/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:45:57,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:45:57,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:45:57,263 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:45:57,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:45:57,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:45:57,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:45:57,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:45:57,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:45:57,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:45:57,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:45:57,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:45:57,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:45:57,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:45:57,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:45:57,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:45:57,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:45:57,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:45:57,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:45:57,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:45:57,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:45:57,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:45:57,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:45:57,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:45:57,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:45:57,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:45:57,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:45:57,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:45:57,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:45:57,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:45:57,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:45:57,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:45:57,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:45:57,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:45:57,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:45:57,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:45:57,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:45:57,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:45:57,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:45:57,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:45:57,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:45:57,301 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 [2020-08-21 14:45:57,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:45:57,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:45:57,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:45:57,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:45:57,328 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:45:57,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:45:57,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:45:57,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:45:57,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:45:57,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:45:57,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:45:57,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:45:57,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:45:57,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:45:57,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:45:57,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:45:57,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:45:57,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:45:57,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:45:57,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:45:57,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:45:57,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:45:57,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:45:57,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:45:57,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:45:57,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:45:57,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:45:57,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:45:57,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:45:57,333 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:45:57,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:45:57,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:45:57,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:45:57,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:45:57,652 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:45:57,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-21 14:45:57,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/304df0b63/674df9f90bc04215a9d488465fc6e885/FLAG6216a1d58 [2020-08-21 14:45:58,256 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:45:58,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-21 14:45:58,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/304df0b63/674df9f90bc04215a9d488465fc6e885/FLAG6216a1d58 [2020-08-21 14:45:58,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/304df0b63/674df9f90bc04215a9d488465fc6e885 [2020-08-21 14:45:58,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:45:58,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:45:58,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:45:58,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:45:58,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:45:58,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:45:58" (1/1) ... [2020-08-21 14:45:58,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585e7761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:58, skipping insertion in model container [2020-08-21 14:45:58,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:45:58" (1/1) ... [2020-08-21 14:45:58,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:45:58,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:45:59,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:45:59,125 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:45:59,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:45:59,266 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:45:59,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59 WrapperNode [2020-08-21 14:45:59,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:45:59,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:45:59,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:45:59,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:45:59,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (1/1) ... [2020-08-21 14:45:59,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (1/1) ... [2020-08-21 14:45:59,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (1/1) ... [2020-08-21 14:45:59,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (1/1) ... [2020-08-21 14:45:59,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (1/1) ... [2020-08-21 14:45:59,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (1/1) ... [2020-08-21 14:45:59,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (1/1) ... [2020-08-21 14:45:59,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:45:59,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:45:59,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:45:59,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:45:59,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (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 [2020-08-21 14:45:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:45:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:45:59,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:45:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:45:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:45:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:45:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:45:59,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:45:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:45:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:45:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 14:45:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:45:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:45:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:45:59,418 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:45:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:45:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:45:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:45:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:45:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:45:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:45:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:45:59,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:45:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:45:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:45:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:45:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:45:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:45:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:45:59,420 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:45:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:45:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:45:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 14:45:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:45:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:45:59,421 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:45:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:45:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:45:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:45:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:45:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 14:45:59,422 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:45:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:45:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:45:59,422 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:45:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:45:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:45:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:45:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:45:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:45:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:45:59,423 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:45:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 14:45:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:45:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:45:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:45:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:45:59,424 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:45:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:45:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:45:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:45:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:45:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:45:59,425 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:45:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:45:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:45:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:45:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:45:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:45:59,426 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:45:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:45:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:45:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:45:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:45:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:45:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:45:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:45:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:45:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:45:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:45:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:45:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:45:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:45:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:45:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:45:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:45:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:45:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:45:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:45:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:45:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:45:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:45:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 14:45:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 14:45:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:45:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:45:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:45:59,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:46:00,438 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:46:00,439 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:46:00,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:46:00 BoogieIcfgContainer [2020-08-21 14:46:00,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:46:00,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:46:00,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:46:00,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:46:00,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:45:58" (1/3) ... [2020-08-21 