/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:04:12,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:04:12,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:04:12,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:04:12,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:04:12,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:04:12,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:04:12,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:04:12,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:04:12,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:04:12,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:04:12,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:04:12,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:04:12,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:04:12,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:04:12,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:04:12,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:04:12,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:04:12,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:04:12,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:04:12,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:04:12,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:04:12,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:04:12,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:04:12,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:04:12,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:04:12,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:04:12,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:04:12,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:04:12,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:04:12,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:04:12,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:04:12,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:04:12,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:04:12,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:04:12,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:04:12,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:04:12,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:04:12,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:04:12,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:04:12,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:04:12,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:04:12,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:04:12,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:04:12,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:04:12,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:04:12,311 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:04:12,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:04:12,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:04:12,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:04:12,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:04:12,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:04:12,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:04:12,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:04:12,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:04:12,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:04:12,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:04:12,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:04:12,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:04:12,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:04:12,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:04:12,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:04:12,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:04:12,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:04:12,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:04:12,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:04:12,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:04:12,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:04:12,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:04:12,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:04:12,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:04:12,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:04:12,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:04:12,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:04:12,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:04:12,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:04:12,645 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:04:12,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-08-19 01:04:12,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4b47cd13/3cab4ac66e924da78f7697a36683d763/FLAG5c8e56231 [2020-08-19 01:04:13,209 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:04:13,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product50.cil.c [2020-08-19 01:04:13,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4b47cd13/3cab4ac66e924da78f7697a36683d763/FLAG5c8e56231 [2020-08-19 01:04:13,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a4b47cd13/3cab4ac66e924da78f7697a36683d763 [2020-08-19 01:04:13,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:04:13,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:04:13,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:04:13,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:04:13,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:04:13,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:04:13" (1/1) ... [2020-08-19 01:04:13,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afe831a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:13, skipping insertion in model container [2020-08-19 01:04:13,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:04:13" (1/1) ... [2020-08-19 01:04:13,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:04:13,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:04:14,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:04:14,100 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:04:14,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:04:14,270 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:04:14,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14 WrapperNode [2020-08-19 01:04:14,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:04:14,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:04:14,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:04:14,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:04:14,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (1/1) ... [2020-08-19 01:04:14,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (1/1) ... [2020-08-19 01:04:14,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (1/1) ... [2020-08-19 01:04:14,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (1/1) ... [2020-08-19 01:04:14,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (1/1) ... [2020-08-19 01:04:14,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (1/1) ... [2020-08-19 01:04:14,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (1/1) ... [2020-08-19 01:04:14,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:04:14,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:04:14,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:04:14,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:04:14,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:04:14,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:04:14,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:04:14,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:04:14,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:04:14,429 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:04:14,429 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:04:14,430 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:04:14,430 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:04:14,430 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:04:14,431 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:04:14,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:04:14,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:04:14,431 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:04:14,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:04:14,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 01:04:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:04:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:04:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:04:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:04:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:04:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:04:14,434 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:04:14,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:04:14,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:04:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 01:04:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:04:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:04:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:04:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:04:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:04:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:04:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:04:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:04:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:04:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:04:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:04:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:04:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:04:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:04:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:04:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:04:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:04:14,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:04:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:04:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:04:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:04:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:04:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:04:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:04:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:04:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:04:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 