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_spec5_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:07:56,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:07:56,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:07:56,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:07:56,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:07:56,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:07:56,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:07:56,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:07:56,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:07:56,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:07:56,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:07:56,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:07:56,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:07:56,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:07:56,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:07:56,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:07:56,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:07:56,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:07:56,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:07:56,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:07:56,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:07:56,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:07:56,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:07:56,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:07:56,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:07:56,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:07:56,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:07:56,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:07:56,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:07:56,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:07:56,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:07:56,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:07:56,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:07:56,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:07:56,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:07:56,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:07:56,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:07:56,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:07:56,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:07:56,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:07:56,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:07:56,321 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 [2019-09-20 13:07:56,347 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:07:56,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:07:56,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:07:56,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:07:56,353 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:07:56,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:07:56,354 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:07:56,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:07:56,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:07:56,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:07:56,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:07:56,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:07:56,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:07:56,357 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:07:56,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:07:56,357 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:07:56,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:07:56,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:07:56,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:07:56,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:07:56,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:07:56,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:07:56,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:07:56,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:07:56,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:07:56,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:07:56,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:07:56,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:07:56,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:07:56,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:07:56,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:07:56,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:07:56,410 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:07:56,411 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:07:56,411 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-09-20 13:07:56,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7587eee89/6c5adbd7198a41a3b18610bfcaf5901d/FLAGf844cb65f [2019-09-20 13:07:56,977 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:07:56,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-09-20 13:07:56,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7587eee89/6c5adbd7198a41a3b18610bfcaf5901d/FLAGf844cb65f [2019-09-20 13:07:57,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7587eee89/6c5adbd7198a41a3b18610bfcaf5901d [2019-09-20 13:07:57,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:07:57,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:07:57,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:57,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:07:57,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:07:57,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,343 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 20.09 01:07:57, skipping insertion in model container [2019-09-20 13:07:57,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:07:57" (1/1) ... [2019-09-20 13:07:57,351 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:07:57,407 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:07:57,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:57,925 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:07:58,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:07:58,092 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:07:58,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58 WrapperNode [2019-09-20 13:07:58,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:07:58,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:07:58,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:07:58,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:07:58,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (1/1) ... [2019-09-20 13:07:58,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (1/1) ... [2019-09-20 13:07:58,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (1/1) ... [2019-09-20 13:07:58,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (1/1) ... [2019-09-20 13:07:58,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (1/1) ... [2019-09-20 13:07:58,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (1/1) ... [2019-09-20 13:07:58,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (1/1) ... [2019-09-20 13:07:58,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:07:58,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:07:58,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:07:58,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:07:58,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (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 [2019-09-20 13:07:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:07:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:07:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:07:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:07:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:07:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:07:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:07:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:07:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:07:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-20 13:07:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:07:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:07:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:07:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:07:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:07:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:07:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:07:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:07:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:07:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:07:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-20 13:07:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:07:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:07:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:07:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:07:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:07:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:07:58,264 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:07:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:07:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:58,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:58,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:07:58,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:07:58,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:07:58,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:07:58,266 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:07:58,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:07:58,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:07:58,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:07:58,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:07:58,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:07:58,267 