14:46:00,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d16503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:46:00, skipping insertion in model container [2020-08-21 14:46:00,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:45:59" (2/3) ... [2020-08-21 14:46:00,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d16503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:46:00, skipping insertion in model container [2020-08-21 14:46:00,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:46:00" (3/3) ... [2020-08-21 14:46:00,453 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-21 14:46:00,465 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:46:00,473 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:46:00,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:46:00,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:46:00,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:46:00,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:46:00,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:46:00,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:46:00,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:46:00,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:46:00,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:46:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-21 14:46:00,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 14:46:00,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:00,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:00,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:00,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-21 14:46:00,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:00,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562234622] [2020-08-21 14:46:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,285 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:46:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:46:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:46:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:01,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562234622] [2020-08-21 14:46:01,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:01,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:46:01,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715791132] [2020-08-21 14:46:01,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:46:01,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:01,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:46:01,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:46:01,399 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-21 14:46:02,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:02,682 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-21 14:46:02,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:46:02,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 14:46:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:02,699 INFO L225 Difference]: With dead ends: 350 [2020-08-21 14:46:02,699 INFO L226 Difference]: Without dead ends: 188 [2020-08-21 14:46:02,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:46:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-21 14:46:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-21 14:46:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 14:46:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-21 14:46:02,828 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-21 14:46:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:02,828 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-21 14:46:02,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:46:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-21 14:46:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 14:46:02,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:02,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:02,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:46:02,840 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:02,840 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-21 14:46:02,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:02,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990252768] [2020-08-21 14:46:02,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,239 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:03,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:46:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:46:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:46:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:03,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990252768] [2020-08-21 14:46:03,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:03,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:46:03,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185054209] [2020-08-21 14:46:03,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:46:03,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:03,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:46:03,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:46:03,293 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-21 14:46:03,737 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:04,836 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-21 14:46:04,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:46:04,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 14:46:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:04,840 INFO L225 Difference]: With dead ends: 279 [2020-08-21 14:46:04,841 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 14:46:04,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:46:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 14:46:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-21 14:46:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-21 14:46:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-21 14:46:04,890 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-21 14:46:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:04,890 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-21 14:46:04,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:46:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-21 14:46:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 14:46:04,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:04,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:04,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:46:04,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:04,894 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-21 14:46:04,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:04,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632362341] [2020-08-21 14:46:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,206 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:05,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:46:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:46:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:46:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:05,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632362341] [2020-08-21 14:46:05,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:05,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:46:05,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183065469] [2020-08-21 14:46:05,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:46:05,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:05,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:46:05,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:46:05,313 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-21 14:46:05,674 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:05,991 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:06,234 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:06,471 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:07,969 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-21 14:46:07,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 14:46:07,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 14:46:07,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:07,974 INFO L225 Difference]: With dead ends: 292 [2020-08-21 14:46:07,974 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 14:46:07,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:46:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 14:46:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-21 14:46:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-21 14:46:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-21 14:46:08,027 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-21 14:46:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:08,028 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-21 14:46:08,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:46:08,028 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-21 14:46:08,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-21 14:46:08,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:08,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:08,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:46:08,030 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:08,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:08,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-21 14:46:08,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:08,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931494658] [2020-08-21 14:46:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,304 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:08,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:46:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:46:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 14:46:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 14:46:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:08,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:08,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931494658] [2020-08-21 14:46:08,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:08,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:46:08,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888088600] [2020-08-21 14:46:08,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:46:08,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:08,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:46:08,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:46:08,449 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-21 14:46:08,738 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:09,995 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:10,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:10,816 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-21 14:46:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:46:10,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-21 14:46:10,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:10,820 INFO L225 Difference]: With dead ends: 407 [2020-08-21 14:46:10,820 INFO L226 Difference]: Without dead ends: 287 [2020-08-21 14:46:10,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:46:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-21 14:46:10,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-21 14:46:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-21 14:46:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-21 14:46:10,885 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-21 14:46:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:10,885 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-21 14:46:10,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:46:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-21 14:46:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 14:46:10,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:10,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:10,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:46:10,888 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:10,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-21 14:46:10,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:10,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108639118] [2020-08-21 14:46:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,175 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 14:46:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 14:46:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 14:46:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:46:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:11,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108639118] [2020-08-21 14:46:11,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:11,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:46:11,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610613858] [2020-08-21 14:46:11,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:46:11,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:11,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:46:11,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:46:11,307 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-21 14:46:11,686 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:13,012 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:13,311 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:13,581 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:13,810 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:14,703 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-21 14:46:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:46:14,703 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-21 