01:04:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:04:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:04:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:04:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:04:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:04:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:04:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 01:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 01:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:04:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 01:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:04:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:04:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:04:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:04:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:04:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:04:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:04:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:04:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:04:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:04:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:04:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:04:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:04:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:04:14,451 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:04:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:04:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:04:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:04:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:04:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:04:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:04:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:04:15,503 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:04:15,503 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:04:15,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:04:15 BoogieIcfgContainer [2020-08-19 01:04:15,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:04:15,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:04:15,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:04:15,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:04:15,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:04:13" (1/3) ... [2020-08-19 01:04:15,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ddae19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:04:15, skipping insertion in model container [2020-08-19 01:04:15,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:04:14" (2/3) ... [2020-08-19 01:04:15,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ddae19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:04:15, skipping insertion in model container [2020-08-19 01:04:15,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:04:15" (3/3) ... [2020-08-19 01:04:15,517 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product50.cil.c [2020-08-19 01:04:15,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:04:15,535 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:04:15,549 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:04:15,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:04:15,575 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:04:15,575 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:04:15,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:04:15,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:04:15,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:04:15,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:04:15,576 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:04:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2020-08-19 01:04:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:04:15,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:15,612 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 01:04:15,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:15,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2053229239, now seen corresponding path program 1 times [2020-08-19 01:04:15,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:15,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942550704] [2020-08-19 01:04:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,305 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:04:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:04:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:16,412 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 01:04:16,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942550704] [2020-08-19 01:04:16,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:16,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:04:16,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241329766] [2020-08-19 01:04:16,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:04:16,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:16,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:04:16,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:04:16,439 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2020-08-19 01:04:17,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:17,555 INFO L93 Difference]: Finished difference Result 313 states and 401 transitions. [2020-08-19 01:04:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:04:17,558 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:04:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:17,575 INFO L225 Difference]: With dead ends: 313 [2020-08-19 01:04:17,575 INFO L226 Difference]: Without dead ends: 172 [2020-08-19 01:04:17,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:04:17,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-19 01:04:17,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-08-19 01:04:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-08-19 01:04:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2020-08-19 01:04:17,684 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 59 [2020-08-19 01:04:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:17,684 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2020-08-19 01:04:17,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:04:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2020-08-19 01:04:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:04:17,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:17,692 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 01:04:17,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:04:17,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:17,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1701396789, now seen corresponding path program 1 times [2020-08-19 01:04:17,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:17,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279156388] [2020-08-19 01:04:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,111 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:18,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:04:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:04:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:04:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:18,174 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 01:04:18,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279156388] [2020-08-19 01:04:18,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:18,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:04:18,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361143655] [2020-08-19 01:04:18,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:04:18,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:18,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:04:18,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:04:18,178 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 5 states. [2020-08-19 01:04:18,634 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:19,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:19,582 INFO L93 Difference]: Finished difference Result 254 states and 309 transitions. [2020-08-19 01:04:19,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:04:19,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 01:04:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:19,586 INFO L225 Difference]: With dead ends: 254 [2020-08-19 01:04:19,587 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 01:04:19,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:04:19,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 01:04:19,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-19 01:04:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 01:04:19,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 154 transitions. [2020-08-19 01:04:19,631 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 154 transitions. Word has length 60 [2020-08-19 01:04:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:19,631 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 154 transitions. [2020-08-19 01:04:19,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:04:19,631 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 154 transitions. [2020-08-19 01:04:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 01:04:19,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:19,634 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] [2020-08-19 01:04:19,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:04:19,634 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash -835538636, now seen corresponding path program 1 times [2020-08-19 01:04:19,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:19,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201449321] [2020-08-19 01:04:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:19,953 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:19,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 