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_spec1_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:34:52,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:34:52,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:34:52,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:34:52,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:34:52,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:34:52,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:34:52,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:34:52,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:34:52,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:34:52,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:34:52,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:34:52,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:34:52,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:34:52,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:34:52,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:34:52,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:34:52,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:34:52,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:34:52,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:34:52,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:34:52,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:34:52,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:34:52,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:34:52,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:34:52,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:34:52,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:34:52,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:34:52,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:34:52,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:34:52,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:34:52,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:34:52,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:34:52,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:34:52,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:34:52,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:34:52,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:34:52,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:34:52,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:34:52,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:34:52,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:34:52,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:34:52,273 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:34:52,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:34:52,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:34:52,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:34:52,278 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:34:52,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:34:52,278 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:34:52,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:34:52,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:34:52,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:34:52,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:34:52,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:34:52,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:34:52,279 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:34:52,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:34:52,280 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:34:52,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:34:52,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:34:52,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:34:52,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:34:52,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:34:52,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:34:52,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:34:52,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:34:52,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:34:52,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:34:52,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:34:52,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:34:52,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:34:52,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:34:52,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:34:52,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:34:52,595 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:34:52,595 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:34:52,596 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-10-13 19:34:52,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909982935/40bf97c42cde492d9f914f4e38daf488/FLAGc8e80ebfc [2019-10-13 19:34:53,194 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:34:53,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product59.cil.c [2019-10-13 19:34:53,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909982935/40bf97c42cde492d9f914f4e38daf488/FLAGc8e80ebfc [2019-10-13 19:34:53,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909982935/40bf97c42cde492d9f914f4e38daf488 [2019-10-13 19:34:53,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:34:53,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:34:53,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:53,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:34:53,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:34:53,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:53" (1/1) ... [2019-10-13 19:34:53,554 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 13.10 07:34:53, skipping insertion in model container [2019-10-13 19:34:53,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:34:53" (1/1) ... [2019-10-13 19:34:53,561 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:34:53,611 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:34:54,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:54,091 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:34:54,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:34:54,267 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:34:54,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54 WrapperNode [2019-10-13 19:34:54,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:34:54,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:34:54,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:34:54,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:34:54,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (1/1) ... [2019-10-13 19:34:54,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (1/1) ... [2019-10-13 19:34:54,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (1/1) ... [2019-10-13 19:34:54,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (1/1) ... [2019-10-13 19:34:54,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (1/1) ... [2019-10-13 19:34:54,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (1/1) ... [2019-10-13 19:34:54,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (1/1) ... [2019-10-13 19:34:54,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:34:54,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:34:54,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:34:54,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:34:54,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:34:54,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:34:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:34:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:34:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:34:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:34:54,449 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:34:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:34:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:34:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:34:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:34:54,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:34:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:34:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:34:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:34:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:34:54,451 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:34:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:34:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:34:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:34:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:34:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:34:54,452 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:34:54,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:34:54,453 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:34:54,453 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 19:34:54,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:54,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:54,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:54,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:34:54,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:34:54,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:34:54,454 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:34:54,454 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:34:54,454 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:34:54,454 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:34:54,455 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:34:54,455 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:34:54,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:34:54,455 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:34:54,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:34:54,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:34:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:34:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:34:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:34:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:34:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:34:54,456 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:34:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:34:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:34:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:34:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:34:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:34:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:34:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:34:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-13 19:34:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 