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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:08,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:08,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:08,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:08,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:08,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:08,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:08,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:08,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:08,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:08,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:08,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:08,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:08,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:08,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:08,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:08,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:08,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:08,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:08,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:08,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:08,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:08,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:08,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:08,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:08,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:08,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:08,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:08,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:08,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:08,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:08,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:08,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:08,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:08,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:08,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:08,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:08,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:08,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:08,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:08,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:08,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:37:08,271 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:08,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:08,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:08,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:08,273 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:08,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:08,274 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:08,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:08,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:08,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:08,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:08,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:08,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:08,275 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:08,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:08,276 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:08,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:08,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:08,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:08,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:08,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:08,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:08,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:08,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:08,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:08,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:08,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:08,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:08,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:08,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:08,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:08,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:08,557 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:08,557 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:08,558 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c [2019-10-13 19:37:08,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6854dcdaf/7df912e3f30e4c10a65b48d935f591a4/FLAGa7910bbe0 [2019-10-13 19:37:09,151 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:09,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c [2019-10-13 19:37:09,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6854dcdaf/7df912e3f30e4c10a65b48d935f591a4/FLAGa7910bbe0 [2019-10-13 19:37:09,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6854dcdaf/7df912e3f30e4c10a65b48d935f591a4 [2019-10-13 19:37:09,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:09,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:09,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:09,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:09,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:09,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:09" (1/1) ... [2019-10-13 19:37:09,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a9dc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:09, skipping insertion in model container [2019-10-13 19:37:09,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:09" (1/1) ... [2019-10-13 19:37:09,472 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:09,534 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:09,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:09,999 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:10,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:10,118 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:10,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10 WrapperNode [2019-10-13 19:37:10,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:10,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:10,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:10,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:10,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (1/1) ... [2019-10-13 19:37:10,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (1/1) ... [2019-10-13 19:37:10,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (1/1) ... [2019-10-13 19:37:10,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (1/1) ... [2019-10-13 19:37:10,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (1/1) ... [2019-10-13 19:37:10,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (1/1) ... [2019-10-13 19:37:10,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (1/1) ... [2019-10-13 19:37:10,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:10,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:10,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:10,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:10,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-13 19:37:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:10,255 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:10,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:37:10,257 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:37:10,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:37:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:37:10,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:10,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:37:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 19:37:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:10,264 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 19:37:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:10,265 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:37:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:37:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:37:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:10,266 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:10,267 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:10,268 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:10,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:11,435 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:11,436 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:11,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:11 BoogieIcfgContainer [2019-10-13 19:37:11,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:11,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:11,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:11,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:11,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:09" (1/3) ... [2019-10-13 19:37:11,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333efed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:11, skipping insertion in model container [2019-10-13 19:37:11,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:10" (2/3) ... [2019-10-13 19:37:11,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@333efed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:11, skipping insertion in model container [2019-10-13 19:37:11,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:11" (3/3) ... [2019-10-13 19:37:11,447 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product57.cil.c [2019-10-13 19:37:11,457 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:11,465 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:11,476 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:11,510 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:11,510 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:11,510 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:11,510 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:11,511 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:11,511 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:11,512 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:11,512 