01:04:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 01:04:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:20,067 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 01:04:20,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201449321] [2020-08-19 01:04:20,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:20,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:20,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381678046] [2020-08-19 01:04:20,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:20,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:20,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:20,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:20,070 INFO L87 Difference]: Start difference. First operand 133 states and 154 transitions. Second operand 9 states. [2020-08-19 01:04:20,451 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:20,748 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:21,016 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:21,296 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:22,668 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-19 01:04:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:04:22,670 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 01:04:22,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:22,676 INFO L225 Difference]: With dead ends: 267 [2020-08-19 01:04:22,678 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 01:04:22,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 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 01:04:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 01:04:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2020-08-19 01:04:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 01:04:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 153 transitions. [2020-08-19 01:04:22,770 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 153 transitions. Word has length 65 [2020-08-19 01:04:22,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:22,771 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 153 transitions. [2020-08-19 01:04:22,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 153 transitions. [2020-08-19 01:04:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 01:04:22,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:22,777 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] [2020-08-19 01:04:22,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:04:22,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:22,777 INFO L82 PathProgramCache]: Analyzing trace with hash -192684169, now seen corresponding path program 1 times [2020-08-19 01:04:22,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:22,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996001236] [2020-08-19 01:04:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,151 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 01:04:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 01:04:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:23,257 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 01:04:23,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996001236] [2020-08-19 01:04:23,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:23,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:04:23,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410965411] [2020-08-19 01:04:23,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:04:23,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:23,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:04:23,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:04:23,260 INFO L87 Difference]: Start difference. First operand 133 states and 153 transitions. Second operand 7 states. [2020-08-19 01:04:23,653 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:25,199 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:25,790 INFO L93 Difference]: Finished difference Result 371 states and 462 transitions. [2020-08-19 01:04:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:04:25,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-19 01:04:25,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:25,794 INFO L225 Difference]: With dead ends: 371 [2020-08-19 01:04:25,795 INFO L226 Difference]: Without dead ends: 266 [2020-08-19 01:04:25,796 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 01:04:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-19 01:04:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 220. [2020-08-19 01:04:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-19 01:04:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 252 transitions. [2020-08-19 01:04:25,857 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 252 transitions. Word has length 78 [2020-08-19 01:04:25,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:25,858 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 252 transitions. [2020-08-19 01:04:25,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:04:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 252 transitions. [2020-08-19 01:04:25,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:04:25,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:25,860 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 01:04:25,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:04:25,860 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1827957124, now seen corresponding path program 1 times [2020-08-19 01:04:25,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:25,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376066812] [2020-08-19 01:04:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,121 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:04:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:04:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:26,308 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 01:04:26,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376066812] [2020-08-19 01:04:26,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:26,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:04:26,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576175366] [2020-08-19 01:04:26,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:04:26,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:26,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:04:26,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:04:26,310 INFO L87 Difference]: Start difference. First operand 220 states and 252 transitions. Second operand 12 states. [2020-08-19 01:04:26,838 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:27,124 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:27,374 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:28,202 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:28,463 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:28,730 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:28,993 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:29,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:29,926 INFO L93 Difference]: Finished difference Result 457 states and 556 transitions. [2020-08-19 01:04:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:04:29,929 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-08-19 01:04:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:29,931 INFO L225 Difference]: With dead ends: 457 [2020-08-19 01:04:29,932 INFO L226 Difference]: Without dead ends: 265 [2020-08-19 01:04:29,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 01:04:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-08-19 01:04:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 225. [2020-08-19 01:04:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-19 01:04:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 257 transitions. [2020-08-19 01:04:29,983 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 257 transitions. Word has length 92 [2020-08-19 01:04:29,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:29,983 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 257 transitions. [2020-08-19 01:04:29,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:04:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 257 transitions. [2020-08-19 01:04:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 01:04:29,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:29,985 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 01:04:29,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:04:29,985 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:29,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:29,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1850589378, now seen corresponding path program 1 times [2020-08-19 01:04:29,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:29,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099541419] [2020-08-19 01:04:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,328 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:30,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 01:04:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 01:04:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:30,466 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 01:04:30,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099541419] [2020-08-19 01:04:30,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:30,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:30,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193542930] [2020-08-19 01:04:30,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:30,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:30,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:30,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:30,469 INFO L87 Difference]: Start difference. First operand 225 states and 257 transitions. Second operand 9 states. [2020-08-19 01:04:30,869 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:31,504 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:32,200 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:32,517 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:32,982 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:33,201 