/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:02:09,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:02:09,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:02:09,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:02:09,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:02:09,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:02:09,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:02:09,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:02:09,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:02:09,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:02:09,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:02:09,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:02:09,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:02:09,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:02:09,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:02:09,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:02:09,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:02:09,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:02:09,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:02:09,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:02:09,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:02:09,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:02:09,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:02:09,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:02:09,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:02:09,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:02:09,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:02:09,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:02:09,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:02:09,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:02:09,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:02:09,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:02:09,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:02:09,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:02:09,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:02:09,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:02:09,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:02:09,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:02:09,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:02:09,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:02:09,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:02:09,330 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 [2020-08-18 21:02:09,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:02:09,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:02:09,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:02:09,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:02:09,362 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:02:09,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:02:09,363 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:02:09,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:02:09,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:02:09,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:02:09,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:02:09,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:02:09,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:02:09,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:02:09,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:02:09,365 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:02:09,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:02:09,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:02:09,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:02:09,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:02:09,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:02:09,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:02:09,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:02:09,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:02:09,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:02:09,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:02:09,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:02:09,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:02:09,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:02:09,367 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:02:09,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:02:09,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:02:09,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:02:09,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:02:09,704 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:02:09,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-18 21:02:09,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab28a3106/9f1d27f3fab44c36881661a1ffc715d3/FLAG30ee01ce3 [2020-08-18 21:02:10,298 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:02:10,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-18 21:02:10,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab28a3106/9f1d27f3fab44c36881661a1ffc715d3/FLAG30ee01ce3 [2020-08-18 21:02:10,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab28a3106/9f1d27f3fab44c36881661a1ffc715d3 [2020-08-18 21:02:10,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:02:10,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:02:10,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:02:10,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:02:10,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:02:10,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:02:10" (1/1) ... [2020-08-18 21:02:10,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:10, skipping insertion in model container [2020-08-18 21:02:10,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:02:10" (1/1) ... [2020-08-18 21:02:10,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:02:10,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:02:11,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:02:11,156 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:02:11,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:02:11,319 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:02:11,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11 WrapperNode [2020-08-18 21:02:11,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:02:11,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:02:11,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:02:11,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:02:11,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (1/1) ... [2020-08-18 21:02:11,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (1/1) ... [2020-08-18 21:02:11,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (1/1) ... [2020-08-18 21:02:11,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (1/1) ... [2020-08-18 21:02:11,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (1/1) ... [2020-08-18 21:02:11,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (1/1) ... [2020-08-18 21:02:11,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (1/1) ... [2020-08-18 21:02:11,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:02:11,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:02:11,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:02:11,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:02:11,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (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 [2020-08-18 21:02:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:02:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:02:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:02:11,486 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:02:11,487 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:02:11,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 21:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 21:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 21:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 21:02:11,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 21:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:02:11,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:02:11,491 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:02:11,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:02:11,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:02:11,493 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 21:02:11,494 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 21:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 21:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 21:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:02:11,495 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:02:11,496 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 21:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:02:11,497 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:02:11,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:02:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:02:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:02:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:02:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:02:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:02:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:02:11,499 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:02:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:02:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:02:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:02:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:02:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:02:11,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:02:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:02:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:02:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:02:11,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:02:12,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:02:12,484 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:02:12,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:02:12 BoogieIcfgContainer [2020-08-18 21:02:12,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:02:12,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:02:12,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:02:12,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:02:12,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:02:10" (1/3) ... [2020-08-18 21:02:12,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b35d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:02:12, skipping insertion in model container [2020-08-18 21:02:12,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:11" (2/3) ... [2020-08-18 21:02:12,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b35d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:02:12, skipping insertion in model container [2020-08-18 21:02:12,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:02:12" (3/3) ... [2020-08-18 21:02:12,505 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2020-08-18 21:02:12,515 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:02:12,526 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:02:12,541 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:02:12,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:02:12,572 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:02:12,572 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:02:12,573 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:02:12,573 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:02:12,573 