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_spec3_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:37:49,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:37:49,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:37:49,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:37:49,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:37:49,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:37:49,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:37:49,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:37:49,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:37:49,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:37:49,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:37:49,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:37:49,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:37:49,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:37:49,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:37:49,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:37:49,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:37:49,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:37:49,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:37:49,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:37:49,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:37:49,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:37:49,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:37:49,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:37:49,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:37:49,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:37:49,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:37:49,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:37:49,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:37:49,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:37:49,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:37:49,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:37:49,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:37:49,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:37:49,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:37:49,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:37:49,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:37:49,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:37:49,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:37:49,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:37:49,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:37:49,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:37:49,290 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:37:49,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:37:49,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:37:49,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:37:49,292 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:37:49,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:37:49,293 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:37:49,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:37:49,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:37:49,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:37:49,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:37:49,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:37:49,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:37:49,294 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:37:49,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:37:49,294 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:37:49,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:37:49,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:37:49,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:37:49,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:37:49,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:37:49,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:49,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:37:49,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:37:49,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:37:49,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:37:49,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:37:49,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:37:49,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:37:49,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:37:49,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:37:49,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:37:49,632 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:37:49,632 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:37:49,633 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c [2019-10-13 19:37:49,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820d12a79/001bdc9f26ef4174a4a48523a9883d5f/FLAGdf3f77e74 [2019-10-13 19:37:50,181 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:37:50,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c [2019-10-13 19:37:50,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820d12a79/001bdc9f26ef4174a4a48523a9883d5f/FLAGdf3f77e74 [2019-10-13 19:37:50,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/820d12a79/001bdc9f26ef4174a4a48523a9883d5f [2019-10-13 19:37:50,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:37:50,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:37:50,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:50,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:37:50,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:37:50,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:50,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9061149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:50, skipping insertion in model container [2019-10-13 19:37:50,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:50" (1/1) ... [2019-10-13 19:37:50,550 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:37:50,604 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:37:51,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:51,025 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:37:51,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:37:51,161 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:37:51,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51 WrapperNode [2019-10-13 19:37:51,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:37:51,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:37:51,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:37:51,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:37:51,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (1/1) ... [2019-10-13 19:37:51,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (1/1) ... [2019-10-13 19:37:51,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (1/1) ... [2019-10-13 19:37:51,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (1/1) ... [2019-10-13 19:37:51,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (1/1) ... [2019-10-13 19:37:51,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (1/1) ... [2019-10-13 19:37:51,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (1/1) ... [2019-10-13 19:37:51,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:37:51,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:37:51,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:37:51,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:37:51,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:37:51,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:37:51,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:37:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:37:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:37:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:37:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:37:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:37:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:37:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:37:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:37:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:37:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:37:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:37:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:37:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:37:51,349 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:37:51,350 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:37:51,350 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:37:51,350 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:37:51,350 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:37:51,350 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:37:51,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:37:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:37:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:37:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:37:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:37:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:37:51,351 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:37:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:37:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:37:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:37:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:51,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:51,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:37:51,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:37:51,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:37:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:37:51,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:37:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:37:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:37:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:37:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:37:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:37:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-13 19:37:51,354 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:37:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:37:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:37:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:37:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:37:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:37:51,355 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:37:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:37:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:37:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:37:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:37:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:37:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:37:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:37:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:37:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:37:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:37:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:37:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:37:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:37:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:37:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:37:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:37:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:37:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 