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:33,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:33,787 INFO L93 Difference]: Finished difference Result 467 states and 566 transitions. [2020-08-19 01:04:33,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:04:33,788 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-19 01:04:33,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:33,792 INFO L225 Difference]: With dead ends: 467 [2020-08-19 01:04:33,792 INFO L226 Difference]: Without dead ends: 270 [2020-08-19 01:04:33,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:04:33,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-19 01:04:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 224. [2020-08-19 01:04:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-19 01:04:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 254 transitions. [2020-08-19 01:04:33,833 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 254 transitions. Word has length 92 [2020-08-19 01:04:33,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:33,834 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 254 transitions. [2020-08-19 01:04:33,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:33,834 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 254 transitions. [2020-08-19 01:04:33,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:04:33,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:33,838 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] [2020-08-19 01:04:33,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:04:33,840 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:33,840 INFO L82 PathProgramCache]: Analyzing trace with hash 516367047, now seen corresponding path program 1 times [2020-08-19 01:04:33,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:33,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444079537] [2020-08-19 01:04:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,169 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:04:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:04:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:34,304 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 01:04:34,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444079537] [2020-08-19 01:04:34,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:34,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:04:34,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641012236] [2020-08-19 01:04:34,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:04:34,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:34,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:04:34,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:04:34,312 INFO L87 Difference]: Start difference. First operand 224 states and 254 transitions. Second operand 11 states. [2020-08-19 01:04:34,826 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:35,068 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:35,289 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:36,046 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:36,290 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:36,523 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:37,252 INFO L93 Difference]: Finished difference Result 467 states and 563 transitions. [2020-08-19 01:04:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:04:37,252 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-19 01:04:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:37,255 INFO L225 Difference]: With dead ends: 467 [2020-08-19 01:04:37,255 INFO L226 Difference]: Without dead ends: 271 [2020-08-19 01:04:37,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:04:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-19 01:04:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 228. [2020-08-19 01:04:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-19 01:04:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 258 transitions. [2020-08-19 01:04:37,301 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 258 transitions. Word has length 93 [2020-08-19 01:04:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:37,301 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 258 transitions. [2020-08-19 01:04:37,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:04:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 258 transitions. [2020-08-19 01:04:37,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:04:37,303 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:37,303 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] [2020-08-19 01:04:37,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:04:37,304 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:37,304 INFO L82 PathProgramCache]: Analyzing trace with hash -185232827, now seen corresponding path program 1 times [2020-08-19 01:04:37,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:37,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459355492] [2020-08-19 01:04:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,649 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:37,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:04:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:04:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:37,826 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 01:04:37,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459355492] [2020-08-19 01:04:37,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:37,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:04:37,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539923668] [2020-08-19 01:04:37,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:04:37,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:37,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:04:37,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:04:37,830 INFO L87 Difference]: Start difference. First operand 228 states and 258 transitions. Second operand 9 states. [2020-08-19 01:04:39,053 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:39,298 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:39,536 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:39,779 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:40,529 INFO L93 Difference]: Finished difference Result 468 states and 562 transitions. [2020-08-19 01:04:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:04:40,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-19 01:04:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:40,532 INFO L225 Difference]: With dead ends: 468 [2020-08-19 01:04:40,532 INFO L226 Difference]: Without dead ends: 268 [2020-08-19 01:04:40,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:04:40,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-08-19 01:04:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2020-08-19 01:04:40,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-08-19 01:04:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 257 transitions. [2020-08-19 01:04:40,591 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 257 transitions. Word has length 93 [2020-08-19 01:04:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:40,593 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 257 transitions. [2020-08-19 01:04:40,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:04:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 257 transitions. [2020-08-19 01:04:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 01:04:40,595 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:40,595 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] [2020-08-19 01:04:40,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:04:40,595 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:40,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:40,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2053119352, now seen corresponding path program 1 times [2020-08-19 01:04:40,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:40,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034928585] [2020-08-19 01:04:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,874 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 01:04:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:41,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 01:04:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:04:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:41,030 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 01:04:41,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034928585] [2020-08-19 01:04:41,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:41,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 01:04:41,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252862244] [2020-08-19 01:04:41,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:04:41,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:41,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:04:41,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:04:41,034 INFO L87 Difference]: Start difference. First operand 228 states and 257 transitions. Second operand 7 states. [2020-08-19 01:04:41,533 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:42,254 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:43,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:43,769 INFO L93 Difference]: Finished difference Result 649 states and 806 transitions. [2020-08-19 01:04:43,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:04:43,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-19 01:04:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:43,775 INFO L225 Difference]: With dead ends: 649 [2020-08-19 01:04:43,775 INFO L226 Difference]: Without dead ends: 449 [2020-08-19 01:04:43,776 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 01:04:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-19 01:04:43,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 407. [2020-08-19 01:04:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-19 01:04:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 473 transitions. [2020-08-19 01:04:43,852 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 473 transitions. Word has length 93 [2020-08-19 