14:46:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:14,706 INFO L225 Difference]: With dead ends: 641 [2020-08-21 14:46:14,706 INFO L226 Difference]: Without dead ends: 421 [2020-08-21 14:46:14,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:46:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-21 14:46:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-21 14:46:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-21 14:46:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-21 14:46:14,813 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-21 14:46:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:14,817 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-21 14:46:14,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:46:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-21 14:46:14,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 14:46:14,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:14,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:14,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:46:14,822 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:14,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:14,822 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-21 14:46:14,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:14,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652265383] [2020-08-21 14:46:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,157 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:15,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:46:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 14:46:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 14:46:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:15,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:15,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652265383] [2020-08-21 14:46:15,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:15,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:46:15,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704656966] [2020-08-21 14:46:15,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:46:15,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:15,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:46:15,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:46:15,319 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-21 14:46:15,646 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:16,156 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:17,742 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:19,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:19,943 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-21 14:46:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 14:46:19,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-21 14:46:19,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:19,949 INFO L225 Difference]: With dead ends: 980 [2020-08-21 14:46:19,950 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 14:46:19,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 14:46:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 14:46:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-21 14:46:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-21 14:46:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-21 14:46:20,094 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-21 14:46:20,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:20,095 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-21 14:46:20,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:46:20,095 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-21 14:46:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 14:46:20,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:20,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:20,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:46:20,098 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:20,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:20,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-21 14:46:20,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:20,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555261945] [2020-08-21 14:46:20,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,348 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:46:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 14:46:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 14:46:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:20,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:20,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555261945] [2020-08-21 14:46:20,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:20,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:46:20,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594654682] [2020-08-21 14:46:20,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:46:20,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:20,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:46:20,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:46:20,546 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-21 14:46:21,378 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:21,611 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:21,853 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:23,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:23,132 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-21 14:46:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 14:46:23,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-21 14:46:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:23,143 INFO L225 Difference]: With dead ends: 1250 [2020-08-21 14:46:23,143 INFO L226 Difference]: Without dead ends: 723 [2020-08-21 14:46:23,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:46:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-21 14:46:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-21 14:46:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-21 14:46:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-21 14:46:23,284 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-21 14:46:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:23,285 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-21 14:46:23,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:46:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-21 14:46:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 14:46:23,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:23,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:23,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:46:23,288 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:23,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-21 14:46:23,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:23,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822346680] [2020-08-21 14:46:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,571 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:23,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 14:46:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 14:46:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 14:46:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:23,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822346680] [2020-08-21 14:46:23,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:23,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:46:23,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173746038] [2020-08-21 14:46:23,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:46:23,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:23,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:46:23,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:46:23,724 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-21 14:46:24,282 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:24,538 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:24,803 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:25,516 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:25,764 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:46:26,032 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:26,292 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:27,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:27,583 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-21 14:46:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 14:46:27,586 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-21 14:46:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:27,595 INFO L225 Difference]: With dead ends: 1343 [2020-08-21 14:46:27,595 INFO L226 Difference]: Without dead ends: 689 [2020-08-21 14:46:27,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 14:46:27,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-21 14:46:27,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-21 14:46:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 14:46:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-21 14:46:27,708 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-21 14:46:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:27,709 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-21 14:46:27,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:46:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-21 14:46:27,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-21 14:46:27,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:27,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:27,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:46:27,711 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:27,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:27,712 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-21 14:46:27,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:27,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302968] [2020-08-21 14:46:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,012 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:46:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 14:46:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:46:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 14:46:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 14:46:28,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302968] [2020-08-21 14:46:28,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:28,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 14:46:28,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266992870] [2020-08-21 14:46:28,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 14:46:28,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:28,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 14:46:28,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:46:28,169 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-21 14:46:28,976 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:29,317 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:29,555 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:30,620 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:31,250 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:31,585 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:31,855 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:32,619 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:32,923 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:33,576 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-21 14:46:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 14:46:33,577 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-21 14:46:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:33,584 INFO L225 Difference]: With dead ends: 1307 [2020-08-21 14:46:33,584 INFO L226 Difference]: Without dead ends: 682 [2020-08-21 14:46:33,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-21 14:46:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-21 14:46:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-21 14:46:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 14:46:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-21 14:46:33,757 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-21 14:46:33,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:33,758 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-21 14:46:33,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 14:46:33,759 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-21 14:46:33,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 14:46:33,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:33,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:33,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:46:33,762 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:33,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:33,763 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-21 14:46:33,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:33,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112432993] [2020-08-21 14:46:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,018 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:34,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:46:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:34,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:46:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 14:46:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 14:46:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:46:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:46:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 14:46:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 14:46:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 