19:37:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:37:51,358 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:37:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:37:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:37:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:37:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:37:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:37:51,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:37:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:37:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:37:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:37:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:37:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:37:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:37:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:37:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:37:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:37:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:37:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:37:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:37:52,495 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:37:52,495 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:37:52,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:52 BoogieIcfgContainer [2019-10-13 19:37:52,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:37:52,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:37:52,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:37:52,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:37:52,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:50" (1/3) ... [2019-10-13 19:37:52,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1000dc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:52, skipping insertion in model container [2019-10-13 19:37:52,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:51" (2/3) ... [2019-10-13 19:37:52,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1000dc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:37:52, skipping insertion in model container [2019-10-13 19:37:52,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:37:52" (3/3) ... [2019-10-13 19:37:52,505 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product45.cil.c [2019-10-13 19:37:52,514 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:37:52,522 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:37:52,531 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:37:52,557 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:37:52,558 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:37:52,558 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:37:52,558 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:37:52,558 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:37:52,558 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:37:52,559 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:37:52,559 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:37:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2019-10-13 19:37:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:37:52,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:52,593 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:52,595 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:52,600 INFO L82 PathProgramCache]: Analyzing trace with hash -2079927920, now seen corresponding path program 1 times [2019-10-13 19:37:52,609 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:52,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631327115] [2019-10-13 19:37:52,610 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,610 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:52,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,280 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:53,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631327115] [2019-10-13 19:37:53,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:53,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:37:53,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990251265] [2019-10-13 19:37:53,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:37:53,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:53,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:37:53,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:53,387 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2019-10-13 19:37:54,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:54,572 INFO L93 Difference]: Finished difference Result 315 states and 412 transitions. [2019-10-13 19:37:54,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:37:54,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 19:37:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:54,597 INFO L225 Difference]: With dead ends: 315 [2019-10-13 19:37:54,598 INFO L226 Difference]: Without dead ends: 170 [2019-10-13 19:37:54,605 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:37:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-13 19:37:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2019-10-13 19:37:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-13 19:37:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2019-10-13 19:37:54,694 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 52 [2019-10-13 19:37:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:54,695 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2019-10-13 19:37:54,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:37:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2019-10-13 19:37:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:37:54,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:54,699 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:54,699 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:54,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:54,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1292445192, now seen corresponding path program 1 times [2019-10-13 19:37:54,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:54,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008992335] [2019-10-13 19:37:54,700 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:54,700 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:54,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,015 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:55,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008992335] [2019-10-13 19:37:55,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:55,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:37:55,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983987353] [2019-10-13 19:37:55,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:37:55,053 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:55,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:37:55,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:37:55,054 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand 4 states. [2019-10-13 19:37:55,495 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:37:56,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:56,304 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2019-10-13 19:37:56,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:37:56,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:37:56,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:56,307 INFO L225 Difference]: With dead ends: 248 [2019-10-13 19:37:56,307 INFO L226 Difference]: Without dead ends: 154 [2019-10-13 19:37:56,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:37:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-13 19:37:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2019-10-13 19:37:56,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-13 19:37:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2019-10-13 19:37:56,348 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 53 [2019-10-13 19:37:56,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:56,349 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2019-10-13 19:37:56,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:37:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2019-10-13 19:37:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:37:56,351 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:56,351 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:56,352 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:56,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1103725481, now seen corresponding path program 1 times [2019-10-13 19:37:56,352 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:56,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756462489] [2019-10-13 19:37:56,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:56,353 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:56,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,752 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:56,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756462489] [2019-10-13 19:37:56,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:56,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:37:56,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227310032] [2019-10-13 19:37:56,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:37:56,890 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:56,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:37:56,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:37:56,891 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 8 states. [2019-10-13 19:37:57,299 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:37:57,616 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:37:57,911 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:58,156 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:37:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:37:59,390 INFO L93 Difference]: Finished difference Result 257 states and 317 transitions. [2019-10-13 19:37:59,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:37:59,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:37:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:37:59,394 INFO L225 Difference]: With dead ends: 257 [2019-10-13 19:37:59,394 INFO L226 Difference]: Without dead ends: 154 [2019-10-13 19:37:59,395 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:37:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-13 19:37:59,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2019-10-13 19:37:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-13 19:37:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2019-10-13 19:37:59,429 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 57 [2019-10-13 19:37:59,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:37:59,429 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2019-10-13 19:37:59,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:37:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2019-10-13 19:37:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:37:59,432 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:37:59,432 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:37:59,433 