01:04:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:43,852 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 473 transitions. [2020-08-19 01:04:43,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:04:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 473 transitions. [2020-08-19 01:04:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 01:04:43,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:43,854 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, 1] [2020-08-19 01:04:43,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:04:43,854 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:43,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:43,855 INFO L82 PathProgramCache]: Analyzing trace with hash 868259694, now seen corresponding path program 1 times [2020-08-19 01:04:43,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:43,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910330556] [2020-08-19 01:04:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,166 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:44,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:04:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 01:04:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 01:04:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 01:04:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:44,328 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 01:04:44,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910330556] [2020-08-19 01:04:44,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:04:44,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:04:44,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445198581] [2020-08-19 01:04:44,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:04:44,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:44,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:04:44,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:04:44,330 INFO L87 Difference]: Start difference. First operand 407 states and 473 transitions. Second operand 12 states. [2020-08-19 01:04:44,740 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:45,367 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:46,397 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:46,722 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:46,998 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:47,264 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:47,556 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:48,937 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:49,204 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:49,974 INFO L93 Difference]: Finished difference Result 1129 states and 1396 transitions. [2020-08-19 01:04:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 01:04:49,983 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-19 01:04:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:49,990 INFO L225 Difference]: With dead ends: 1129 [2020-08-19 01:04:49,990 INFO L226 Difference]: Without dead ends: 824 [2020-08-19 01:04:49,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 01:04:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-19 01:04:50,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 702. [2020-08-19 01:04:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-08-19 01:04:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 808 transitions. [2020-08-19 01:04:50,138 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 808 transitions. Word has length 97 [2020-08-19 01:04:50,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:50,138 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 808 transitions. [2020-08-19 01:04:50,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:04:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 808 transitions. [2020-08-19 01:04:50,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-19 01:04:50,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:50,142 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, 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 01:04:50,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:04:50,142 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:50,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:50,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1063606964, now seen corresponding path program 1 times [2020-08-19 01:04:50,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:50,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46811411] [2020-08-19 01:04:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,538 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:50,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:04:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-19 01:04:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 01:04:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 01:04:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-19 01:04:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 01:04:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 01:04:50,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46811411] [2020-08-19 01:04:50,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:50,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:04:50,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475061013] [2020-08-19 01:04:50,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:04:50,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:50,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:04:50,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:04:50,870 INFO L87 Difference]: Start difference. First operand 702 states and 808 transitions. Second operand 16 states. [2020-08-19 01:04:51,474 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:51,794 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:04:52,081 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:04:52,327 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 01:04:52,958 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:53,226 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:53,953 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:04:54,283 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:55,142 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:55,404 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:55,668 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:04:55,991 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:56,547 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:04:56,969 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:57,320 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:57,904 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:04:58,168 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 01:04:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:04:58,686 INFO L93 Difference]: Finished difference Result 1547 states and 1835 transitions. [2020-08-19 01:04:58,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-19 01:04:58,687 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-19 01:04:58,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:04:58,694 INFO L225 Difference]: With dead ends: 1547 [2020-08-19 01:04:58,694 INFO L226 Difference]: Without dead ends: 943 [2020-08-19 01:04:58,699 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 01:04:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-08-19 01:04:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 850. [2020-08-19 01:04:58,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-19 01:04:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-19 01:04:58,864 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 159 [2020-08-19 01:04:58,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:04:58,865 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-19 01:04:58,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:04:58,865 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-19 01:04:58,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-19 01:04:58,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:04:58,871 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, 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 01:04:58,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:04:58,872 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:04:58,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:04:58,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1141492594, now seen corresponding path program 1 times [2020-08-19 01:04:58,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:04:58,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529606925] [2020-08-19 01:04:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:04:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,163 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:04:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:04:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:04:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:04:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:04:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:04:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:04:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:04:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:04:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:04:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:04:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-19 01:04:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:04:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:04:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:04:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:04:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 01:04:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:04:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-19 01:04:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:04:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:04:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:04:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-19 01:04:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-19 