19:34:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:34:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:34:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:34:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:34:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:34:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:34:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:34:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:34:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:34:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:34:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:34:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:34:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:34:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:34:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:34:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:34:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:34:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:34:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:34:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:34:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:34:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:34:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:34:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:34:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:34:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:34:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:34:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:34:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:34:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:34:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:34:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:34:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:34:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:34:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:34:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:34:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:34:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:34:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:34:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:34:55,547 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:34:55,550 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:34:55,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:55 BoogieIcfgContainer [2019-10-13 19:34:55,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:34:55,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:34:55,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:34:55,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:34:55,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:34:53" (1/3) ... [2019-10-13 19:34:55,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f76106f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:55, skipping insertion in model container [2019-10-13 19:34:55,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:34:54" (2/3) ... [2019-10-13 19:34:55,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f76106f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:34:55, skipping insertion in model container [2019-10-13 19:34:55,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:34:55" (3/3) ... [2019-10-13 19:34:55,561 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product59.cil.c [2019-10-13 19:34:55,571 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:34:55,580 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:34:55,591 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:34:55,627 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:34:55,628 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:34:55,628 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:34:55,628 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:34:55,628 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:34:55,629 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:34:55,629 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:34:55,629 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:34:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2019-10-13 19:34:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:34:55,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:55,672 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] [2019-10-13 19:34:55,674 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1514827661, now seen corresponding path program 1 times [2019-10-13 19:34:55,690 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:55,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975494610] [2019-10-13 19:34:55,691 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:55,691 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:55,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:56,372 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:56,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975494610] [2019-10-13 19:34:56,472 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:56,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:34:56,473 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644615636] [2019-10-13 19:34:56,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:34:56,480 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:56,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:34:56,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:56,497 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 3 states. [2019-10-13 19:34:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:57,672 INFO L93 Difference]: Finished difference Result 337 states and 437 transitions. [2019-10-13 19:34:57,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:34:57,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:34:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:57,703 INFO L225 Difference]: With dead ends: 337 [2019-10-13 19:34:57,703 INFO L226 Difference]: Without dead ends: 182 [2019-10-13 19:34:57,710 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:34:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-10-13 19:34:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2019-10-13 19:34:57,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-10-13 19:34:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2019-10-13 19:34:57,809 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 46 [2019-10-13 19:34:57,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:57,810 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2019-10-13 19:34:57,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:34:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2019-10-13 19:34:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:34:57,813 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:57,813 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] [2019-10-13 19:34:57,814 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:57,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:57,814 INFO L82 PathProgramCache]: Analyzing trace with hash -932487912, now seen corresponding path program 1 times [2019-10-13 19:34:57,814 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:57,815 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850533992] [2019-10-13 19:34:57,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:57,815 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:57,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:58,181 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:58,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850533992] [2019-10-13 19:34:58,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:58,210 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:34:58,210 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672039687] [2019-10-13 19:34:58,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:34:58,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:58,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:34:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:34:58,212 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 4 states. [2019-10-13 19:34:58,666 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:34:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:34:59,567 INFO L93 Difference]: Finished difference Result 264 states and 320 transitions. [2019-10-13 19:34:59,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:34:59,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:34:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:34:59,571 INFO L225 Difference]: With dead ends: 264 [2019-10-13 19:34:59,572 INFO L226 Difference]: Without dead ends: 166 [2019-10-13 19:34:59,574 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:34:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-10-13 19:34:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 137. [2019-10-13 19:34:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2019-10-13 19:34:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2019-10-13 19:34:59,630 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 47 [2019-10-13 19:34:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:34:59,631 INFO L462 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2019-10-13 19:34:59,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:34:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2019-10-13 19:34:59,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 19:34:59,633 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:34:59,633 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:34:59,633 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:34:59,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:34:59,634 INFO L82 PathProgramCache]: Analyzing trace with hash -896226788, now seen corresponding path program 1 times [2019-10-13 19:34:59,634 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:34:59,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810019235] [2019-10-13 19:34:59,634 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:59,635 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:34:59,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:34:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,927 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:34:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:34:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:34:59,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810019235] [2019-10-13 19:34:59,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:34:59,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:34:59,990 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304259293] [2019-10-13 19:34:59,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:34:59,991 