java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:37:10,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:37:10,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:37:10,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:37:10,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:37:10,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:37:10,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:37:10,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:37:10,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:37:10,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:37:10,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:37:10,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:37:10,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:37:10,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:37:10,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:37:10,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:37:10,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:37:10,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:37:10,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:37:10,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:37:10,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:37:10,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:37:10,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:37:10,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:37:10,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:37:10,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:37:10,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:37:10,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:37:10,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:37:10,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:37:10,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:37:10,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:37:10,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:37:10,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:37:10,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:37:10,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:37:10,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:37:10,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:37:10,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:37:10,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:37:10,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:37:10,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:37:10,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:37:10,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:37:10,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:37:10,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:37:10,325 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:37:10,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:37:10,326 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:37:10,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:37:10,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:37:10,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:37:10,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:37:10,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:37:10,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:37:10,327 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:37:10,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:37:10,329 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:37:10,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:37:10,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:37:10,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:37:10,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:37:10,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:37:10,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:37:10,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:37:10,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:37:10,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:37:10,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:37:10,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:37:10,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:37:10,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:37:10,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:37:10,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:37:10,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:37:10,646 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:37:10,646 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:37:10,647 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product62.cil.c [2019-10-14 23:37:10,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1c19c42f/451e3a43b1644a71b4aeff911a4338b3/FLAG854136ec4 [2019-10-14 23:37:11,251 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:37:11,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product62.cil.c [2019-10-14 23:37:11,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1c19c42f/451e3a43b1644a71b4aeff911a4338b3/FLAG854136ec4 [2019-10-14 23:37:11,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1c19c42f/451e3a43b1644a71b4aeff911a4338b3 [2019-10-14 23:37:11,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:37:11,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:37:11,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:37:11,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:37:11,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:37:11,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:37:11" (1/1) ... [2019-10-14 23:37:11,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d974c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:11, skipping insertion in model container [2019-10-14 23:37:11,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:37:11" (1/1) ... [2019-10-14 23:37:11,578 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:37:11,634 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:37:12,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:37:12,065 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:37:12,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:37:12,233 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:37:12,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12 WrapperNode [2019-10-14 23:37:12,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:37:12,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:37:12,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:37:12,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:37:12,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (1/1) ... [2019-10-14 23:37:12,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (1/1) ... [2019-10-14 23:37:12,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (1/1) ... [2019-10-14 23:37:12,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (1/1) ... [2019-10-14 23:37:12,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (1/1) ... [2019-10-14 23:37:12,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (1/1) ... [2019-10-14 23:37:12,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (1/1) ... [2019-10-14 23:37:12,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:37:12,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:37:12,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:37:12,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:37:12,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:37:12,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:37:12,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:37:12,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:37:12,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:37:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:37:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:37:12,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:37:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:37:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:37:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:37:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:37:12,389 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:37:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:37:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:37:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:37:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:37:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:37:12,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:37:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:37:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:37:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:37:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:37:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:37:12,391 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:37:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:37:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:37:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:37:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:37:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:37:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:37:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:37:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:37:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:37:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:37:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:37:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:37:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:37:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:37:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:37:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:37:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:37:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:37:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:37:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:37:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:37:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:37:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:37:12,395 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:37:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:37:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:37:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-14 23:37:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:37:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:37:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:37:12,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:37:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:37:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:37:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:37:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:37:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:37:12,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:37:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:37:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:37:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:37:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:37:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:37:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:37:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:37:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:37:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:37:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:37:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:37:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:37:12,399 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:37:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:37:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:37:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:37:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:37:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:37:12,400 