/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:24:49,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:24:49,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:24:49,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:24:49,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:24:49,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:24:49,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:24:49,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:24:49,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:24:49,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:24:49,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:24:49,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:24:49,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:24:49,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:24:49,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:24:49,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:24:49,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:24:49,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:24:49,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:24:49,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:24:49,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:24:49,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:24:49,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:24:49,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:24:49,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:24:49,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:24:49,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:24:49,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:24:49,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:24:49,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:24:49,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:24:49,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:24:49,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:24:49,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:24:49,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:24:49,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:24:49,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:24:49,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:24:49,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:24:49,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:24:49,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:24:49,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 03:24:49,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:24:49,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:24:49,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:24:49,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:24:49,214 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:24:49,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:24:49,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:24:49,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:24:49,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:24:49,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:24:49,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:24:49,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:24:49,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:24:49,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:24:49,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:24:49,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:24:49,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:24:49,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:24:49,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:24:49,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:24:49,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:24:49,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:24:49,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:24:49,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:24:49,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:24:49,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:24:49,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:24:49,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:24:49,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:24:49,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:24:49,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:24:49,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:24:49,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:24:49,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:24:49,526 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:24:49,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-19 03:24:49,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36014988d/fc8176c8414f4854bd21039fcb910517/FLAGb40919b9a [2020-08-19 03:24:50,139 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:24:50,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-19 03:24:50,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36014988d/fc8176c8414f4854bd21039fcb910517/FLAGb40919b9a [2020-08-19 03:24:50,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36014988d/fc8176c8414f4854bd21039fcb910517 [2020-08-19 03:24:50,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:24:50,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:24:50,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:24:50,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:24:50,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:24:50,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:24:50" (1/1) ... [2020-08-19 03:24:50,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35272ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:50, skipping insertion in model container [2020-08-19 03:24:50,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:24:50" (1/1) ... [2020-08-19 03:24:50,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:24:50,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:24:50,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:24:50,918 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:24:51,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:24:51,108 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:24:51,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51 WrapperNode [2020-08-19 03:24:51,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:24:51,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:24:51,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:24:51,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:24:51,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (1/1) ... [2020-08-19 03:24:51,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (1/1) ... [2020-08-19 03:24:51,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (1/1) ... [2020-08-19 03:24:51,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (1/1) ... [2020-08-19 03:24:51,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (1/1) ... [2020-08-19 03:24:51,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (1/1) ... [2020-08-19 03:24:51,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (1/1) ... [2020-08-19 03:24:51,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:24:51,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:24:51,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:24:51,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:24:51,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:24:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:24:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:24:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 03:24:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 03:24:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 03:24:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 03:24:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 03:24:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 03:24:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 03:24:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 03:24:51,262 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:24:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 03:24:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 03:24:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 03:24:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 03:24:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 03:24:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 03:24:51,263 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 03:24:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 03:24:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 03:24:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 03:24:51,264 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 03:24:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 03:24:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 03:24:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 03:24:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 03:24:51,265 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 03:24:51,266 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 03:24:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 03:24:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 03:24:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:24:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 03:24:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 03:24:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 03:24:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 03:24:51,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 03:24:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 03:24:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 03:24:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:24:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:24:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 03:24:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 03:24:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 03:24:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 03:24:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 03:24:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 03:24:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 03:24:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 03:24:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 03:24:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 03:24:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 03:24:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 03:24:51,270 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 03:24:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 03:24:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 03:24:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 03:24:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 03:24:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 03:24:51,272 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 03:24:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 03:24:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:24:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 03:24:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 03:24:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 03:24:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 03:24:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 03:24:51,273 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 03:24:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 03:24:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 03:24:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 03:24:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:24:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 03:24:51,274 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:24:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:24:51,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 03:24:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:24:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:24:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:24:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:24:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 03:24:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:24:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 03:24:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 03:24:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:24:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 03:24:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 03:24:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 03:24:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:24:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:24:51,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:24:52,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:24:52,269 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 03:24:52,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:24:52 BoogieIcfgContainer [2020-08-19 03:24:52,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:24:52,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:24:52,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:24:52,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:24:52,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:24:50" (1/3) ... [2020-08-19 