:30:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:30:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 03:30:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-19 03:30:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 03:30:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:30:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 03:30:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:30:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:30:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:30:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-19 03:30:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-19 03:30:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:30:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-19 03:30:55,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941201049] [2020-08-19 03:30:55,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:30:55,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:30:55,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649773189] [2020-08-19 03:30:55,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:30:55,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:30:55,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:30:55,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:30:55,927 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-19 03:30:58,078 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 03:30:58,325 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 03:30:58,565 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:58,798 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:30:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:30:59,193 INFO L93 Difference]: Finished difference Result 1920 states and 2314 transitions. [2020-08-19 03:30:59,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:30:59,194 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-19 03:30:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:30:59,202 INFO L225 Difference]: With dead ends: 1920 [2020-08-19 03:30:59,202 INFO L226 Difference]: Without dead ends: 1034 [2020-08-19 03:30:59,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:30:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-19 03:30:59,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1009. [2020-08-19 03:30:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-08-19 03:30:59,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1195 transitions. [2020-08-19 03:30:59,376 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1195 transitions. Word has length 284 [2020-08-19 03:30:59,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:30:59,377 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1195 transitions. [2020-08-19 03:30:59,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:30:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1195 transitions. [2020-08-19 03:30:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-19 03:30:59,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:30:59,384 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:30:59,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:30:59,384 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:30:59,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:30:59,384 INFO L82 PathProgramCache]: Analyzing trace with hash -427824693, now seen corresponding path program 1 times [2020-08-19 03:30:59,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:30:59,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699028398] [2020-08-19 03:30:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:30:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat