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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:37:00,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:37:00,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:37:00,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:37:00,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:37:00,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:37:00,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:37:00,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:37:00,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:37:00,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:37:00,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:37:00,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:37:00,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:37:00,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:37:00,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:37:00,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:37:00,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:37:00,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:37:00,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:37:00,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:37:00,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:37:00,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:37:00,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:37:00,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:37:00,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:37:00,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:37:00,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:37:00,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:37:00,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:37:00,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:37:00,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:37:00,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:37:00,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:37:00,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:37:00,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:37:00,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:37:00,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:37:00,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:37:00,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:37:00,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:37:00,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:37:00,338 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 23:37:00,351 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:37:00,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:37:00,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:37:00,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:37:00,353 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:37:00,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:37:00,354 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:37:00,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:37:00,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:37:00,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:37:00,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:37:00,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:37:00,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:37:00,355 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:37:00,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:37:00,355 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:37:00,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:37:00,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:37:00,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:37:00,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:37:00,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:37:00,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:37:00,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:37:00,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:37:00,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:37:00,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:37:00,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:37:00,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:37:00,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:37:00,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:37:00,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:37:00,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:37:00,665 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:37:00,665 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:37:00,667 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2019-10-14 23:37:00,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646f19ca4/915c966919024e4ea5928ef0245df6e2/FLAG9075b9030 [2019-10-14 23:37:01,295 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:37:01,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product57.cil.c [2019-10-14 23:37:01,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646f19ca4/915c966919024e4ea5928ef0245df6e2/FLAG9075b9030 [2019-10-14 23:37:01,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/646f19ca4/915c966919024e4ea5928ef0245df6e2 [2019-10-14 23:37:01,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:37:01,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:37:01,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:37:01,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:37:01,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:37:01,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:37:01" (1/1) ... [2019-10-14 23:37:01,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a48b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:01, skipping insertion in model container [2019-10-14 23:37:01,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:37:01" (1/1) ... [2019-10-14 23:37:01,648 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:37:01,699 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:37:02,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:37:02,092 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:37:02,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:37:02,269 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:37:02,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02 WrapperNode [2019-10-14 23:37:02,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:37:02,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:37:02,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:37:02,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:37:02,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (1/1) ... [2019-10-14 23:37:02,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (1/1) ... [2019-10-14 23:37:02,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (1/1) ... [2019-10-14 23:37:02,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (1/1) ... [2019-10-14 23:37:02,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (1/1) ... [2019-10-14 23:37:02,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (1/1) ... [2019-10-14 23:37:02,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (1/1) ... [2019-10-14 23:37:02,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:37:02,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:37:02,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:37:02,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:37:02,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (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 23:37:02,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:37:02,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:37:02,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:37:02,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:37:02,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:37:02,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:37:02,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:37:02,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:37:02,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:37:02,454 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:37:02,454 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:37:02,454 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:37:02,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:37:02,455 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:37:02,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:37:02,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:37:02,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:37:02,455 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:37:02,455 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:37:02,456 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:37:02,456 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:37:02,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:37:02,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:37:02,456 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:37:02,456 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:37:02,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:37:02,457 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:37:02,457 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:37:02,457 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:37:02,457 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:37:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:37:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:37:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:37:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:37:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:37:02,458 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:37:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:37:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:37:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:37:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:37:02,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:37:02,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:37:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:37:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:37:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:37:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:37:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:37:02,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:37:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:37:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:37:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:37:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:37:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:37:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:37:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:37:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:37:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:37:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:37:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:37:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:37:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:37:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:37:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:37:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:37:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:37:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:37:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:37:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:37:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:37:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:37:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:37:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:37:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:37:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:37:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:37:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:37:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:37:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:37:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:37:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:37:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:37:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:37:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:37:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:37:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:37:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:37:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:37:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:37:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:37:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:37:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:37:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:37:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:37:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:37:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:37:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:37:03,540 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:37:03,541 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:37:03,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:37:03 BoogieIcfgContainer [2019-10-14 23:37:03,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:37:03,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:37:03,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:37:03,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:37:03,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:37:01" (1/3) ... [2019-10-14 23:37:03,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18df76de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:37:03, skipping insertion in model container [2019-10-14 23:37:03,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:02" (2/3) ... [2019-10-14 23:37:03,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18df76de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:37:03, skipping insertion in model container [2019-10-14 23:37:03,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:37:03" (3/3) ... [2019-10-14 23:37:03,554 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product57.cil.c [2019-10-14 23:37:03,564 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:37:03,576 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:37:03,589 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:37:03,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:37:03,621 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:37:03,621 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:37:03,621 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:37:03,622 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:37:03,622 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:37:03,622 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:37:03,622 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:37:03,645 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-14 23:37:03,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:37:03,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:03,657 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 23:37:03,659 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:03,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:03,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1038310593, now seen corresponding path program 1 times [2019-10-14 23:37:03,674 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:03,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152014154] [2019-10-14 23:37:03,675 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:03,675 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:03,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,368 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:04,498 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 23:37:04,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152014154] [2019-10-14 23:37:04,508 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:04,509 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:37:04,510 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384109814] [2019-10-14 23:37:04,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:37:04,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:04,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:37:04,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:37:04,535 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2019-10-14 23:37:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:05,749 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2019-10-14 23:37:05,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:37:05,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:37:05,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:05,767 INFO L225 Difference]: With dead ends: 335 [2019-10-14 23:37:05,767 INFO L226 Difference]: Without dead ends: 180 [2019-10-14 23:37:05,772 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 23:37:05,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2019-10-14 23:37:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2019-10-14 23:37:05,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-10-14 23:37:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2019-10-14 23:37:05,914 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 52 [2019-10-14 23:37:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:05,915 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2019-10-14 23:37:05,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:37:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2019-10-14 23:37:05,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:37:05,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:05,919 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 23:37:05,919 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:05,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:05,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2043760100, now seen corresponding path program 1 times [2019-10-14 23:37:05,920 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:05,920 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396333047] [2019-10-14 23:37:05,921 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:05,921 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:05,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,286 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:06,321 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 23:37:06,321 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396333047] [2019-10-14 23:37:06,322 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:06,322 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:37:06,322 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171326528] [2019-10-14 23:37:06,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:37:06,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:06,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:37:06,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:37:06,325 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 4 states. [2019-10-14 23:37:06,782 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:07,668 INFO L93 Difference]: Finished difference Result 268 states and 323 transitions. [2019-10-14 23:37:07,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:37:07,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:37:07,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:07,671 INFO L225 Difference]: With dead ends: 268 [2019-10-14 23:37:07,672 INFO L226 Difference]: Without dead ends: 164 [2019-10-14 23:37:07,673 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 23:37:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-14 23:37:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-10-14 23:37:07,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-14 23:37:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2019-10-14 23:37:07,722 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 53 [2019-10-14 23:37:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:07,723 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2019-10-14 23:37:07,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:37:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2019-10-14 23:37:07,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:37:07,732 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:07,732 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 23:37:07,732 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:07,733 INFO L82 PathProgramCache]: Analyzing trace with hash -69539003, now seen corresponding path program 1 times [2019-10-14 23:37:07,733 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:07,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540407806] [2019-10-14 23:37:07,734 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:07,734 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:07,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,161 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:08,323 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 23:37:08,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540407806] [2019-10-14 23:37:08,324 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:08,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:08,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329365357] [2019-10-14 23:37:08,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:08,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:08,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:08,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:08,327 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 8 states. [2019-10-14 23:37:08,898 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:09,321 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:09,591 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:09,855 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:11,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:11,217 INFO L93 Difference]: Finished difference Result 277 states and 337 transitions. [2019-10-14 23:37:11,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:11,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:37:11,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:11,219 INFO L225 Difference]: With dead ends: 277 [2019-10-14 23:37:11,220 INFO L226 Difference]: Without dead ends: 164 [2019-10-14 23:37:11,221 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2019-10-14 23:37:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2019-10-14 23:37:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-14 23:37:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2019-10-14 23:37:11,257 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 57 [2019-10-14 23:37:11,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:11,258 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2019-10-14 23:37:11,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2019-10-14 23:37:11,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:37:11,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:11,259 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 23:37:11,260 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:11,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:11,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1758854223, now seen corresponding path program 1 times [2019-10-14 23:37:11,260 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:11,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206645437] [2019-10-14 23:37:11,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:11,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:11,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,541 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:11,656 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 23:37:11,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206645437] [2019-10-14 23:37:11,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:11,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:37:11,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646700749] [2019-10-14 23:37:11,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:37:11,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:11,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:37:11,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:37:11,659 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand 6 states. [2019-10-14 23:37:12,012 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:13,188 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:14,036 INFO L93 Difference]: Finished difference Result 381 states and 467 transitions. [2019-10-14 23:37:14,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:37:14,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-14 23:37:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:14,039 INFO L225 Difference]: With dead ends: 381 [2019-10-14 23:37:14,040 INFO L226 Difference]: Without dead ends: 268 [2019-10-14 23:37:14,041 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 [2019-10-14 23:37:14,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-10-14 23:37:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 227. [2019-10-14 23:37:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-10-14 23:37:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 259 transitions. [2019-10-14 23:37:14,102 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 259 transitions. Word has length 70 [2019-10-14 23:37:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:14,103 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 259 transitions. [2019-10-14 23:37:14,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 259 transitions. [2019-10-14 23:37:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:37:14,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:14,104 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 23:37:14,105 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:14,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:14,105 INFO L82 PathProgramCache]: Analyzing trace with hash 19039556, now seen corresponding path program 1 times [2019-10-14 23:37:14,105 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:14,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560388047] [2019-10-14 23:37:14,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:14,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:14,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,460 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,553 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 23:37:14,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560388047] [2019-10-14 23:37:14,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:14,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:14,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393191718] [2019-10-14 23:37:14,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:14,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:14,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:14,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:14,556 INFO L87 Difference]: Start difference. First operand 227 states and 259 transitions. Second operand 8 states. [2019-10-14 23:37:14,977 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:16,550 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:16,854 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:17,161 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:17,412 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:18,252 INFO L93 Difference]: Finished difference Result 603 states and 748 transitions. [2019-10-14 23:37:18,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:18,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2019-10-14 23:37:18,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:18,256 INFO L225 Difference]: With dead ends: 603 [2019-10-14 23:37:18,256 INFO L226 Difference]: Without dead ends: 400 [2019-10-14 23:37:18,257 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2019-10-14 23:37:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 360. [2019-10-14 23:37:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2019-10-14 23:37:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 419 transitions. [2019-10-14 23:37:18,329 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 419 transitions. Word has length 84 [2019-10-14 23:37:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:18,329 INFO L462 AbstractCegarLoop]: Abstraction has 360 states and 419 transitions. [2019-10-14 23:37:18,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:18,329 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 419 transitions. [2019-10-14 23:37:18,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:37:18,331 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:18,331 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 23:37:18,331 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:18,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:18,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1361015554, now seen corresponding path program 1 times [2019-10-14 23:37:18,332 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:18,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159048176] [2019-10-14 23:37:18,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:18,333 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:18,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,635 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,743 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 23:37:18,743 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159048176] [2019-10-14 23:37:18,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:18,744 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:18,744 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283136547] [2019-10-14 23:37:18,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:18,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:18,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:18,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:18,746 INFO L87 Difference]: Start difference. First operand 360 states and 419 transitions. Second operand 10 states. [2019-10-14 23:37:19,205 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:20,805 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:21,128 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:21,449 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:21,699 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:22,048 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:23,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:23,431 INFO L93 Difference]: Finished difference Result 819 states and 1032 transitions. [2019-10-14 23:37:23,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:23,431 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:37:23,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:23,437 INFO L225 Difference]: With dead ends: 819 [2019-10-14 23:37:23,437 INFO L226 Difference]: Without dead ends: 605 [2019-10-14 23:37:23,439 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 23:37:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-14 23:37:23,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 537. [2019-10-14 23:37:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-14 23:37:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 634 transitions. [2019-10-14 23:37:23,550 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 634 transitions. Word has length 88 [2019-10-14 23:37:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:23,550 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 634 transitions. [2019-10-14 23:37:23,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 634 transitions. [2019-10-14 23:37:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:37:23,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:23,553 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 23:37:23,553 