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:07:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:07:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:07:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:07:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:07:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:07:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:07:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:07:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-20 13:07:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:07:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:07:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:07:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:07:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:07:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:07:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:07:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:07:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:07:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:07:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:07:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:07:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:07:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-20 13:07:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-20 13:07:58,271 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-20 13:07:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:07:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:07:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:07:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:07:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:07:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:07:58,272 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:07:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:07:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:07:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:07:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:07:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:07:58,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:07:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:07:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:07:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:07:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:07:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:07:58,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:07:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:07:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:07:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:07:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:07:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:07:58,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:07:58,276 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:07:58,276 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:07:58,276 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:07:58,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:07:58,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:07:58,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:07:58,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:07:59,388 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:07:59,388 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:07:59,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:59 BoogieIcfgContainer [2019-09-20 13:07:59,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:07:59,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:07:59,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:07:59,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:07:59,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:07:57" (1/3) ... [2019-09-20 13:07:59,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2229366e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:59, skipping insertion in model container [2019-09-20 13:07:59,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:07:58" (2/3) ... [2019-09-20 13:07:59,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2229366e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:07:59, skipping insertion in model container [2019-09-20 13:07:59,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:07:59" (3/3) ... [2019-09-20 13:07:59,399 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2019-09-20 13:07:59,409 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:07:59,418 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:07:59,436 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:07:59,465 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:07:59,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:07:59,465 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:07:59,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:07:59,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:07:59,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:07:59,466 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:07:59,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:07:59,467 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:07:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2019-09-20 13:07:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:07:59,508 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:07:59,509 INFO L407 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] [2019-09-20 13:07:59,514 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:07:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:07:59,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1747867680, now seen corresponding path program 1 times [2019-09-20 13:07:59,523 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:07:59,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:07:59,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:59,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:07:59,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:07:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:07:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:07:59,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:07:59,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:07:59,986 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:08:00,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:08:00,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:00,005 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 2 states. [2019-09-20 13:08:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:00,092 INFO L93 Difference]: Finished difference Result 328 states and 405 transitions. [2019-09-20 13:08:00,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:08:00,093 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:08:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:00,108 INFO L225 Difference]: With dead ends: 328 [2019-09-20 13:08:00,108 INFO L226 Difference]: Without dead ends: 166 [2019-09-20 13:08:00,113 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:08:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-09-20 13:08:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2019-09-20 13:08:00,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-09-20 13:08:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2019-09-20 13:08:00,171 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 59 [2019-09-20 13:08:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:00,171 INFO L475 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2019-09-20 13:08:00,171 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:08:00,172 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2019-09-20 13:08:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:08:00,176 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:00,177 INFO L407 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] [2019-09-20 13:08:00,177 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:00,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:00,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2102602730, now seen corresponding path program 1 times [2019-09-20 13:08:00,178 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:00,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:00,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:00,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:00,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:00,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:00,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:00,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:00,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:00,292 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand 3 states. [2019-09-20 13:08:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:00,346 INFO L93 Difference]: Finished difference Result 267 states and 315 transitions. [2019-09-20 13:08:00,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:00,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:08:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:00,354 INFO L225 Difference]: With dead ends: 267 [2019-09-20 13:08:00,355 INFO L226 Difference]: Without dead ends: 157 [2019-09-20 13:08:00,359 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-09-20 13:08:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-09-20 13:08:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-09-20 13:08:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2019-09-20 13:08:00,384 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 60 [2019-09-20 13:08:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:00,384 INFO L475 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2019-09-20 13:08:00,384 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:00,384 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2019-09-20 13:08:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:08:00,388 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:00,388 INFO