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2019-10-13 19:37:11,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:37:11,548 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:11,549 INFO L380 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] [2019-10-13 19:37:11,551 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:11,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:11,556 INFO L82 PathProgramCache]: Analyzing trace with hash -2111020078, now seen corresponding path program 1 times [2019-10-13 19:37:11,564 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:11,565 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554595391] [2019-10-13 19:37:11,565 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:11,565 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:11,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,197 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:12,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554595391] [2019-10-13 19:37:12,294 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:12,294 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:12,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250576] [2019-10-13 19:37:12,301 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:12,301 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:12,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:12,318 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 4 states. [2019-10-13 19:37:13,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:13,478 INFO L93 Difference]: Finished difference Result 322 states and 415 transitions. [2019-10-13 19:37:13,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:37:13,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-13 19:37:13,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:13,505 INFO L225 Difference]: With dead ends: 322 [2019-10-13 19:37:13,505 INFO L226 Difference]: Without dead ends: 178 [2019-10-13 19:37:13,511 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-10-13 19:37:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 145. [2019-10-13 19:37:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-13 19:37:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2019-10-13 19:37:13,612 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 51 [2019-10-13 19:37:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:13,612 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2019-10-13 19:37:13,613 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2019-10-13 19:37:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:13,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:13,616 INFO L380 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] [2019-10-13 19:37:13,617 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:13,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:13,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1832052429, now seen corresponding path program 1 times [2019-10-13 19:37:13,617 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:13,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537721626] [2019-10-13 19:37:13,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:13,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:13,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,020 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:14,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537721626] [2019-10-13 19:37:14,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:14,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:37:14,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745420256] [2019-10-13 19:37:14,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:37:14,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:14,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:37:14,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:37:14,070 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 5 states. [2019-10-13 19:37:14,582 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:15,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:15,501 INFO L93 Difference]: Finished difference Result 267 states and 326 transitions. [2019-10-13 19:37:15,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:37:15,506 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-13 19:37:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:15,532 INFO L225 Difference]: With dead ends: 267 [2019-10-13 19:37:15,532 INFO L226 Difference]: Without dead ends: 168 [2019-10-13 19:37:15,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:37:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-13 19:37:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2019-10-13 19:37:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-13 19:37:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2019-10-13 19:37:15,575 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 52 [2019-10-13 19:37:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:15,576 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2019-10-13 19:37:15,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:37:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2019-10-13 19:37:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:37:15,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:15,582 INFO L380 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] [2019-10-13 19:37:15,582 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:15,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash -761941703, now seen corresponding path program 1 times [2019-10-13 19:37:15,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:15,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105733470] [2019-10-13 19:37:15,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:15,585 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:15,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:15,962 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:16,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105733470] [2019-10-13 19:37:16,124 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:16,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:37:16,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742718285] [2019-10-13 19:37:16,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:37:16,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:16,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:37:16,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:37:16,127 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 9 states. [2019-10-13 19:37:16,553 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:16,918 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-13 19:37:17,184 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:17,439 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:18,854 INFO L93 Difference]: Finished difference Result 276 states and 341 transitions. [2019-10-13 19:37:18,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:37:18,855 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-13 19:37:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:18,857 INFO L225 Difference]: With dead ends: 276 [2019-10-13 19:37:18,863 INFO L226 Difference]: Without dead ends: 168 [2019-10-13 19:37:18,864 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:37:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-13 19:37:18,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2019-10-13 19:37:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-13 19:37:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 157 transitions. [2019-10-13 19:37:18,938 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 157 transitions. Word has length 56 [2019-10-13 19:37:18,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:18,945 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 157 transitions. [2019-10-13 19:37:18,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:37:18,945 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 157 transitions. [2019-10-13 19:37:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-13 19:37:18,953 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:18,953 INFO L380 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] [2019-10-13 19:37:18,954 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:18,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:18,955 INFO L82 PathProgramCache]: Analyzing trace with hash -505794736, now seen corresponding path program 1 times [2019-10-13 19:37:18,956 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:18,956 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096934958] [2019-10-13 19:37:18,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:18,956 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:18,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,295 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:19,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096934958] [2019-10-13 19:37:19,397 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:19,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:37:19,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650165069] [2019-10-13 19:37:19,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:37:19,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:19,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:37:19,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:37:19,399 INFO L87 Difference]: Start difference. First operand 136 states and 157 transitions. Second operand 7 states. [2019-10-13 19:37:19,818 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:21,011 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:21,773 INFO L93 Difference]: Finished difference Result 370 states and 463 transitions. [2019-10-13 19:37:21,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:37:21,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2019-10-13 19:37:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:21,777 INFO L225 Difference]: With dead ends: 370 [2019-10-13 19:37:21,778 INFO L226 Difference]: Without dead ends: 262 [2019-10-13 19:37:21,779 