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:02:12,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:02:12,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:02:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-18 21:02:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 21:02:12,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:12,622 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] [2020-08-18 21:02:12,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:12,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:12,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2020-08-18 21:02:12,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:12,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606956574] [2020-08-18 21:02:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,266 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:13,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:02:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:02:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:13,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606956574] [2020-08-18 21:02:13,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:13,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:02:13,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972130823] [2020-08-18 21:02:13,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:02:13,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:13,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:02:13,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:02:13,435 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-18 21:02:14,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:14,611 INFO L93 Difference]: Finished difference Result 360 states and 456 transitions. [2020-08-18 21:02:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:02:14,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 21:02:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:14,633 INFO L225 Difference]: With dead ends: 360 [2020-08-18 21:02:14,633 INFO L226 Difference]: Without dead ends: 198 [2020-08-18 21:02:14,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:02:14,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-18 21:02:14,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-08-18 21:02:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-18 21:02:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-08-18 21:02:14,813 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2020-08-18 21:02:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:14,814 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-08-18 21:02:14,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:02:14,815 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-08-18 21:02:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 21:02:14,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:14,829 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] [2020-08-18 21:02:14,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:02:14,830 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:14,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:14,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2020-08-18 21:02:14,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:14,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969169118] [2020-08-18 21:02:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,251 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:15,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:02:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:02:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 21:02:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:15,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969169118] [2020-08-18 21:02:15,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:15,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:02:15,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570335824] [2020-08-18 21:02:15,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:02:15,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:15,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:02:15,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:02:15,313 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 5 states. [2020-08-18 21:02:15,711 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:16,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:16,735 INFO L93 Difference]: Finished difference Result 295 states and 356 transitions. [2020-08-18 21:02:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:02:16,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 21:02:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:16,742 INFO L225 Difference]: With dead ends: 295 [2020-08-18 21:02:16,742 INFO L226 Difference]: Without dead ends: 188 [2020-08-18 21:02:16,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:02:16,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-18 21:02:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 154. [2020-08-18 21:02:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 21:02:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-08-18 21:02:16,790 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2020-08-18 21:02:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:16,791 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-08-18 21:02:16,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:02:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-08-18 21:02:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 21:02:16,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:16,794 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] [2020-08-18 21:02:16,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:02:16,794 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2020-08-18 21:02:16,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:16,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214246029] [2020-08-18 21:02:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,110 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:02:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:02:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:02:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:17,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214246029] [2020-08-18 21:02:17,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:17,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:02:17,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397174905] [2020-08-18 21:02:17,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:02:17,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:17,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:02:17,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:02:17,269 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 9 states. [2020-08-18 21:02:17,634 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:17,982 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:18,223 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:18,449 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:19,409 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:21,461 INFO L93 Difference]: Finished difference Result 515 states and 629 transitions. [2020-08-18 21:02:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 21:02:21,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 21:02:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:21,469 INFO L225 Difference]: With dead ends: 515 [2020-08-18 21:02:21,469 INFO L226 Difference]: Without dead ends: 389 [2020-08-18 21:02:21,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:02:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-18 21:02:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 324. [2020-08-18 21:02:21,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-08-18 21:02:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2020-08-18 21:02:21,551 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2020-08-18 21:02:21,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:21,551 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2020-08-18 21:02:21,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:02:21,551 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2020-08-18 21:02:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 21:02:21,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:21,553 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] [2020-08-18 21:02:21,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:02:21,554 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2020-08-18 21:02:21,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:21,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854801242] [2020-08-18 21:02:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,841 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:21,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:02:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:02:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:21,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 21:02:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 21:02:22,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854801242] [2020-08-18 21:02:22,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:22,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:02:22,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922769144] [2020-08-18 21:02:22,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:02:22,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:02:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:02:22,007 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 9 states. [2020-08-18 21:02:22,496 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:23,169 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:24,145 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:24,374 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:24,677 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:24,975 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:25,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:25,863 INFO L93 Difference]: Finished difference Result 819 states and 1054 transitions. [2020-08-18 21:02:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:02:25,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 21:02:25,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:25,870 INFO L225 Difference]: With dead ends: 819 [2020-08-18 21:02:25,871 INFO L226 Difference]: Without dead ends: 523 [2020-08-18 21:02:25,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:02:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-18 21:02:25,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 455. [2020-08-18 21:02:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-08-18 21:02:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2020-08-18 21:02:25,974 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 70 [2020-08-18 21:02:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:25,974 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2020-08-18 21:02:25,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:02:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2020-08-18 21:02:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 21:02:25,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:25,977 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:25,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:02:25,978 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:25,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:25,978 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2020-08-18 21:02:25,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:25,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524551308] [2020-08-18 