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 0.1.24-13a467a-m [2019-10-14 23:36:53,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:53,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:53,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:53,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:53,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:53,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:53,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:53,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:53,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:53,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:53,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:53,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:53,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:53,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:53,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:53,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:53,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:53,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:53,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:53,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:53,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:53,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:53,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:53,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:53,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:53,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:53,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:53,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:53,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:53,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:53,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:53,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:53,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:53,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:53,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:53,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:53,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:53,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:53,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:53,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:53,344 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 [2019-10-14 23:36:53,369 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:53,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:53,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:53,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:53,371 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:53,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:53,372 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:53,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:53,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:53,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:53,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:53,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:53,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:53,375 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:53,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:53,375 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:53,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:53,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:53,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:53,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:53,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:53,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:53,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:53,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:53,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:53,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:53,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:53,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:53,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:53,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:53,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:53,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:53,640 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:53,640 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:53,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c [2019-10-14 23:36:53,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76bfa2538/e9b68acc0703403a8e7f012d19ceca23/FLAGf35a12fcb [2019-10-14 23:36:54,306 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:54,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c [2019-10-14 23:36:54,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76bfa2538/e9b68acc0703403a8e7f012d19ceca23/FLAGf35a12fcb [2019-10-14 23:36:54,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76bfa2538/e9b68acc0703403a8e7f012d19ceca23 [2019-10-14 23:36:54,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:54,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:54,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:54,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:54,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:54,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:54" (1/1) ... [2019-10-14 23:36:54,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103d845f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:54, skipping insertion in model container [2019-10-14 23:36:54,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:54" (1/1) ... [2019-10-14 23:36:54,631 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:54,686 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:55,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:55,166 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:55,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:55,284 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:55,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55 WrapperNode [2019-10-14 23:36:55,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:55,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:55,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:55,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:55,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (1/1) ... [2019-10-14 23:36:55,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:55,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:55,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:55,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:55,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (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 [2019-10-14 23:36:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:36:55,446 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:55,447 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:55,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:55,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:55,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:55,451 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:55,452 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:36:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:55,456 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:56,595 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:56,595 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:56,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:56 BoogieIcfgContainer [2019-10-14 23:36:56,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:56,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:56,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:56,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:56,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:54" (1/3) ... [2019-10-14 23:36:56,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5021f572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:56, skipping insertion in model container [2019-10-14 23:36:56,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:55" (2/3) ... [2019-10-14 23:36:56,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5021f572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:56, skipping insertion in model container [2019-10-14 23:36:56,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:56" (3/3) ... [2019-10-14 23:36:56,606 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product45.cil.c [2019-10-14 23:36:56,615 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:56,627 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:56,638 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:56,670 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:56,670 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:56,670 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:56,670 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:56,671 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:56,671 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:56,671 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:56,671 