L407 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] [2019-09-20 13:08:00,388 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1388581610, now seen corresponding path program 1 times [2019-09-20 13:08:00,389 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:00,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:00,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:00,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:00,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:00,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:00,583 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:00,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:00,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:00,584 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand 7 states. [2019-09-20 13:08:01,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:01,167 INFO L93 Difference]: Finished difference Result 471 states and 572 transitions. [2019-09-20 13:08:01,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:08:01,167 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:08:01,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:01,171 INFO L225 Difference]: With dead ends: 471 [2019-09-20 13:08:01,171 INFO L226 Difference]: Without dead ends: 342 [2019-09-20 13:08:01,173 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:08:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-09-20 13:08:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 330. [2019-09-20 13:08:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2019-09-20 13:08:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 400 transitions. [2019-09-20 13:08:01,242 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 400 transitions. Word has length 65 [2019-09-20 13:08:01,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:01,244 INFO L475 AbstractCegarLoop]: Abstraction has 330 states and 400 transitions. [2019-09-20 13:08:01,244 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 400 transitions. [2019-09-20 13:08:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:08:01,253 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:01,253 INFO L407 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] [2019-09-20 13:08:01,254 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:01,254 INFO L82 PathProgramCache]: Analyzing trace with hash -262157671, now seen corresponding path program 1 times [2019-09-20 13:08:01,254 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:01,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:01,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:01,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:01,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:08:01,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:01,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:08:01,418 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:08:01,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:08:01,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:01,418 INFO L87 Difference]: Start difference. First operand 330 states and 400 transitions. Second operand 7 states. [2019-09-20 13:08:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:02,280 INFO L93 Difference]: Finished difference Result 832 states and 1080 transitions. [2019-09-20 13:08:02,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:08:02,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:08:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:02,286 INFO L225 Difference]: With dead ends: 832 [2019-09-20 13:08:02,286 INFO L226 Difference]: Without dead ends: 530 [2019-09-20 13:08:02,288 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:08:02,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2019-09-20 13:08:02,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 476. [2019-09-20 13:08:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-09-20 13:08:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 573 transitions. [2019-09-20 13:08:02,338 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 573 transitions. Word has length 70 [2019-09-20 13:08:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:02,338 INFO L475 AbstractCegarLoop]: Abstraction has 476 states and 573 transitions. [2019-09-20 13:08:02,338 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:08:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 573 transitions. [2019-09-20 13:08:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:08:02,342 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:02,342 INFO L407 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] [2019-09-20 13:08:02,342 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:02,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:02,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1621424268, now seen corresponding path program 1 times [2019-09-20 13:08:02,343 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:02,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:02,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:02,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:02,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:02,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:08:02,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:08:02,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:08:02,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:08:02,457 INFO L87 Difference]: Start difference. First operand 476 states and 573 transitions. Second operand 6 states. [2019-09-20 13:08:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:02,514 INFO L93 Difference]: Finished difference Result 934 states and 1147 transitions. [2019-09-20 13:08:02,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:08:02,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-20 13:08:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:02,521 INFO L225 Difference]: With dead ends: 934 [2019-09-20 13:08:02,521 INFO L226 Difference]: Without dead ends: 486 [2019-09-20 13:08:02,523 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:08:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-09-20 13:08:02,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2019-09-20 13:08:02,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-09-20 13:08:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2019-09-20 13:08:02,574 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 98 [2019-09-20 13:08:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:02,575 INFO L475 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2019-09-20 13:08:02,575 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:08:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2019-09-20 13:08:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:08:02,583 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:02,584 INFO L407 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] [2019-09-20 13:08:02,584 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:02,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:02,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1693810826, now seen corresponding path program 1 times [2019-09-20 13:08:02,584 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:02,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:02,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:02,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:02,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:02,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:08:02,696 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:08:02,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:08:02,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:02,697 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 8 states. [2019-09-20 13:08:02,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:02,745 INFO L93 Difference]: Finished difference Result 958 states and 1190 transitions. [2019-09-20 13:08:02,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:08:02,746 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-09-20 13:08:02,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:02,749 INFO L225 Difference]: With dead ends: 958 [2019-09-20 13:08:02,749 INFO L226 Difference]: Without dead ends: 500 [2019-09-20 13:08:02,751 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:08:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-09-20 13:08:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 494. [2019-09-20 13:08:02,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2019-09-20 13:08:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 591 transitions. [2019-09-20 13:08:02,785 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 591 transitions. Word has length 98 [2019-09-20 13:08:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:02,786 INFO L475 AbstractCegarLoop]: Abstraction has 494 states and 591 transitions. [2019-09-20 13:08:02,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:08:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 591 transitions. [2019-09-20 13:08:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-20 13:08:02,788 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:02,788 INFO L407 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] [2019-09-20 13:08:02,789 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:02,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:02,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1364045065, now seen corresponding path program 1 times [2019-09-20 13:08:02,789 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:02,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:02,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:02,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:02,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:02,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:08:02,896 