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:37:59,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:37:59,433 INFO L82 PathProgramCache]: Analyzing trace with hash -2144023801, now seen corresponding path program 1 times [2019-10-13 19:37:59,433 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:37:59,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943135021] [2019-10-13 19:37:59,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:59,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:37:59,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:37:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,702 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:37:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:37:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:37:59,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943135021] [2019-10-13 19:37:59,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:37:59,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:37:59,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697770513] [2019-10-13 19:37:59,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:37:59,776 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:37:59,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:37:59,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:37:59,776 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 6 states. [2019-10-13 19:38:00,142 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:01,338 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:02,130 INFO L93 Difference]: Finished difference Result 366 states and 452 transitions. [2019-10-13 19:38:02,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:38:02,131 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-13 19:38:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:02,134 INFO L225 Difference]: With dead ends: 366 [2019-10-13 19:38:02,135 INFO L226 Difference]: Without dead ends: 263 [2019-10-13 19:38:02,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:38:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2019-10-13 19:38:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 222. [2019-10-13 19:38:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2019-10-13 19:38:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 254 transitions. [2019-10-13 19:38:02,186 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 254 transitions. Word has length 70 [2019-10-13 19:38:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:02,186 INFO L462 AbstractCegarLoop]: Abstraction has 222 states and 254 transitions. [2019-10-13 19:38:02,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:38:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 254 transitions. [2019-10-13 19:38:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:38:02,189 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:02,189 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:02,189 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:02,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:02,190 INFO L82 PathProgramCache]: Analyzing trace with hash 568030072, now seen corresponding path program 1 times [2019-10-13 19:38:02,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:02,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439243533] [2019-10-13 19:38:02,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:02,190 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:02,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,477 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:02,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439243533] [2019-10-13 19:38:02,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:02,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:02,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96119000] [2019-10-13 19:38:02,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:02,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:02,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:02,569 INFO L87 Difference]: Start difference. First operand 222 states and 254 transitions. Second operand 8 states. [2019-10-13 19:38:03,064 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:04,541 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:04,844 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:05,104 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:05,361 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:06,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:06,047 INFO L93 Difference]: Finished difference Result 593 states and 738 transitions. [2019-10-13 19:38:06,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:38:06,048 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-13 19:38:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:06,051 INFO L225 Difference]: With dead ends: 593 [2019-10-13 19:38:06,051 INFO L226 Difference]: Without dead ends: 395 [2019-10-13 19:38:06,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-10-13 19:38:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 355. [2019-10-13 19:38:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2019-10-13 19:38:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 414 transitions. [2019-10-13 19:38:06,121 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 414 transitions. Word has length 84 [2019-10-13 19:38:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:06,122 INFO L462 AbstractCegarLoop]: Abstraction has 355 states and 414 transitions. [2019-10-13 19:38:06,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:06,122 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 414 transitions. [2019-10-13 19:38:06,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:38:06,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:06,124 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:06,124 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:06,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:06,125 INFO L82 PathProgramCache]: Analyzing trace with hash 538208210, now seen corresponding path program 1 times [2019-10-13 19:38:06,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:06,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717652202] [2019-10-13 19:38:06,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:06,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:06,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,457 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:06,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717652202] [2019-10-13 19:38:06,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:06,571 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:38:06,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510733554] [2019-10-13 19:38:06,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:38:06,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:06,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:38:06,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:38:06,572 INFO L87 Difference]: Start difference. First operand 355 states and 414 transitions. Second operand 10 states. [2019-10-13 19:38:07,187 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:08,825 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:09,114 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:09,370 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:09,614 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:09,934 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:11,024 INFO L93 Difference]: Finished difference Result 804 states and 1017 transitions. [2019-10-13 19:38:11,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:38:11,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-13 19:38:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:11,029 INFO L225 Difference]: With dead ends: 804 [2019-10-13 19:38:11,029 INFO L226 Difference]: Without dead ends: 595 [2019-10-13 19:38:11,030 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:38:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-13 19:38:11,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 527. [2019-10-13 19:38:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-13 19:38:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 624 transitions. [2019-10-13 19:38:11,121 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 624 transitions. Word has length 88 [2019-10-13 19:38:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:11,121 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 624 transitions. [2019-10-13 19:38:11,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:38:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 624 transitions. [2019-10-13 19:38:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:38:11,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:11,124 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:11,124 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:11,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:11,124 INFO L82 PathProgramCache]: Analyzing trace with hash -384475373, now seen corresponding path program 1 times [2019-10-13 19:38:11,124 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:11,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356359420] [2019-10-13 19:38:11,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:11,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:11,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,368 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:11,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356359420] [2019-10-13 19:38:11,475 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:11,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:38:11,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983111308] [2019-10-13 19:38:11,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:11,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:38:11,477 INFO L87 Difference]: Start difference. First operand 527 states and 624 transitions. Second operand 8 states. [2019-10-13 19:38:12,452 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:12,689 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:12,959 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:13,983 INFO L93 Difference]: Finished difference Result 968 states and 1189 transitions. [2019-10-13 19:38:13,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:38:13,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-13 19:38:13,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:13,988 INFO L225 Difference]: With dead ends: 968 [2019-10-13 19:38:13,989 INFO L226 Difference]: Without dead ends: 583 [2019-10-13 19:38:13,990 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-10-13 19:38:14,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 527. [2019-10-13 19:38:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-13 19:38:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 623 transitions. [2019-10-13 19:38:14,124 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 623 transitions. Word has length 88 [2019-10-13 19:38:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:14,125 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 623 transitions. [2019-10-13 19:38:14,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 623 transitions. [2019-10-13 19:38:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-13 