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:34:59,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:34:59,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:34:59,991 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 8 states. [2019-10-13 19:35:00,508 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:00,881 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:01,139 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:01,383 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:02,225 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:04,237 INFO L93 Difference]: Finished difference Result 467 states and 576 transitions. [2019-10-13 19:35:04,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:04,237 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-13 19:35:04,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:04,242 INFO L225 Difference]: With dead ends: 467 [2019-10-13 19:35:04,242 INFO L226 Difference]: Without dead ends: 354 [2019-10-13 19:35:04,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:35:04,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-10-13 19:35:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 292. [2019-10-13 19:35:04,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2019-10-13 19:35:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2019-10-13 19:35:04,336 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 51 [2019-10-13 19:35:04,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:04,337 INFO L462 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2019-10-13 19:35:04,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2019-10-13 19:35:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:35:04,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:04,340 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:04,340 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:04,340 INFO L82 PathProgramCache]: Analyzing trace with hash 278011294, now seen corresponding path program 1 times [2019-10-13 19:35:04,341 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:04,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702881718] [2019-10-13 19:35:04,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:04,341 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:04,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,642 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:04,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702881718] [2019-10-13 19:35:04,737 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:04,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:35:04,738 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998524396] [2019-10-13 19:35:04,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:04,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:04,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:04,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:35:04,739 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand 8 states. [2019-10-13 19:35:05,162 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:06,292 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:06,649 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:06,951 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:07,275 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:07,734 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:08,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:08,869 INFO L93 Difference]: Finished difference Result 942 states and 1209 transitions. [2019-10-13 19:35:08,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:08,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-13 19:35:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:08,876 INFO L225 Difference]: With dead ends: 942 [2019-10-13 19:35:08,877 INFO L226 Difference]: Without dead ends: 674 [2019-10-13 19:35:08,879 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-13 19:35:08,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 539. [2019-10-13 19:35:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2019-10-13 19:35:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 654 transitions. [2019-10-13 19:35:08,998 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 654 transitions. Word has length 57 [2019-10-13 19:35:08,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:08,999 INFO L462 AbstractCegarLoop]: Abstraction has 539 states and 654 transitions. [2019-10-13 19:35:08,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 654 transitions. [2019-10-13 19:35:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 19:35:09,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:09,003 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] [2019-10-13 19:35:09,004 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:09,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1238143586, now seen corresponding path program 1 times [2019-10-13 19:35:09,004 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:09,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99504322] [2019-10-13 19:35:09,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:09,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:09,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,287 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:09,385 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99504322] [2019-10-13 19:35:09,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:09,386 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:09,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374955745] [2019-10-13 19:35:09,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:09,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:09,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:09,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:09,388 INFO L87 Difference]: Start difference. First operand 539 states and 654 transitions. Second operand 9 states. [2019-10-13 19:35:10,014 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:11,002 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:11,314 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:11,585 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:35:12,297 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:12,608 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:13,569 INFO L93 Difference]: Finished difference Result 1475 states and 1960 transitions. [2019-10-13 19:35:13,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 19:35:13,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-13 19:35:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:13,578 INFO L225 Difference]: With dead ends: 1475 [2019-10-13 19:35:13,578 INFO L226 Difference]: Without dead ends: 960 [2019-10-13 19:35:13,580 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:35:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2019-10-13 19:35:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 779. [2019-10-13 19:35:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-10-13 19:35:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 955 transitions. [2019-10-13 19:35:13,745 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 955 transitions. Word has length 61 [2019-10-13 19:35:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:13,746 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 955 transitions. [2019-10-13 19:35:13,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:13,746 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 955 transitions. [2019-10-13 19:35:13,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:35:13,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:13,749 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] [2019-10-13 19:35:13,750 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:13,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:13,750 INFO L82 PathProgramCache]: Analyzing trace with hash 726814707, now seen corresponding path program 1 times [2019-10-13 19:35:13,750 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:13,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257320540] [2019-10-13 19:35:13,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:13,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:13,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,012 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:14,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257320540] [2019-10-13 19:35:14,145 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:14,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:35:14,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078335399] [2019-10-13 19:35:14,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:14,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:14,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:14,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:35:14,147 INFO L87 Difference]: Start difference. First operand 779 states and 955 transitions. Second operand 9 states. [2019-10-13 19:35:15,297 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:15,545 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:35:15,863 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:16,139 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:17,443 INFO L93 Difference]: Finished difference Result 1799 states and 2424 transitions. [2019-10-13 19:35:17,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:35:17,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-13 19:35:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:17,455 INFO L225 Difference]: With dead ends: 1799 [2019-10-13 19:35:17,455 INFO L226 Difference]: Without dead ends: 1044 [2019-10-13 19:35:17,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-13 19:35:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-10-13 19:35:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 805. [2019-10-13 19:35:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 805 states. [2019-10-13 19:35:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 983 transitions. [2019-10-13 19:35:17,646 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 983 transitions. Word has length 98 [2019-10-13 19:35:17,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:17,647 INFO L462 AbstractCegarLoop]: Abstraction has 805 states and 983 transitions. [2019-10-13 19:35:17,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:35:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 983 transitions. [2019-10-13 19:35:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:35:17,653 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:17,653 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] [2019-10-13 19:35:17,654 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:17,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1620301045, now