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:08:02,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:08:02,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:02,897 INFO L87 Difference]: Start difference. First operand 494 states and 591 transitions. Second operand 4 states. [2019-09-20 13:08:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:03,192 INFO L93 Difference]: Finished difference Result 1578 states and 1976 transitions. [2019-09-20 13:08:03,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:08:03,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-09-20 13:08:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:03,200 INFO L225 Difference]: With dead ends: 1578 [2019-09-20 13:08:03,200 INFO L226 Difference]: Without dead ends: 1112 [2019-09-20 13:08:03,203 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:08:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-09-20 13:08:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1095. [2019-09-20 13:08:03,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2019-09-20 13:08:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1344 transitions. [2019-09-20 13:08:03,288 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1344 transitions. Word has length 98 [2019-09-20 13:08:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:03,288 INFO L475 AbstractCegarLoop]: Abstraction has 1095 states and 1344 transitions. [2019-09-20 13:08:03,289 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:08:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1344 transitions. [2019-09-20 13:08:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-20 13:08:03,291 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:03,292 INFO L407 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] [2019-09-20 13:08:03,293 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:03,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:03,293 INFO L82 PathProgramCache]: Analyzing trace with hash 884836017, now seen corresponding path program 1 times [2019-09-20 13:08:03,293 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:03,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:03,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:03,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:03,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:08:03,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:03,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:08:03,481 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:08:03,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:08:03,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:08:03,482 INFO L87 Difference]: Start difference. First operand 1095 states and 1344 transitions. Second operand 9 states. [2019-09-20 13:08:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:04,712 INFO L93 Difference]: Finished difference Result 2982 states and 3828 transitions. [2019-09-20 13:08:04,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:04,712 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2019-09-20 13:08:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:04,725 INFO L225 Difference]: With dead ends: 2982 [2019-09-20 13:08:04,726 INFO L226 Difference]: Without dead ends: 2111 [2019-09-20 13:08:04,730 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:04,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2019-09-20 13:08:04,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1872. [2019-09-20 13:08:04,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2019-09-20 13:08:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2259 transitions. [2019-09-20 13:08:04,866 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2259 transitions. Word has length 102 [2019-09-20 13:08:04,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:04,868 INFO L475 AbstractCegarLoop]: Abstraction has 1872 states and 2259 transitions. [2019-09-20 13:08:04,868 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:08:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2259 transitions. [2019-09-20 13:08:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-09-20 13:08:04,874 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:04,875 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:04,875 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:04,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1627137653, now seen corresponding path program 1 times [2019-09-20 13:08:04,876 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:04,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:04,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:04,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-20 13:08:05,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:05,130 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:05,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:05,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-20 13:08:05,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:05,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:05,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-09-20 13:08:05,669 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-20 13:08:05,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-20 13:08:05,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-20 13:08:05,669 INFO L87 Difference]: Start difference. First operand 1872 states and 2259 transitions. Second operand 16 states. [2019-09-20 13:08:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:07,280 INFO L93 Difference]: Finished difference Result 4245 states and 5324 transitions. [2019-09-20 13:08:07,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-09-20 13:08:07,281 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2019-09-20 13:08:07,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:07,299 INFO L225 Difference]: With dead ends: 4245 [2019-09-20 13:08:07,299 INFO L226 Difference]: Without dead ends: 2591 [2019-09-20 13:08:07,306 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2019-09-20 13:08:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2019-09-20 13:08:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2329. [2019-09-20 13:08:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2329 states. [2019-09-20 13:08:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 2757 transitions. [2019-09-20 13:08:07,463 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 2757 transitions. Word has length 180 [2019-09-20 13:08:07,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:07,464 INFO L475 AbstractCegarLoop]: Abstraction has 2329 states and 2757 transitions. [2019-09-20 13:08:07,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-20 13:08:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 2757 transitions. [2019-09-20 13:08:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-09-20 13:08:07,474 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:07,475 INFO L407 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:07,475 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:07,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:07,476 INFO L82 PathProgramCache]: Analyzing trace with hash -489961037, now seen corresponding path program 1 times [2019-09-20 13:08:07,476 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:07,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:07,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:07,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2019-09-20 13:08:07,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:07,681 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:07,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:07,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-20 13:08:07,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 212 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-20 13:08:08,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:08,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2019-09-20 13:08:08,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:08:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:08:08,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:08:08,300 INFO L87 Difference]: Start difference. First operand 2329 states and 2757 transitions. Second operand 19 states. [2019-09-20 13:08:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:15,958 INFO L93 Difference]: Finished difference Result 9231 states and 13201 transitions. [2019-09-20 13:08:15,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-09-20 13:08:15,959 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 305 [2019-09-20 13:08:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:16,005 INFO L225 Difference]: With dead ends: 9231 [2019-09-20 13:08:16,005 INFO L226 Difference]: Without dead ends: 6938 [2019-09-20 13:08:16,020 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=595, Invalid=3827, Unknown=0, NotChecked=0, Total=4422 [2019-09-20 13:08:16,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6938 states. [2019-09-20 13:08:16,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6938 to 4917. [2019-09-20 13:08:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4917 states. [2019-09-20 13:08:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4917 states to 4917 states and 5640 transitions. [2019-09-20 13:08:16,423 INFO L78 Accepts]: Start accepts. Automaton has 4917 states and 5640 transitions. Word has length 305 [2019-09-20 13:08:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:16,424 INFO L475 AbstractCegarLoop]: Abstraction has 4917 states and 5640 transitions. [2019-09-20 13:08:16,424 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:08:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4917 states and 5640 transitions. [2019-09-20 13:08:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-09-20 13:08:16,443 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:16,443 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:16,444 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:16,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:16,444 INFO L82 PathProgramCache]: Analyzing trace with hash -728112061, now seen corresponding path program 1 times [2019-09-20 13:08:16,445 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:16,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:16,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 100 proven. 