19:38:14,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:14,128 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:14,128 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:14,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:14,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1228480875, now seen corresponding path program 1 times [2019-10-13 19:38:14,128 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:14,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380815924] [2019-10-13 19:38:14,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:14,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,379 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:14,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380815924] [2019-10-13 19:38:14,516 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:14,517 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:38:14,517 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312811821] [2019-10-13 19:38:14,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:38:14,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:14,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:38:14,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:38:14,518 INFO L87 Difference]: Start difference. First operand 527 states and 623 transitions. Second operand 12 states. [2019-10-13 19:38:15,198 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:15,446 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:15,690 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:16,663 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:16,926 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:38:17,200 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:17,451 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:18,547 INFO L93 Difference]: Finished difference Result 1091 states and 1345 transitions. [2019-10-13 19:38:18,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:38:18,548 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-13 19:38:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:18,553 INFO L225 Difference]: With dead ends: 1091 [2019-10-13 19:38:18,553 INFO L226 Difference]: Without dead ends: 588 [2019-10-13 19:38:18,555 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:38:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-13 19:38:18,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 534. [2019-10-13 19:38:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2019-10-13 19:38:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 630 transitions. [2019-10-13 19:38:18,652 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 630 transitions. Word has length 88 [2019-10-13 19:38:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:18,653 INFO L462 AbstractCegarLoop]: Abstraction has 534 states and 630 transitions. [2019-10-13 19:38:18,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:38:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 630 transitions. [2019-10-13 19:38:18,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-13 19:38:18,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:18,656 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:18,656 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:18,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:18,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1576561429, now seen corresponding path program 1 times [2019-10-13 19:38:18,657 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:18,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259667310] [2019-10-13 19:38:18,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:18,657 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:18,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,016 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:19,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259667310] [2019-10-13 19:38:19,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139917781] [2019-10-13 19:38:19,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:38:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:19,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-13 19:38:19,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:38:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:38:19,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:38:19,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-13 19:38:19,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402910213] [2019-10-13 19:38:19,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:38:19,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:19,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:38:19,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:19,539 INFO L87 Difference]: Start difference. First operand 534 states and 630 transitions. Second operand 8 states. [2019-10-13 19:38:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:20,139 INFO L93 Difference]: Finished difference Result 1541 states and 1858 transitions. [2019-10-13 19:38:20,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:38:20,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2019-10-13 19:38:20,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:20,146 INFO L225 Difference]: With dead ends: 1541 [2019-10-13 19:38:20,147 INFO L226 Difference]: Without dead ends: 1031 [2019-10-13 19:38:20,149 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-13 19:38:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2019-10-13 19:38:20,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1028. [2019-10-13 19:38:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2019-10-13 19:38:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1216 transitions. [2019-10-13 19:38:20,332 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1216 transitions. Word has length 100 [2019-10-13 19:38:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:20,333 INFO L462 AbstractCegarLoop]: Abstraction has 1028 states and 1216 transitions. [2019-10-13 19:38:20,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:38:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1216 transitions. [2019-10-13 19:38:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:38:20,336 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:20,336 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:20,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:38:20,541 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:20,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:20,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1589016711, now seen corresponding path program 1 times [2019-10-13 19:38:20,542 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:20,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100794514] [2019-10-13 19:38:20,543 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:20,543 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:20,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,920 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:38:21,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100794514] [2019-10-13 19:38:21,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:21,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 19:38:21,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641757285] [2019-10-13 19:38:21,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 19:38:21,068 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:21,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 19:38:21,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:38:21,069 INFO L87 Difference]: Start difference. First operand 1028 states and 1216 transitions. Second operand 14 states. [2019-10-13 19:38:21,923 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:22,189 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:22,448 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:38:23,057 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:23,952 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:38:24,418 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:25,100 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:38:25,381 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:25,662 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:38:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:38:27,558 INFO L93 Difference]: Finished difference Result 2156 states and 2717 transitions. [2019-10-13 19:38:27,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 19:38:27,559 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 104 [2019-10-13 19:38:27,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:38:27,566 INFO L225 Difference]: With dead ends: 2156 [2019-10-13 19:38:27,566 INFO L226 Difference]: Without dead ends: 1152 [2019-10-13 19:38:27,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=212, Invalid=780, Unknown=0, NotChecked=0, Total=992 [2019-10-13 19:38:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2019-10-13 19:38:27,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 962. [2019-10-13 19:38:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2019-10-13 19:38:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1124 transitions. [2019-10-13 19:38:27,741 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1124 transitions. Word has length 104 [2019-10-13 19:38:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:38:27,741 INFO L462 AbstractCegarLoop]: Abstraction has 962 states and 1124 transitions. [2019-10-13 19:38:27,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 19:38:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1124 transitions. [2019-10-13 19:38:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 19:38:27,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:38:27,745 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:38:27,745 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:38:27,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:38:27,745 INFO L82 PathProgramCache]: Analyzing trace with hash -109534195, now seen corresponding path program 1 times [2019-10-13 19:38:27,746 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:38:27,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344844619] [2019-10-13 19:38:27,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:27,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:38:27,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:38:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,082 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:38:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:38:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:38:28,219 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344844619] [2019-10-13 19:38:28,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:38:28,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 19:38:28,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422298133] [2019-10-13 19:38:28,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:38:28,221 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:38:28,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:38:28,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:38:28,221 INFO L87 Difference]: Start difference. First operand 962 states and 1124 transitions. Second operand 13 states.