03:24:52,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247e0fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:24:52, skipping insertion in model container [2020-08-19 03:24:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:24:51" (2/3) ... [2020-08-19 03:24:52,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247e0fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:24:52, skipping insertion in model container [2020-08-19 03:24:52,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:24:52" (3/3) ... [2020-08-19 03:24:52,282 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-19 03:24:52,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:24:52,299 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:24:52,313 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:24:52,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:24:52,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:24:52,337 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:24:52,337 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:24:52,337 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:24:52,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:24:52,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:24:52,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:24:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-19 03:24:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:24:52,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:52,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:52,373 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:52,378 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-19 03:24:52,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:52,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151335503] [2020-08-19 03:24:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,037 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:53,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 03:24:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 03:24:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 03:24:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:53,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151335503] [2020-08-19 03:24:53,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:53,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:24:53,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802274198] [2020-08-19 03:24:53,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:24:53,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:53,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:24:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:24:53,154 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-19 03:24:54,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:54,184 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-19 03:24:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:24:54,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 03:24:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:54,200 INFO L225 Difference]: With dead ends: 287 [2020-08-19 03:24:54,200 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 03:24:54,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:24:54,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 03:24:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 03:24:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 03:24:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-19 03:24:54,296 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-19 03:24:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:54,297 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-19 03:24:54,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:24:54,297 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-19 03:24:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 03:24:54,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:54,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:54,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:24:54,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:54,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:54,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-19 03:24:54,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:54,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338829355] [2020-08-19 03:24:54,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,676 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:54,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 03:24:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:24:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:24:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:54,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338829355] [2020-08-19 03:24:54,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:54,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:24:54,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208886338] [2020-08-19 03:24:54,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:24:54,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:54,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:24:54,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:24:54,731 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-19 03:24:55,151 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:24:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:55,842 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-19 03:24:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:24:55,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 03:24:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:55,846 INFO L225 Difference]: With dead ends: 220 [2020-08-19 03:24:55,846 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 03:24:55,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:24:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 03:24:55,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-19 03:24:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 03:24:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-19 03:24:55,886 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-19 03:24:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:55,886 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-19 03:24:55,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:24:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-19 03:24:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 03:24:55,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:55,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:24:55,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:24:55,889 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:55,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:55,890 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-19 03:24:55,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:55,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120195571] [2020-08-19 03:24:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,235 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 03:24:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:24:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 03:24:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:56,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120195571] [2020-08-19 03:24:56,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:56,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:24:56,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092495191] [2020-08-19 03:24:56,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:24:56,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:56,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:24:56,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:24:56,332 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-19 03:24:56,720 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:24:57,037 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:57,273 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:57,491 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:24:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:24:58,470 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-19 03:24:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:24:58,472 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 03:24:58,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:24:58,475 INFO L225 Difference]: With dead ends: 229 [2020-08-19 03:24:58,475 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 03:24:58,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:24:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 03:24:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-19 03:24:58,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 03:24:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-19 03:24:58,508 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-19 03:24:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:24:58,508 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-19 03:24:58,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:24:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-19 03:24:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 03:24:58,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:24:58,511 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] [2020-08-19 03:24:58,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:24:58,511 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:24:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:24:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-19 03:24:58,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:24:58,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278721046] [2020-08-19 03:24:58,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:24:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,801 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:24:58,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:24:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:24:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:24:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:24:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:24:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:24:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:24:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 03:24:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 03:24:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 03:24:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:24:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:24:58,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278721046] [2020-08-19 03:24:58,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:24:58,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:24:58,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800103236] [2020-08-19 03:24:58,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:24:58,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:24:58,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:24:58,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:24:58,943 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-19 03:24:59,252 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:00,287 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:25:00,835 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-19 03:25:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:25:00,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 03:25:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:25:00,843 INFO L225 Difference]: With dead ends: 324 [2020-08-19 03:25:00,843 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 03:25:00,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:25:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 03:25:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-19 03:25:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-19 03:25:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-19 03:25:00,906 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-19 03:25:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:25:00,906 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-19 03:25:00,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:25:00,907 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-19 03:25:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 03:25:00,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:25:00,909 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] [2020-08-19 03:25:00,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:25:00,910 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:25:00,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:25:00,910 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-19 03:25:00,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:25:00,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153083785] [2020-08-19 03:25:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:25:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,212 