21:02:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,251 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:02:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:02:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 21:02:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 21:02:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:26,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524551308] [2020-08-18 21:02:26,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:26,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:02:26,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856778131] [2020-08-18 21:02:26,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:02:26,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:26,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:02:26,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:02:26,418 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 9 states. [2020-08-18 21:02:27,546 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:27,797 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:28,040 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:28,265 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:29,232 INFO L93 Difference]: Finished difference Result 975 states and 1246 transitions. [2020-08-18 21:02:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:02:29,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-18 21:02:29,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:29,238 INFO L225 Difference]: With dead ends: 975 [2020-08-18 21:02:29,238 INFO L226 Difference]: Without dead ends: 548 [2020-08-18 21:02:29,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:02:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-08-18 21:02:29,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 468. [2020-08-18 21:02:29,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-18 21:02:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-18 21:02:29,333 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2020-08-18 21:02:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:29,334 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-18 21:02:29,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:02:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-18 21:02:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 21:02:29,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:29,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:29,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:02:29,337 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:29,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2020-08-18 21:02:29,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:29,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162710126] [2020-08-18 21:02:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,597 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:02:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:02:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 21:02:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 21:02:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:29,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162710126] [2020-08-18 21:02:29,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:29,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:02:29,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540562917] [2020-08-18 21:02:29,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:02:29,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:29,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:02:29,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:02:29,749 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 11 states. [2020-08-18 21:02:30,217 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:30,452 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:30,670 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:31,444 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:31,701 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:31,970 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:32,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:32,990 INFO L93 Difference]: Finished difference Result 998 states and 1270 transitions. [2020-08-18 21:02:32,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:02:32,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-18 21:02:32,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:32,995 INFO L225 Difference]: With dead ends: 998 [2020-08-18 21:02:32,997 INFO L226 Difference]: Without dead ends: 558 [2020-08-18 21:02:33,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:02:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-08-18 21:02:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 476. [2020-08-18 21:02:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-08-18 21:02:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2020-08-18 21:02:33,108 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2020-08-18 21:02:33,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:33,111 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2020-08-18 21:02:33,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:02:33,112 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2020-08-18 21:02:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 21:02:33,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:33,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:33,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:02:33,118 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:33,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2020-08-18 21:02:33,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:33,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34779005] [2020-08-18 21:02:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,425 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:02:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 21:02:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:33,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 21:02:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 21:02:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:33,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34779005] [2020-08-18 21:02:33,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:33,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:02:33,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397944281] [2020-08-18 21:02:33,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:02:33,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:33,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:02:33,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:02:33,612 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 7 states. [2020-08-18 21:02:33,929 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:34,465 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:36,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:36,644 INFO L93 Difference]: Finished difference Result 1479 states and 1900 transitions. [2020-08-18 21:02:36,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:02:36,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-18 21:02:36,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:36,652 INFO L225 Difference]: With dead ends: 1479 [2020-08-18 21:02:36,653 INFO L226 Difference]: Without dead ends: 1031 [2020-08-18 21:02:36,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:02:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-08-18 21:02:36,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 953. [2020-08-18 21:02:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-18 21:02:36,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1151 transitions. [2020-08-18 21:02:36,862 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1151 transitions. Word has length 108 [2020-08-18 21:02:36,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:36,863 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1151 transitions. [2020-08-18 21:02:36,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:02:36,864 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1151 transitions. [2020-08-18 21:02:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 21:02:36,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:36,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:36,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:02:36,868 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:36,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:36,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2020-08-18 21:02:36,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:36,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125738416] [2020-08-18 21:02:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,230 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:37,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 21:02:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 21:02:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 21:02:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 21:02:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 21:02:37,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125738416] [2020-08-18 21:02:37,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:37,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:02:37,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849725478] [2020-08-18 21:02:37,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:02:37,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:37,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:02:37,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:02:37,503 INFO L87 Difference]: Start difference. First operand 953 states and 1151 transitions. Second operand 12 states. [2020-08-18 21:02:37,977 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:38,627 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:39,325 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:39,641 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:39,888 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:40,201 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:40,462 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:42,507 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:42,807 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:43,426 INFO L93 Difference]: Finished difference Result 2713 states and 3488 transitions. [2020-08-18 21:02:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 21:02:43,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-18 21:02:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:43,438 INFO L225 Difference]: With dead ends: 2713 [2020-08-18 21:02:43,438 INFO L226 Difference]: Without dead ends: 1980 [2020-08-18 21:02:43,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 21:02:43,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-18 21:02:43,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1674. [2020-08-18 21:02:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-08-18 21:02:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2008 transitions. [2020-08-18 21:02:43,799 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2008 transitions. Word has length 112 [2020-08-18 21:02:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:43,803 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 2008 transitions. [2020-08-18 21:02:43,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:02:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2008 transitions. [2020-08-18 21:02:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-18 21:02:43,807 