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2019-10-14 23:36:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:56,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:56,706 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] [2019-10-14 23:36:56,708 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:56,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2079927920, now seen corresponding path program 1 times [2019-10-14 23:36:56,721 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:56,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403328993] [2019-10-14 23:36:56,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:56,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:56,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,403 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:57,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403328993] [2019-10-14 23:36:57,470 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:57,470 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:36:57,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172399926] [2019-10-14 23:36:57,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:36:57,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:57,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:36:57,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:36:57,494 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2019-10-14 23:36:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:58,769 INFO L93 Difference]: Finished difference Result 315 states and 412 transitions. [2019-10-14 23:36:58,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:36:58,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:36:58,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:58,787 INFO L225 Difference]: With dead ends: 315 [2019-10-14 23:36:58,787 INFO L226 Difference]: Without dead ends: 170 [2019-10-14 23:36:58,792 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 [2019-10-14 23:36:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-10-14 23:36:58,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2019-10-14 23:36:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-14 23:36:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2019-10-14 23:36:58,922 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 52 [2019-10-14 23:36:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:58,923 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2019-10-14 23:36:58,923 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:36:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2019-10-14 23:36:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:36:58,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:58,941 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] [2019-10-14 23:36:58,941 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:58,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:58,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1292445192, now seen corresponding path program 1 times [2019-10-14 23:36:58,942 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:58,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586564717] [2019-10-14 23:36:58,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:58,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:58,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,396 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:36:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:59,436 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586564717] [2019-10-14 23:36:59,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:59,437 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:59,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406308533] [2019-10-14 23:36:59,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:59,439 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:59,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:59,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:59,440 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand 4 states. [2019-10-14 23:36:59,922 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:00,841 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2019-10-14 23:37:00,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:37:00,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:37:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:00,844 INFO L225 Difference]: With dead ends: 248 [2019-10-14 23:37:00,845 INFO L226 Difference]: Without dead ends: 154 [2019-10-14 23:37:00,846 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:37:00,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-14 23:37:00,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2019-10-14 23:37:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-14 23:37:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2019-10-14 23:37:00,883 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 53 [2019-10-14 23:37:00,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:00,884 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2019-10-14 23:37:00,884 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:37:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2019-10-14 23:37:00,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:37:00,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:00,887 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] [2019-10-14 23:37:00,887 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:00,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:00,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1103725481, now seen corresponding path program 1 times [2019-10-14 23:37:00,888 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:00,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531076145] [2019-10-14 23:37:00,888 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:00,888 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:00,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,261 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:01,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531076145] [2019-10-14 23:37:01,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:01,407 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:01,408 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868626218] [2019-10-14 23:37:01,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:01,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:01,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:01,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:01,410 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 8 states. [2019-10-14 23:37:01,936 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:02,318 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:02,633 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:02,901 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:04,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:04,289 INFO L93 Difference]: Finished difference Result 257 states and 317 transitions. [2019-10-14 23:37:04,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:04,290 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:37:04,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:04,293 INFO L225 Difference]: With dead ends: 257 [2019-10-14 23:37:04,293 INFO L226 Difference]: Without dead ends: 154 [2019-10-14 23:37:04,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-14 23:37:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2019-10-14 23:37:04,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-14 23:37:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2019-10-14 23:37:04,327 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 57 [2019-10-14 23:37:04,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:04,327 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2019-10-14 23:37:04,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2019-10-14 23:37:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:37:04,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:04,329 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] [2019-10-14 23:37:04,329 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:04,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2144023801, now seen corresponding path program 1 times [2019-10-14 23:37:04,330 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:04,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932311091] [2019-10-14 23:37:04,330 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,331 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:04,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,681 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:04,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932311091] [2019-10-14 23:37:04,760 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:04,760 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:37:04,760 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896623857] [2019-10-14 23:37:04,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:37:04,761 