61 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2019-09-20 13:08:16,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:16,709 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:16,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:17,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 13:08:17,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 249 proven. 18 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-20 13:08:17,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:17,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-09-20 13:08:17,207 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:08:17,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:08:17,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:08:17,207 INFO L87 Difference]: Start difference. First operand 4917 states and 5640 transitions. Second operand 20 states. [2019-09-20 13:08:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:19,338 INFO L93 Difference]: Finished difference Result 9384 states and 10830 transitions. [2019-09-20 13:08:19,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:08:19,339 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 321 [2019-09-20 13:08:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:19,371 INFO L225 Difference]: With dead ends: 9384 [2019-09-20 13:08:19,371 INFO L226 Difference]: Without dead ends: 4933 [2019-09-20 13:08:19,384 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=830, Unknown=0, NotChecked=0, Total=992 [2019-09-20 13:08:19,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4933 states. [2019-09-20 13:08:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4933 to 4921. [2019-09-20 13:08:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4921 states. [2019-09-20 13:08:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4921 states to 4921 states and 5634 transitions. [2019-09-20 13:08:19,692 INFO L78 Accepts]: Start accepts. Automaton has 4921 states and 5634 transitions. Word has length 321 [2019-09-20 13:08:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:19,692 INFO L475 AbstractCegarLoop]: Abstraction has 4921 states and 5634 transitions. [2019-09-20 13:08:19,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:08:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4921 states and 5634 transitions. [2019-09-20 13:08:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2019-09-20 13:08:19,716 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:19,716 INFO L407 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:08:19,717 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:19,717 INFO L82 PathProgramCache]: Analyzing trace with hash -517114364, now seen corresponding path program 1 times [2019-09-20 13:08:19,717 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:19,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:19,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:19,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 98 proven. 46 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-09-20 13:08:20,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:20,029 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:20,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:20,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 1343 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:08:20,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 175 proven. 16 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Stream closed [2019-09-20 13:08:20,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:20,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 14 [2019-09-20 13:08:20,527 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:08:20,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:08:20,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:08:20,528 INFO L87 Difference]: Start difference. First operand 4921 states and 5634 transitions. Second operand 14 states. [2019-09-20 13:08:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:23,785 INFO L93 Difference]: Finished difference Result 11075 states and 13926 transitions. [2019-09-20 13:08:23,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-20 13:08:23,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 322 [2019-09-20 13:08:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:23,841 INFO L225 Difference]: With dead ends: 11075 [2019-09-20 13:08:23,841 INFO L226 Difference]: Without dead ends: 8112 [2019-09-20 13:08:23,853 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 341 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:08:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2019-09-20 13:08:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 6141. [2019-09-20 13:08:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2019-09-20 13:08:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 7028 transitions. [2019-09-20 13:08:24,241 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 7028 transitions. Word has length 322 [2019-09-20 13:08:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:24,243 INFO L475 AbstractCegarLoop]: Abstraction has 6141 states and 7028 transitions. [2019-09-20 13:08:24,244 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:08:24,244 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 7028 transitions. [2019-09-20 13:08:24,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2019-09-20 13:08:24,268 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:24,268 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:24,269 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1972990221, now seen corresponding path program 1 times [2019-09-20 13:08:24,269 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:24,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:24,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:24,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2019-09-20 13:08:24,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:08:24,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:08:24,455 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:08:24,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:08:24,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:24,456 INFO L87 Difference]: Start difference. First operand 6141 states and 7028 transitions. Second operand 3 states. [2019-09-20 13:08:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:08:24,761 INFO L93 Difference]: Finished difference Result 9938 states and 11407 transitions. [2019-09-20 13:08:24,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:08:24,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 369 [2019-09-20 13:08:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:08:24,786 INFO L225 Difference]: With dead ends: 9938 [2019-09-20 13:08:24,786 INFO L226 Difference]: Without dead ends: 3883 [2019-09-20 13:08:24,807 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:08:24,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2019-09-20 13:08:25,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 3793. [2019-09-20 13:08:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3793 states. [2019-09-20 13:08:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 4273 transitions. [2019-09-20 13:08:25,233 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 4273 transitions. Word has length 369 [2019-09-20 13:08:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:08:25,234 INFO L475 AbstractCegarLoop]: Abstraction has 3793 states and 4273 transitions. [2019-09-20 13:08:25,234 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:08:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 4273 transitions. [2019-09-20 13:08:25,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2019-09-20 13:08:25,248 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:08:25,249 INFO L407 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-20 13:08:25,249 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:08:25,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:08:25,249 INFO L82 PathProgramCache]: Analyzing trace with hash 45883664, now seen corresponding path program 1 times [2019-09-20 13:08:25,250 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:08:25,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:08:25,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:25,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:25,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:08:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 119 proven. 56 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2019-09-20 13:08:25,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:08:25,580 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:08:25,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:08:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:08:25,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:08:25,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:08:25,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:08:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 329 proven. 18 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-09-20 13:08:26,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:08:26,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-09-20 13:08:26,089 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:08:26,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:08:26,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:08:26,090 INFO L87 Difference]: Start difference. First operand 3793 states and 4273 transitions. Second operand 15 states.