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:25:01,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:25:01,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:25:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:25:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:25:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:25:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 03:25:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:25:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:25:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 03:25:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 03:25:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 03:25:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:25:01,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153083785] [2020-08-19 03:25:01,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:25:01,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:25:01,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792035116] [2020-08-19 03:25:01,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:25:01,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:25:01,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:25:01,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:25:01,299 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-19 03:25:01,669 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:02,973 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:03,253 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:03,505 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:03,750 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:25:04,316 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-19 03:25:04,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:25:04,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-19 03:25:04,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:25:04,325 INFO L225 Difference]: With dead ends: 528 [2020-08-19 03:25:04,325 INFO L226 Difference]: Without dead ends: 359 [2020-08-19 03:25:04,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:25:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-19 03:25:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-19 03:25:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-19 03:25:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-19 03:25:04,396 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-19 03:25:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:25:04,397 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-19 03:25:04,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:25:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-19 03:25:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 03:25:04,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:25:04,400 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] [2020-08-19 03:25:04,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:25:04,400 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:25:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:25:04,401 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-19 03:25:04,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:25:04,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589026172] [2020-08-19 03:25:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:25:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,719 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:25:04,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:25:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:25:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:25:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:25:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:25:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:25:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:25:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:25:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:25:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 03:25:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 03:25:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:25:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:25:04,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589026172] [2020-08-19 03:25:04,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:25:04,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:25:04,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794446825] [2020-08-19 03:25:04,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:25:04,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:25:04,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:25:04,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:25:04,835 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-19 03:25:05,313 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:05,801 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:07,264 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:25:08,627 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-19 03:25:08,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:25:08,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 03:25:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:25:08,633 INFO L225 Difference]: With dead ends: 770 [2020-08-19 03:25:08,633 INFO L226 Difference]: Without dead ends: 590 [2020-08-19 03:25:08,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 03:25:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-19 03:25:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-19 03:25:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-19 03:25:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-19 03:25:08,739 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-19 03:25:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:25:08,739 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-19 03:25:08,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:25:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-19 03:25:08,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 03:25:08,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:25:08,741 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] [2020-08-19 03:25:08,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:25:08,742 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:25:08,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:25:08,742 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-19 03:25:08,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:25:08,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231630625] [2020-08-19 03:25:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:25:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:08,975 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:25:08,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:25:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:08,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:25:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:08,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:25:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:25:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:25:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:25:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:25:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:25:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:25:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 03:25:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 03:25:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:25:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:25:09,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231630625] [2020-08-19 03:25:09,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:25:09,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 03:25:09,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421928237] [2020-08-19 03:25:09,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:25:09,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:25:09,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:25:09,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:25:09,082 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-19 03:25:09,823 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:10,033 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:10,259 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:25:11,104 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-19 03:25:11,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:25:11,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-19 03:25:11,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:25:11,111 INFO L225 Difference]: With dead ends: 947 [2020-08-19 03:25:11,111 INFO L226 Difference]: Without dead ends: 566 [2020-08-19 03:25:11,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:25:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-19 03:25:11,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-19 03:25:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-19 03:25:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-19 03:25:11,225 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-19 03:25:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:25:11,225 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-19 03:25:11,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:25:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-19 03:25:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 03:25:11,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:25:11,227 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] [2020-08-19 03:25:11,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:25:11,227 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:25:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:25:11,228 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-19 03:25:11,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:25:11,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633192870] [2020-08-19 03:25:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:25:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,498 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:25:11,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:25:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:25:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:25:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:25:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:25:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:25:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:25:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:25:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:25:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 03:25:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 03:25:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:25:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:25:11,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633192870] [2020-08-19 03:25:11,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:25:11,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 03:25:11,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807877549] [2020-08-19 03:25:11,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:25:11,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:25:11,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:25:11,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:25:11,638 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-19 03:25:12,262 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:12,498 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:12,718 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:13,319 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:13,541 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:25:13,790 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:14,011 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:15,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:25:15,036 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-19 03:25:15,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 03:25:15,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-19 03:25:15,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:25:15,041 INFO L225 Difference]: With dead ends: 1071 [2020-08-19 03:25:15,041 INFO L226 Difference]: Without dead ends: 571 [2020-08-19 03:25:15,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 03:25:15,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-19 03:25:15,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-19 03:25:15,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-19 03:25:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-19 03:25:15,146 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-19 03:25:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:25:15,146 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-19 03:25:15,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:25:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-19 03:25:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 03:25:15,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:25:15,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:25:15,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:25:15,151 