01:04:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:04:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-19 01:04:59,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529606925] [2020-08-19 01:04:59,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:04:59,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:04:59,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835795524] [2020-08-19 01:04:59,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:04:59,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:04:59,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:04:59,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:04:59,741 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 15 states. [2020-08-19 01:05:01,197 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:05:01,471 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:01,749 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:01,994 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:03,582 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:04,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:05:04,339 INFO L93 Difference]: Finished difference Result 2242 states and 2707 transitions. [2020-08-19 01:05:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:05:04,340 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-19 01:05:04,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:05:04,348 INFO L225 Difference]: With dead ends: 2242 [2020-08-19 01:05:04,348 INFO L226 Difference]: Without dead ends: 1325 [2020-08-19 01:05:04,352 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 01:05:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2020-08-19 01:05:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1123. [2020-08-19 01:05:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-19 01:05:04,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1332 transitions. [2020-08-19 01:05:04,618 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1332 transitions. Word has length 277 [2020-08-19 01:05:04,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:05:04,619 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1332 transitions. [2020-08-19 01:05:04,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:05:04,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1332 transitions. [2020-08-19 01:05:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-19 01:05:04,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:05:04,631 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, 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] [2020-08-19 01:05:04,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:05:04,631 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:05:04,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:05:04,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1975666707, now seen corresponding path program 1 times [2020-08-19 01:05:04,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:05:04,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061848770] [2020-08-19 01:05:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:05:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:04,987 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:05:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:05:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:05:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:05:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:05:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:05:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:05:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:05:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:05:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:05:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:05:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:05:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:05:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-19 01:05:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:05:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:05:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 01:05:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-19 01:05:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-19 01:05:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 01:05:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-19 01:05:05,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061848770] [2020-08-19 01:05:05,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:05:05,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:05:05,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346090373] [2020-08-19 01:05:05,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:05:05,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:05:05,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:05:05,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:05:05,426 INFO L87 Difference]: Start difference. First operand 1123 states and 1332 transitions. Second operand 16 states. [2020-08-19 01:05:06,150 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:06,520 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:06,841 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:07,072 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 01:05:07,777 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:08,550 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:05:08,892 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:09,155 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:09,745 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:10,515 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:10,761 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:05:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:05:11,294 INFO L93 Difference]: Finished difference Result 2127 states and 2561 transitions. [2020-08-19 01:05:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 01:05:11,298 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-19 01:05:11,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:05:11,306 INFO L225 Difference]: With dead ends: 2127 [2020-08-19 01:05:11,306 INFO L226 Difference]: Without dead ends: 1125 [2020-08-19 01:05:11,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 01:05:11,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-19 01:05:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1075. [2020-08-19 01:05:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-08-19 01:05:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1258 transitions. [2020-08-19 01:05:11,545 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1258 transitions. Word has length 283 [2020-08-19 01:05:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:05:11,545 INFO L479 AbstractCegarLoop]: Abstraction has 1075 states and 1258 transitions. [2020-08-19 01:05:11,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:05:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1258 transitions. [2020-08-19 01:05:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-08-19 01:05:11,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:05:11,554 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, 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 01:05:11,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:05:11,555 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:05:11,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:05:11,555 INFO L82 PathProgramCache]: Analyzing trace with hash 748030073, now seen corresponding path program 1 times [2020-08-19 01:05:11,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:05:11,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26937164] [2020-08-19 01:05:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:05:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,869 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:05:11,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:05:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:05:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:05:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:05:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:05:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 01:05:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 01:05:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:05:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:05:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:05:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:05:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:05:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 01:05:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:11,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:05:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:05:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 01:05:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 01:05:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-08-19 01:05:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-19 01:05:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:05:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-19 01:05:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:05:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:05:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:05:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-19 01:05:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-08-19 01:05:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:05:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-08-19 01:05:12,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26937164] [2020-08-19 01:05:12,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:05:12,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:05:12,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126866472] [2020-08-19 01:05:12,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:05:12,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:05:12,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:05:12,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:05:12,159 INFO L87 Difference]: Start difference. First operand 1075 states and 1258 transitions. Second operand 11 states.