seen corresponding path program 1 times [2019-10-13 19:35:17,654 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:17,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843856436] [2019-10-13 19:35:17,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:17,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:17,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,940 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:18,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843856436] [2019-10-13 19:35:18,071 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:18,071 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:35:18,071 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311096994] [2019-10-13 19:35:18,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:35:18,072 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:18,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:35:18,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:35:18,073 INFO L87 Difference]: Start difference. First operand 805 states and 983 transitions. Second operand 11 states. [2019-10-13 19:35:18,859 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:19,116 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:19,360 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:20,134 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:20,425 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:20,680 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:35:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:22,070 INFO L93 Difference]: Finished difference Result 1845 states and 2472 transitions. [2019-10-13 19:35:22,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 19:35:22,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2019-10-13 19:35:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:22,077 INFO L225 Difference]: With dead ends: 1845 [2019-10-13 19:35:22,078 INFO L226 Difference]: Without dead ends: 1064 [2019-10-13 19:35:22,081 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-13 19:35:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1064 states. [2019-10-13 19:35:22,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1064 to 821. [2019-10-13 19:35:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-10-13 19:35:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 999 transitions. [2019-10-13 19:35:22,234 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 999 transitions. Word has length 98 [2019-10-13 19:35:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:22,234 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 999 transitions. [2019-10-13 19:35:22,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:35:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 999 transitions. [2019-10-13 19:35:22,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-13 19:35:22,237 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:22,237 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] [2019-10-13 19:35:22,237 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:22,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:22,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1612541686, now seen corresponding path program 1 times [2019-10-13 19:35:22,241 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:22,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796704205] [2019-10-13 19:35:22,242 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:22,242 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:22,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,518 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:22,642 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796704205] [2019-10-13 19:35:22,642 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:35:22,642 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:35:22,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586360840] [2019-10-13 19:35:22,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:35:22,644 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:22,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:35:22,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:35:22,644 INFO L87 Difference]: Start difference. First operand 821 states and 999 transitions. Second operand 7 states. [2019-10-13 19:35:23,166 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:23,654 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:35:26,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:26,119 INFO L93 Difference]: Finished difference Result 2734 states and 3697 transitions. [2019-10-13 19:35:26,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 19:35:26,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2019-10-13 19:35:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:26,132 INFO L225 Difference]: With dead ends: 2734 [2019-10-13 19:35:26,132 INFO L226 Difference]: Without dead ends: 1937 [2019-10-13 19:35:26,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:35:26,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1937 states. [2019-10-13 19:35:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1937 to 1635. [2019-10-13 19:35:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1635 states. [2019-10-13 19:35:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2013 transitions. [2019-10-13 19:35:26,432 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2013 transitions. Word has length 98 [2019-10-13 19:35:26,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:26,434 INFO L462 AbstractCegarLoop]: Abstraction has 1635 states and 2013 transitions. [2019-10-13 19:35:26,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:35:26,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2013 transitions. [2019-10-13 19:35:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-13 19:35:26,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:26,438 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] [2019-10-13 19:35:26,439 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1468895920, now seen corresponding path program 1 times [2019-10-13 19:35:26,439 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:26,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175604370] [2019-10-13 19:35:26,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:26,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:26,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,777 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:35:27,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175604370] [2019-10-13 19:35:27,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893026598] [2019-10-13 19:35:27,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:27,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 19:35:27,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:35:27,442 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:27,442 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-13 19:35:27,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720491717] [2019-10-13 19:35:27,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:35:27,443 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:27,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:35:27,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:27,444 INFO L87 Difference]: Start difference. First operand 1635 states and 2013 transitions. Second operand 8 states. [2019-10-13 19:35:28,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:35:28,231 INFO L93 Difference]: Finished difference Result 3178 states and 3934 transitions. [2019-10-13 19:35:28,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:35:28,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2019-10-13 19:35:28,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:35:28,244 INFO L225 Difference]: With dead ends: 3178 [2019-10-13 19:35:28,245 INFO L226 Difference]: Without dead ends: 1567 [2019-10-13 19:35:28,252 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:35:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2019-10-13 19:35:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1567. [2019-10-13 19:35:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2019-10-13 19:35:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 1891 transitions. [2019-10-13 19:35:28,604 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 1891 transitions. Word has length 102 [2019-10-13 19:35:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:35:28,606 INFO L462 AbstractCegarLoop]: Abstraction has 1567 states and 1891 transitions. [2019-10-13 19:35:28,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:35:28,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 1891 transitions. [2019-10-13 19:35:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 19:35:28,611 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:35:28,612 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:35:28,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:28,816 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:35:28,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:35:28,817 INFO L82 PathProgramCache]: Analyzing trace with hash 844933528, now seen corresponding path program 1 times [2019-10-13 19:35:28,818 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:35:28,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954514917] [2019-10-13 19:35:28,818 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:28,818 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:35:28,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:35:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,220 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:35:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-13 19:35:29,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954514917] [2019-10-13 19:35:29,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017360799] [2019-10-13 19:35:29,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:35:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:35:29,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:35:29,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:35:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:35:29,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:35:29,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 19 [2019-10-13 19:35:29,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919365166] [2019-10-13 19:35:29,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:35:29,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:35:29,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:35:29,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-13 19:35:29,955 INFO L87 Difference]: Start difference. First operand 1567 states and 1891 transitions. Second operand 9 states.