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:25:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:25:15,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-19 03:25:15,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:25:15,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033508750] [2020-08-19 03:25:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:25:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,438 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:25:15,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:25:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:25:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:25:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:25:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:25:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:25:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:25:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:25:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:25:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 03:25:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 03:25:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 03:25:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:25:15,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033508750] [2020-08-19 03:25:15,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:25:15,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:25:15,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652532084] [2020-08-19 03:25:15,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:25:15,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:25:15,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:25:15,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:25:15,746 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-19 03:25:16,954 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:17,581 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:18,294 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:25:18,605 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:25:18,875 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:25:19,124 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:25:19,408 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:25:19,662 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:25:20,122 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-19 03:25:20,367 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:25:20,637 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:25:20,916 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 03:25:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:25:22,888 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-19 03:25:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 03:25:22,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-19 03:25:22,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:25:22,898 INFO L225 Difference]: With dead ends: 1563 [2020-08-19 03:25:22,898 INFO L226 Difference]: Without dead ends: 1056 [2020-08-19 03:25:22,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-19 03:25:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-19 03:25:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-19 03:25:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-19 03:25:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-19 03:25:23,094 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-19 03:25:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:25:23,094 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-19 03:25:23,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:25:23,095 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-19 03:25:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 03:25:23,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:25:23,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:25:23,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:25:23,098 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:25:23,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:25:23,098 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-19 03:25:23,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:25:23,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944280988] [2020-08-19 03:25:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:25:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,433 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:25:23,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:25:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:25:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:25:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:25:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:25:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:25:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 03:25:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 03:25:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:25:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:25:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:25:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:25:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 03:25:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:25:23,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944280988] [2020-08-19 03:25:23,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:25:23,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 03:25:23,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919548010] [2020-08-19 03:25:23,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 03:25:23,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:25:23,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 03:25:23,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:25:23,619 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-19 03:25:24,270 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:24,509 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:24,730 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:25,255 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:25,926 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:26,250 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:26,813 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:27,064 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:25:27,316 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:25:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:25:28,756 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-19 03:25:28,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 03:25:28,757 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-19 03:25:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:25:28,764 INFO L225 Difference]: With dead ends: 2050 [2020-08-19 03:25:28,764 INFO L226 Difference]: Without dead ends: 1076 [2020-08-19 03:25:28,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-19 03:25:28,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-19 03:25:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-19 03:25:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-19 03:25:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-19 03:25:28,965 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-19 03:25:28,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:25:28,967 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-19 03:25:28,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 03:25:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-19 03:25:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 03:25:28,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:25:28,970 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:25:28,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:25:28,971 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:25:28,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:25:28,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-19 03:25:28,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:25:28,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983333610] [2020-08-19 03:25:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:25:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,294 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:25:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:25:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:25:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:25:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:25:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:25:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:25:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:25:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:25:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 03:25:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:25:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:25:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 03:25:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 03:25:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 03:25:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:25:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 03:25:29,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983333610] [2020-08-19 03:25:29,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:25:29,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 03:25:29,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397335343] [2020-08-19 03:25:29,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:25:29,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:25:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:25:29,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:25:29,446 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-19 03:25:30,188 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:30,416 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:30,635 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:25:31,563 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 03:25:32,057 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 03:25:32,361 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:25:32,628 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:25:33,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:25:33,253 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-19 03:25:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 03:25:33,254 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-19 03:25:33,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:25:33,255 INFO L225 Difference]: With dead ends: 1575 [2020-08-19 03:25:33,255 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:25:33,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-19 03:25:33,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:25:33,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:25:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:25:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:25:33,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-19 03:25:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:25:33,261 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:25:33,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:25:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:25:33,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:25:33,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:25:33,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:25:34,292 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-19 03:25:35,761 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-19 03:25:36,167 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-19 03:25:37,921 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-19 03:25:38,995 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-19 03:25:40,136 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-19 03:25:40,927 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-19 03:25:41,087 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 03:25:41,249 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 03:25:41,406 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-19 03:25:42,025 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-19 03:25:43,172 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-19 03:25:43,735 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-19 03:25:43,919 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-19 03:25:44,072 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 03:25:44,658 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-19 03:25:45,419 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-19 03:25:45,578 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 03:25:45,770 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 03:25:45,924 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 03:25:46,709 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-19 03:25:46,989 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-19 03:25:47,155 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-19 03:25:48,307 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2020-08-19 03:25:48,477 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1