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:23,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2011268159, now seen corresponding path program 1 times [2019-10-14 23:37:23,554 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:23,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252703583] [2019-10-14 23:37:23,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:23,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:23,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,824 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:23,951 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 23:37:23,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252703583] [2019-10-14 23:37:23,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:23,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:23,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220007880] [2019-10-14 23:37:23,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:23,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:23,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:23,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:23,953 INFO L87 Difference]: Start difference. First operand 537 states and 634 transitions. Second operand 8 states. [2019-10-14 23:37:24,845 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:25,131 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:25,395 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:26,562 INFO L93 Difference]: Finished difference Result 988 states and 1209 transitions. [2019-10-14 23:37:26,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:26,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-14 23:37:26,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:26,568 INFO L225 Difference]: With dead ends: 988 [2019-10-14 23:37:26,568 INFO L226 Difference]: Without dead ends: 593 [2019-10-14 23:37:26,570 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 23:37:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-14 23:37:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 537. [2019-10-14 23:37:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-14 23:37:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 633 transitions. [2019-10-14 23:37:26,665 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 633 transitions. Word has length 88 [2019-10-14 23:37:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:26,665 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 633 transitions. [2019-10-14 23:37:26,665 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:26,665 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 633 transitions. [2019-10-14 23:37:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:37:26,667 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:26,667 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 23:37:26,667 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1167262657, now seen corresponding path program 1 times [2019-10-14 23:37:26,668 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:26,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657915605] [2019-10-14 23:37:26,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:26,668 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:26,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,969 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:27,138 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 23:37:27,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657915605] [2019-10-14 23:37:27,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:27,139 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:27,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671760985] [2019-10-14 23:37:27,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:27,145 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:27,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:27,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:27,146 INFO L87 Difference]: Start difference. First operand 537 states and 633 transitions. Second operand 12 states. [2019-10-14 23:37:28,220 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:28,489 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:28,744 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:29,483 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:29,769 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:30,070 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:30,334 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:31,809 INFO L93 Difference]: Finished difference Result 1117 states and 1376 transitions. [2019-10-14 23:37:31,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:31,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-14 23:37:31,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:31,816 INFO L225 Difference]: With dead ends: 1117 [2019-10-14 23:37:31,817 INFO L226 Difference]: Without dead ends: 604 [2019-10-14 23:37:31,819 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 23:37:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2019-10-14 23:37:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 544. [2019-10-14 23:37:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-10-14 23:37:31,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 640 transitions. [2019-10-14 23:37:31,957 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 640 transitions. Word has length 88 [2019-10-14 23:37:31,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:31,957 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 640 transitions. [2019-10-14 23:37:31,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:31,958 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 640 transitions. [2019-10-14 23:37:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-14 23:37:31,966 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:31,966 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 23:37:31,967 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:31,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:31,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1269276973, now seen corresponding path program 1 times [2019-10-14 23:37:31,967 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:31,967 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74235229] [2019-10-14 23:37:31,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:31,968 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:31,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,291 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,638 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 23:37:32,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74235229] [2019-10-14 23:37:32,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879876150] [2019-10-14 23:37:32,639 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 23:37:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:32,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-14 23:37:32,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:32,998 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 23:37:32,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:37:32,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-14 23:37:32,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739616380] [2019-10-14 23:37:33,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:33,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:33,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:33,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:33,001 INFO L87 Difference]: Start difference. First operand 544 states and 640 transitions. Second operand 8 states. [2019-10-14 23:37:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:33,580 INFO L93 Difference]: Finished difference Result 1571 states and 1888 transitions. [2019-10-14 23:37:33,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:33,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2019-10-14 23:37:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:33,590 INFO L225 Difference]: With dead ends: 1571 [2019-10-14 23:37:33,590 INFO L226 Difference]: Without dead ends: 1051 [2019-10-14 23:37:33,593 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2019-10-14 23:37:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1048. [2019-10-14 23:37:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2019-10-14 23:37:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1236 transitions. [2019-10-14 23:37:33,842 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1236 transitions. Word has length 100 [2019-10-14 23:37:33,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:33,843 INFO L462 AbstractCegarLoop]: Abstraction has 1048 states and 1236 transitions. [2019-10-14 23:37:33,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1236 transitions. [2019-10-14 23:37:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-14 23:37:33,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:33,846 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 23:37:34,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:34,052 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:34,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:34,052 INFO L82 PathProgramCache]: Analyzing trace with hash -2017960913, now seen corresponding path program 1 times [2019-10-14 23:37:34,053 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:34,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064136026] [2019-10-14 23:37:34,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:34,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:34,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,470 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:34,632 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 23:37:34,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064136026] [2019-10-14 23:37:34,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:34,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:37:34,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886016847] [2019-10-14 23:37:34,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:37:34,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:34,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:37:34,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:34,635 INFO L87 Difference]: Start difference. First operand 1048 states and 1236 transitions. Second operand 14 states. [2019-10-14 23:37:35,787 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:36,081 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:36,357 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:37,034 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:38,078 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:38,552 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188