14:46:34,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112432993] [2020-08-21 14:46:34,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:46:34,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 14:46:34,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877327194] [2020-08-21 14:46:34,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 14:46:34,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:34,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 14:46:34,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 14:46:34,269 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-21 14:46:35,552 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:35,799 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:46:36,064 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:36,281 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:37,338 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-21 14:46:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:46:37,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-21 14:46:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:37,346 INFO L225 Difference]: With dead ends: 1216 [2020-08-21 14:46:37,347 INFO L226 Difference]: Without dead ends: 670 [2020-08-21 14:46:37,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:46:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-21 14:46:37,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-21 14:46:37,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 14:46:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-21 14:46:37,466 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-21 14:46:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:37,467 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-21 14:46:37,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 14:46:37,467 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-21 14:46:37,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 14:46:37,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:37,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:37,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:46:37,470 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:37,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-21 14:46:37,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:37,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898709168] [2020-08-21 14:46:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,776 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:37,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:46:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:46:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 14:46:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 14:46:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:46:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:46:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 14:46:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:37,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 14:46:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 14:46:38,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898709168] [2020-08-21 14:46:38,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:46:38,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 14:46:38,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289308037] [2020-08-21 14:46:38,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:46:38,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:38,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:46:38,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:46:38,013 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-21 14:46:38,758 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:39,005 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:39,250 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:39,909 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:40,188 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:40,424 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:41,599 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-21 14:46:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:46:41,599 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-21 14:46:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:41,602 INFO L225 Difference]: With dead ends: 1124 [2020-08-21 14:46:41,603 INFO L226 Difference]: Without dead ends: 573 [2020-08-21 14:46:41,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:46:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-21 14:46:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-21 14:46:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-21 14:46:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-21 14:46:41,707 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-21 14:46:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:41,708 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-21 14:46:41,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:46:41,708 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-21 14:46:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 14:46:41,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:41,710 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:41,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:46:41,711 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-21 14:46:41,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:41,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737457507] [2020-08-21 14:46:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:41,997 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:41,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:46:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:46:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 14:46:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 14:46:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:46:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 14:46:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:46:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 14:46:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-21 14:46:42,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737457507] [2020-08-21 14:46:42,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:46:42,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 14:46:42,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214491718] [2020-08-21 14:46:42,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:46:42,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:42,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:46:42,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:46:42,173 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-21 14:46:42,504 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:43,112 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:44,026 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:44,509 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-21 14:46:44,951 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-21 14:46:45,187 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:46:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:46,774 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-21 14:46:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 14:46:46,775 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-21 14:46:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:46,781 INFO L225 Difference]: With dead ends: 1637 [2020-08-21 14:46:46,781 INFO L226 Difference]: Without dead ends: 1109 [2020-08-21 14:46:46,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-21 14:46:46,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-21 14:46:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-21 14:46:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-21 14:46:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-21 14:46:47,004 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-21 14:46:47,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:47,006 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-21 14:46:47,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:46:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-21 14:46:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 14:46:47,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:47,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:47,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 14:46:47,011 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:47,012 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-21 14:46:47,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:47,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202988662] [2020-08-21 14:46:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,337 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:46:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:46:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:46:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 14:46:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:46:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:46:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 14:46:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 14:46:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 14:46:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 14:46:47,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202988662] [2020-08-21 14:46:47,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:46:47,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:46:47,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226671955] [2020-08-21 14:46:47,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:46:47,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:47,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:46:47,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:46:47,572 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-21 14:46:48,212 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:48,442 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:48,665 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:49,236 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:50,369 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:50,739 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:51,032 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:51,291 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:46:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:53,473 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-21 14:46:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 14:46:53,474 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-21 14:46:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:53,481 INFO L225 Difference]: With dead ends: 2187 [2020-08-21 14:46:53,481 INFO L226 Difference]: Without dead ends: 1134 [2020-08-21 14:46:53,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-21 14:46:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-21 14:46:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-21 14:46:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-21 14:46:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-21 14:46:53,690 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-21 14:46:53,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:53,691 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-21 14:46:53,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:46:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-21 14:46:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 14:46:53,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:53,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:46:53,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 14:46:53,694 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-21 14:46:53,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:53,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251927288] [2020-08-21 14:46:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:53,971 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:53,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 14:46:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:46:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:46:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 14:46:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:46:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 14:46:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 14:46:54,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:46:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:46:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:46:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 14:46:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 14:46:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 14:46:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-21 14:46:54,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251927288] [2020-08-21 14:46:54,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:46:54,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:46:54,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517755403] [2020-08-21 14:46:54,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:46:54,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:54,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:46:54,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:46:54,262 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-21 14:46:54,689 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:55,421 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187