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:43,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:43,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:02:43,809 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:43,809 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2020-08-18 21:02:43,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:43,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744093635] [2020-08-18 21:02:43,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,159 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:02:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:02:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 21:02:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 21:02:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-18 21:02:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-18 21:02:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:02:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-18 21:02:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 21:02:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 21:02:44,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744093635] [2020-08-18 21:02:44,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:02:44,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:02:44,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969893129] [2020-08-18 21:02:44,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:02:44,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:44,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:02:44,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:02:44,472 INFO L87 Difference]: Start difference. First operand 1674 states and 2008 transitions. Second operand 16 states. [2020-08-18 21:02:45,004 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:45,444 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:02:45,807 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:02:46,154 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:02:46,822 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:47,122 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:47,464 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:47,744 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:49,027 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:49,637 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:49,909 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:50,216 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:50,810 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:51,217 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:51,617 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:52,449 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:52,791 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:53,675 INFO L93 Difference]: Finished difference Result 3619 states and 4470 transitions. [2020-08-18 21:02:53,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 21:02:53,676 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-18 21:02:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:53,699 INFO L225 Difference]: With dead ends: 3619 [2020-08-18 21:02:53,699 INFO L226 Difference]: Without dead ends: 2153 [2020-08-18 21:02:53,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 21:02:53,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-08-18 21:02:54,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1961. [2020-08-18 21:02:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-08-18 21:02:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2310 transitions. [2020-08-18 21:02:54,186 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2310 transitions. Word has length 174 [2020-08-18 21:02:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:54,186 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2310 transitions. [2020-08-18 21:02:54,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 21:02:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2310 transitions. [2020-08-18 21:02:54,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-18 21:02:54,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:54,200 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, 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, 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] [2020-08-18 21:02:54,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:02:54,201 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:54,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:54,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1190190750, now seen corresponding path program 1 times [2020-08-18 21:02:54,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:54,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151166310] [2020-08-18 21:02:54,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,489 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:54,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:02:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:02:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 21:02:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 21:02:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:02:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:02:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:02:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-18 21:02:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:02:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:02:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:02:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-18 21:02:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 21:02:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-18 21:02:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-18 21:02:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-18 21:02:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 82 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-18 21:02:54,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151166310] [2020-08-18 21:02:54,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:02:54,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:02:54,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082058467] [2020-08-18 21:02:54,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:02:54,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:02:54,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:02:54,964 INFO L87 Difference]: Start difference. First operand 1961 states and 2310 transitions. Second operand 15 states. [2020-08-18 21:02:56,495 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:56,813 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:57,059 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:57,311 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:57,565 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:58,570 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:59,123 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 21:02:59,636 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 21:03:00,123 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:03:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:03:03,144 INFO L93 Difference]: Finished difference Result 5471 states and 6670 transitions. [2020-08-18 21:03:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 21:03:03,145 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-18 21:03:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:03:03,167 INFO L225 Difference]: With dead ends: 5471 [2020-08-18 21:03:03,167 INFO L226 Difference]: Without dead ends: 3307 [2020-08-18 21:03:03,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 21:03:03,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-08-18 21:03:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2847. [2020-08-18 21:03:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-08-18 21:03:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3387 transitions. [2020-08-18 21:03:03,782 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3387 transitions. Word has length 311 [2020-08-18 21:03:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:03:03,783 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3387 transitions. [2020-08-18 21:03:03,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:03:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3387 transitions. [2020-08-18 21:03:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-18 21:03:03,795 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:03,795 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:03:03,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:03:03,796 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:03,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:03,796 INFO L82 PathProgramCache]: Analyzing trace with hash -547150695, now seen corresponding path program 1 times [2020-08-18 21:03:03,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:03,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633675160] [2020-08-18 21:03:03,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,246 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:03:04,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:03:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:03:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:03:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:03:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:03:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:03:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:03:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:03:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:03:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 21:03:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 21:03:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:03:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:03:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:03:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:03:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-18 21:03:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:03:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:03:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:03:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-18 21:03:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-18 21:03:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-18 21:03:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:03:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:03:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-18 21:03:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-18 21:03:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-18 21:03:04,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633675160] [2020-08-18 21:03:04,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:03:04,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:03:04,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989796000] [2020-08-18 21:03:04,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:03:04,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:03:04,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:03:04,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:03:04,718 INFO L87 Difference]: Start difference. First operand 2847 states and 3387 transitions. Second operand 16 states. [2020-08-18 21:03:05,453 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:03:05,918 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:03:06,192 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:03:06,422 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:03:07,127 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191