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:04,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:37:04,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:37:04,762 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 6 states. [2019-10-14 23:37:05,165 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:06,461 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:07,304 INFO L93 Difference]: Finished difference Result 366 states and 452 transitions. [2019-10-14 23:37:07,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:37:07,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-14 23:37:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:07,308 INFO L225 Difference]: With dead ends: 366 [2019-10-14 23:37:07,309 INFO L226 Difference]: Without dead ends: 263 [2019-10-14 23:37:07,311 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:37:07,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2019-10-14 23:37:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 222. [2019-10-14 23:37:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2019-10-14 23:37:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 254 transitions. [2019-10-14 23:37:07,357 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 254 transitions. Word has length 70 [2019-10-14 23:37:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:07,357 INFO L462 AbstractCegarLoop]: Abstraction has 222 states and 254 transitions. [2019-10-14 23:37:07,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 254 transitions. [2019-10-14 23:37:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:37:07,359 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:07,359 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] [2019-10-14 23:37:07,360 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash 568030072, now seen corresponding path program 1 times [2019-10-14 23:37:07,360 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:07,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702881718] [2019-10-14 23:37:07,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:07,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:07,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,707 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:07,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702881718] [2019-10-14 23:37:07,856 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:07,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:07,857 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265034477] [2019-10-14 23:37:07,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:07,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:07,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:07,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:07,861 INFO L87 Difference]: Start difference. First operand 222 states and 254 transitions. Second operand 8 states. [2019-10-14 23:37:08,476 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:10,077 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:10,363 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:10,621 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:10,882 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:11,619 INFO L93 Difference]: Finished difference Result 593 states and 738 transitions. [2019-10-14 23:37:11,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:11,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-14 23:37:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:11,624 INFO L225 Difference]: With dead ends: 593 [2019-10-14 23:37:11,624 INFO L226 Difference]: Without dead ends: 395 [2019-10-14 23:37:11,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-10-14 23:37:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 355. [2019-10-14 23:37:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2019-10-14 23:37:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 414 transitions. [2019-10-14 23:37:11,698 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 414 transitions. Word has length 84 [2019-10-14 23:37:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:11,698 INFO L462 AbstractCegarLoop]: Abstraction has 355 states and 414 transitions. [2019-10-14 23:37:11,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 414 transitions. [2019-10-14 23:37:11,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:37:11,699 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:11,700 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] [2019-10-14 23:37:11,700 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:11,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:11,700 INFO L82 PathProgramCache]: Analyzing trace with hash 538208210, now seen corresponding path program 1 times [2019-10-14 23:37:11,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:11,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378865982] [2019-10-14 23:37:11,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:11,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:11,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,998 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:12,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378865982] [2019-10-14 23:37:12,164 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:12,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:12,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831905796] [2019-10-14 23:37:12,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:12,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:12,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:12,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:12,166 INFO L87 Difference]: Start difference. First operand 355 states and 414 transitions. Second operand 10 states. [2019-10-14 23:37:12,711 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:14,356 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:14,657 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:14,928 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:15,211 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:15,526 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:16,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:16,630 INFO L93 Difference]: Finished difference Result 804 states and 1017 transitions. [2019-10-14 23:37:16,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:16,631 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:37:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:16,636 INFO L225 Difference]: With dead ends: 804 [2019-10-14 23:37:16,637 INFO L226 Difference]: Without dead ends: 595 [2019-10-14 23:37:16,638 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:37:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-14 23:37:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 527. [2019-10-14 23:37:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-14 23:37:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 624 transitions. [2019-10-14 23:37:16,748 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 624 transitions. Word has length 88 [2019-10-14 23:37:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:16,749 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 624 transitions. [2019-10-14 23:37:16,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 624 transitions. [2019-10-14 23:37:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:37:16,751 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:16,751 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] [2019-10-14 23:37:16,751 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:16,752 INFO L82 PathProgramCache]: Analyzing trace with hash -384475373, now seen corresponding path program 1 times [2019-10-14 23:37:16,752 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:16,752 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768131021] [2019-10-14 23:37:16,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:16,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:16,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,011 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:17,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768131021] [2019-10-14 23:37:17,147 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:17,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:17,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562767046] [2019-10-14 23:37:17,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:17,149 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:17,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:17,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:17,151 INFO L87 Difference]: Start difference. First operand 527 states and 624 transitions. Second operand 8 states. [2019-10-14 23:37:18,402 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:18,664 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:18,934 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:20,043 INFO L93 Difference]: Finished difference Result 968 states and 1189 transitions. [2019-10-14 