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:37:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2019-10-13 19:37:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 216. [2019-10-13 19:37:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2019-10-13 19:37:21,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 248 transitions. [2019-10-13 19:37:21,822 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 248 transitions. Word has length 69 [2019-10-13 19:37:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:21,822 INFO L462 AbstractCegarLoop]: Abstraction has 216 states and 248 transitions. [2019-10-13 19:37:21,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:37:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 248 transitions. [2019-10-13 19:37:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-13 19:37:21,824 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:21,824 INFO L380 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] [2019-10-13 19:37:21,825 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash -210026842, now seen corresponding path program 1 times [2019-10-13 19:37:21,825 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:21,825 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795739872] [2019-10-13 19:37:21,826 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:21,826 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:21,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,121 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:22,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795739872] [2019-10-13 19:37:22,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:22,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:37:22,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280094084] [2019-10-13 19:37:22,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:37:22,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:22,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:37:22,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:37:22,212 INFO L87 Difference]: Start difference. First operand 216 states and 248 transitions. Second operand 9 states. [2019-10-13 19:37:22,662 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:23,716 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:24,059 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:24,649 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:24,941 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:25,986 INFO L93 Difference]: Finished difference Result 639 states and 800 transitions. [2019-10-13 19:37:25,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:37:25,986 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2019-10-13 19:37:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:25,991 INFO L225 Difference]: With dead ends: 639 [2019-10-13 19:37:25,991 INFO L226 Difference]: Without dead ends: 451 [2019-10-13 19:37:25,992 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:37:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2019-10-13 19:37:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 380. [2019-10-13 19:37:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2019-10-13 19:37:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 436 transitions. [2019-10-13 19:37:26,080 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 436 transitions. Word has length 83 [2019-10-13 19:37:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:26,080 INFO L462 AbstractCegarLoop]: Abstraction has 380 states and 436 transitions. [2019-10-13 19:37:26,080 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:37:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 436 transitions. [2019-10-13 19:37:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 19:37:26,082 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:26,082 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:26,083 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:26,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:26,083 INFO L82 PathProgramCache]: Analyzing trace with hash -910798134, now seen corresponding path program 1 times [2019-10-13 19:37:26,083 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:26,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581303248] [2019-10-13 19:37:26,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:26,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:26,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,383 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:26,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581303248] [2019-10-13 19:37:26,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:26,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:26,504 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574338022] [2019-10-13 19:37:26,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:26,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:26,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:26,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:26,505 INFO L87 Difference]: Start difference. First operand 380 states and 436 transitions. Second operand 10 states. [2019-10-13 19:37:27,105 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:28,324 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:29,524 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:29,809 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:30,085 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:30,402 INFO L93 Difference]: Finished difference Result 838 states and 1031 transitions. [2019-10-13 19:37:30,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 19:37:30,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2019-10-13 19:37:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:30,406 INFO L225 Difference]: With dead ends: 838 [2019-10-13 19:37:30,406 INFO L226 Difference]: Without dead ends: 486 [2019-10-13 19:37:30,408 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:37:30,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-10-13 19:37:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 379. [2019-10-13 19:37:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-10-13 19:37:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 433 transitions. [2019-10-13 19:37:30,478 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 433 transitions. Word has length 87 [2019-10-13 19:37:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:30,478 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 433 transitions. [2019-10-13 19:37:30,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:30,479 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 433 transitions. [2019-10-13 19:37:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:37:30,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:30,481 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:30,481 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:30,481 INFO L82 PathProgramCache]: Analyzing trace with hash -777270984, now seen corresponding path program 1 times [2019-10-13 19:37:30,481 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:30,482 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487701569] [2019-10-13 19:37:30,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:30,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:30,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,735 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:30,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487701569] [2019-10-13 19:37:30,885 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:30,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:37:30,886 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191767760] [2019-10-13 19:37:30,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:37:30,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:30,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:37:30,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:37:30,887 INFO L87 Difference]: Start difference. First operand 379 states and 433 transitions. Second operand 10 states. [2019-10-13 19:37:31,924 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:32,206 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-13 19:37:32,467 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:32,721 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:33,831 INFO L93 Difference]: Finished difference Result 845 states and 1060 transitions. [2019-10-13 19:37:33,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:37:33,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-10-13 19:37:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:33,835 INFO L225 Difference]: With dead ends: 845 [2019-10-13 19:37:33,835 INFO L226 Difference]: Without dead ends: 494 [2019-10-13 19:37:33,836 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:37:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2019-10-13 19:37:33,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 389. [2019-10-13 19:37:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2019-10-13 19:37:33,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 443 transitions. [2019-10-13 19:37:33,906 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 443 transitions. Word has length 103 [2019-10-13 19:37:33,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:33,907 INFO L462 AbstractCegarLoop]: Abstraction has 389 states and 443 transitions. [2019-10-13 19:37:33,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:37:33,907 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 443 transitions. [2019-10-13 19:37:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:37:33,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:33,909 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:33,909 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:33,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:33,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1151001718, now seen corresponding path program 1 times [2019-10-13 19:37:33,910 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:33,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036876675] [2019-10-13 