23:37:20,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:20,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-14 23:37:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:20,052 INFO L225 Difference]: With dead ends: 968 [2019-10-14 23:37:20,053 INFO L226 Difference]: Without dead ends: 583 [2019-10-14 23:37:20,055 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 [2019-10-14 23:37:20,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-10-14 23:37:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 527. [2019-10-14 23:37:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-14 23:37:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 623 transitions. [2019-10-14 23:37:20,165 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 623 transitions. Word has length 88 [2019-10-14 23:37:20,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:20,165 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 623 transitions. [2019-10-14 23:37:20,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 623 transitions. [2019-10-14 23:37:20,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:37:20,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:20,167 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] [2019-10-14 23:37:20,168 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:20,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1228480875, now seen corresponding path program 1 times [2019-10-14 23:37:20,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:20,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933687932] [2019-10-14 23:37:20,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:20,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:20,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,453 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:20,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933687932] [2019-10-14 23:37:20,622 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:20,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:20,623 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384778590] [2019-10-14 23:37:20,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:20,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:20,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:20,633 INFO L87 Difference]: Start difference. First operand 527 states and 623 transitions. Second operand 12 states. [2019-10-14 23:37:21,533 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:21,813 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:22,086 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:22,772 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:23,044 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:23,334 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:23,601 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:24,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:24,729 INFO L93 Difference]: Finished difference Result 1091 states and 1345 transitions. [2019-10-14 23:37:24,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:24,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-14 23:37:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:24,734 INFO L225 Difference]: With dead ends: 1091 [2019-10-14 23:37:24,734 INFO L226 Difference]: Without dead ends: 588 [2019-10-14 23:37:24,737 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:37:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-14 23:37:24,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 534. [2019-10-14 23:37:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2019-10-14 23:37:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 630 transitions. [2019-10-14 23:37:24,851 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 630 transitions. Word has length 88 [2019-10-14 23:37:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:24,851 INFO L462 AbstractCegarLoop]: Abstraction has 534 states and 630 transitions. [2019-10-14 23:37:24,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 630 transitions. [2019-10-14 23:37:24,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-14 23:37:24,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:24,858 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] [2019-10-14 23:37:24,858 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:24,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:24,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1576561429, now seen corresponding path program 1 times [2019-10-14 23:37:24,858 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:24,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317402227] [2019-10-14 23:37:24,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:24,859 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:24,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,151 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:25,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317402227] [2019-10-14 23:37:25,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099484287] [2019-10-14 23:37:25,344 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 [2019-10-14 23:37:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-14 23:37:25,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:25,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:37:25,701 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-14 23:37:25,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627769254] [2019-10-14 23:37:25,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:25,702 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:25,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:25,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:25,703 INFO L87 Difference]: Start difference. First operand 534 states and 630 transitions. Second operand 8 states. [2019-10-14 23:37:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:26,322 INFO L93 Difference]: Finished difference Result 1541 states and 1858 transitions. [2019-10-14 23:37:26,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:26,322 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2019-10-14 23:37:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:26,329 INFO L225 Difference]: With dead ends: 1541 [2019-10-14 23:37:26,329 INFO L226 Difference]: Without dead ends: 1031 [2019-10-14 23:37:26,331 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 [2019-10-14 23:37:26,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2019-10-14 23:37:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1028. [2019-10-14 23:37:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2019-10-14 23:37:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1216 transitions. [2019-10-14 23:37:26,506 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1216 transitions. Word has length 100 [2019-10-14 23:37:26,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:26,508 INFO L462 AbstractCegarLoop]: Abstraction has 1028 states and 1216 transitions. [2019-10-14 23:37:26,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1216 transitions. [2019-10-14 23:37:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:37:26,512 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:26,512 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] [2019-10-14 23:37:26,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:26,716 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:26,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1589016711, now seen corresponding path program 1 times [2019-10-14 23:37:26,717 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:26,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726846982] [2019-10-14 23:37:26,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:26,718 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:26,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,073 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:27,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726846982] [2019-10-14 23:37:27,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:27,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:37:27,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509427958] [2019-10-14 23:37:27,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:37:27,236 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:27,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:37:27,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:27,237 INFO L87 Difference]: Start difference. First operand 1028 states and 1216 transitions. Second operand 14 states. [2019-10-14 23:37:28,375 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:28,678 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:28,937 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:29,552 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:30,431 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:30,921 WARN L191 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:31,651 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:31,952 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:32,256 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190