19:37:33,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:33,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:33,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,183 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:34,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036876675] [2019-10-13 19:37:34,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:34,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:37:34,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666550786] [2019-10-13 19:37:34,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:37:34,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:34,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:37:34,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:34,355 INFO L87 Difference]: Start difference. First operand 389 states and 443 transitions. Second operand 12 states. [2019-10-13 19:37:35,273 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:37:35,533 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:35,808 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:36,510 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:36,782 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:37,044 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:38,475 INFO L93 Difference]: Finished difference Result 865 states and 1082 transitions. [2019-10-13 19:37:38,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:37:38,478 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 103 [2019-10-13 19:37:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:38,483 INFO L225 Difference]: With dead ends: 865 [2019-10-13 19:37:38,483 INFO L226 Difference]: Without dead ends: 504 [2019-10-13 19:37:38,485 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:37:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2019-10-13 19:37:38,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2019-10-13 19:37:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2019-10-13 19:37:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 451 transitions. [2019-10-13 19:37:38,568 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 451 transitions. Word has length 103 [2019-10-13 19:37:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:38,568 INFO L462 AbstractCegarLoop]: Abstraction has 397 states and 451 transitions. [2019-10-13 19:37:38,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:37:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 451 transitions. [2019-10-13 19:37:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-10-13 19:37:38,572 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:38,572 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:38,573 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:38,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:38,573 INFO L82 PathProgramCache]: Analyzing trace with hash 910461589, now seen corresponding path program 1 times [2019-10-13 19:37:38,573 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:38,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272143310] [2019-10-13 19:37:38,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:38,574 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:38,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,900 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:39,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272143310] [2019-10-13 19:37:39,146 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:39,146 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:39,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548101382] [2019-10-13 19:37:39,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:39,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:39,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:39,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:39,150 INFO L87 Difference]: Start difference. First operand 397 states and 451 transitions. Second operand 8 states. [2019-10-13 19:37:39,615 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:40,172 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:37:42,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:42,531 INFO L93 Difference]: Finished difference Result 1184 states and 1533 transitions. [2019-10-13 19:37:42,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:37:42,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2019-10-13 19:37:42,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:42,537 INFO L225 Difference]: With dead ends: 1184 [2019-10-13 19:37:42,537 INFO L226 Difference]: Without dead ends: 815 [2019-10-13 19:37:42,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:37:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2019-10-13 19:37:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 683. [2019-10-13 19:37:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-10-13 19:37:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 805 transitions. [2019-10-13 19:37:42,662 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 805 transitions. Word has length 103 [2019-10-13 19:37:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:42,663 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 805 transitions. [2019-10-13 19:37:42,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 805 transitions. [2019-10-13 19:37:42,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-13 19:37:42,665 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:42,665 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:42,665 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:42,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:42,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1450576315, now seen corresponding path program 1 times [2019-10-13 19:37:42,666 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:42,666 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250051778] [2019-10-13 19:37:42,666 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:42,666 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:42,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,934 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:37:43,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250051778] [2019-10-13 19:37:43,181 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595115881] [2019-10-13 19:37:43,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:37:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:43,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:37:43,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:37:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:43,586 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:37:43,586 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2019-10-13 19:37:43,586 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505744308] [2019-10-13 19:37:43,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:43,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:43,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:37:43,588 INFO L87 Difference]: Start difference. First operand 683 states and 805 transitions. Second operand 8 states. [2019-10-13 19:37:44,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:44,146 INFO L93 Difference]: Finished difference Result 1303 states and 1546 transitions. [2019-10-13 19:37:44,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:37:44,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-10-13 19:37:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:44,150 INFO L225 Difference]: With dead ends: 1303 [2019-10-13 19:37:44,150 INFO L226 Difference]: Without dead ends: 648 [2019-10-13 19:37:44,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:37:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-10-13 19:37:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 648. [2019-10-13 19:37:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-10-13 19:37:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 749 transitions. [2019-10-13 19:37:44,267 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 749 transitions. Word has length 107 [2019-10-13 19:37:44,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:44,267 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 749 transitions. [2019-10-13 19:37:44,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 749 transitions. [2019-10-13 19:37:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 19:37:44,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:44,271 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:44,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:37:44,475 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:44,476 INFO L82 PathProgramCache]: Analyzing trace with hash 675241674, now seen corresponding path program 1 times [2019-10-13 19:37:44,476 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:44,477 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463643819] [2019-10-13 19:37:44,477 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:44,477 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:44,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,892 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:37:45,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463643819] [2019-10-13 19:37:45,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441655029] [2019-10-13 19:37:45,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:37:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:45,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:37:45,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:37:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:37:45,482 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:37:45,482 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2019-10-13 19:37:45,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240730280] [2019-10-13 19:37:45,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:37:45,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:45,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:37:45,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:37:45,484 INFO L87 Difference]: Start difference. First operand 648 states and 749 transitions. Second operand 9 states.