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:37:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:37:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:37:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:37:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:37:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:37:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:37:12,401 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:37:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:37:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:37:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:37:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:37:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:37:12,402 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:37:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:37:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:37:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:37:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:37:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:37:12,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:37:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:37:13,529 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:37:13,530 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:37:13,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:37:13 BoogieIcfgContainer [2019-10-14 23:37:13,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:37:13,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:37:13,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:37:13,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:37:13,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:37:11" (1/3) ... [2019-10-14 23:37:13,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889a2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:37:13, skipping insertion in model container [2019-10-14 23:37:13,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:37:12" (2/3) ... [2019-10-14 23:37:13,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889a2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:37:13, skipping insertion in model container [2019-10-14 23:37:13,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:37:13" (3/3) ... [2019-10-14 23:37:13,539 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product62.cil.c [2019-10-14 23:37:13,549 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:37:13,558 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:37:13,569 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:37:13,596 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:37:13,596 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:37:13,596 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:37:13,597 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:37:13,597 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:37:13,597 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:37:13,597 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:37:13,597 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:37:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2019-10-14 23:37:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:37:13,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:13,633 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, 1] [2019-10-14 23:37:13,635 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:13,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1940108659, now seen corresponding path program 1 times [2019-10-14 23:37:13,650 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:13,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356083605] [2019-10-14 23:37:13,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:13,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:13,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,345 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:14,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356083605] [2019-10-14 23:37:14,451 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:14,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:37:14,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848083900] [2019-10-14 23:37:14,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:37:14,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:14,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:37:14,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:37:14,475 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 3 states. [2019-10-14 23:37:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:15,967 INFO L93 Difference]: Finished difference Result 366 states and 475 transitions. [2019-10-14 23:37:15,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:37:15,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-14 23:37:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:15,988 INFO L225 Difference]: With dead ends: 366 [2019-10-14 23:37:15,988 INFO L226 Difference]: Without dead ends: 197 [2019-10-14 23:37:15,993 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:37:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-10-14 23:37:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 160. [2019-10-14 23:37:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2019-10-14 23:37:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions. [2019-10-14 23:37:16,148 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 52 [2019-10-14 23:37:16,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:16,149 INFO L462 AbstractCegarLoop]: Abstraction has 160 states and 190 transitions. [2019-10-14 23:37:16,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:37:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions. [2019-10-14 23:37:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:37:16,160 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:16,160 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:16,161 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:16,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1389083153, now seen corresponding path program 1 times [2019-10-14 23:37:16,162 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:16,163 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667468755] [2019-10-14 23:37:16,163 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:16,163 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:16,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,547 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:16,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667468755] [2019-10-14 23:37:16,610 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:16,610 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:37:16,610 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564754859] [2019-10-14 23:37:16,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:37:16,621 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:16,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:37:16,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:37:16,622 INFO L87 Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 4 states. [2019-10-14 23:37:17,068 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:18,203 INFO L93 Difference]: Finished difference Result 295 states and 362 transitions. [2019-10-14 23:37:18,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:37:18,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:37:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:18,211 INFO L225 Difference]: With dead ends: 295 [2019-10-14 23:37:18,211 INFO L226 Difference]: Without dead ends: 181 [2019-10-14 23:37:18,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:37:18,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-14 23:37:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 151. [2019-10-14 23:37:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-10-14 23:37:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2019-10-14 23:37:18,257 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 53 [2019-10-14 23:37:18,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:18,258 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2019-10-14 23:37:18,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:37:18,258 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2019-10-14 23:37:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:37:18,260 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:18,260 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] [2019-10-14 23:37:18,261 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:18,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1857519430, now seen corresponding path program 1 times [2019-10-14 23:37:18,261 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:18,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313137005] [2019-10-14 23:37:18,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:18,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:18,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,594 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:18,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313137005] [2019-10-14 23:37:18,700 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:18,700 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:18,700 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640462017] [2019-10-14 23:37:18,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:18,701 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:18,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:18,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:18,702 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand 8 states. [2019-10-14 23:37:19,153 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:19,516 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:19,780 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:20,036 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:21,663 INFO L93 Difference]: Finished difference Result 308 states and 380 transitions. [2019-10-14 23:37:21,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:21,664 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-14 23:37:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:21,667 INFO L225 Difference]: With dead ends: 308 [2019-10-14 23:37:21,668 INFO L226 Difference]: Without dead ends: 181 [2019-10-14 23:37:21,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-10-14 23:37:21,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 151. [2019-10-14 23:37:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-10-14 23:37:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 177 transitions. [2019-10-14 23:37:21,760 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 177 transitions. Word has length 58 [2019-10-14 23:37:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:21,761 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 177 transitions. [2019-10-14 23:37:21,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:21,762 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 177 transitions. [2019-10-14 23:37:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-14 23:37:21,771 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:21,771 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:21,771 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:21,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:21,772 INFO L82 PathProgramCache]: Analyzing trace with hash -891726999, now seen corresponding path program 1 times [2019-10-14 23:37:21,772 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:21,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871847163] [2019-10-14 23:37:21,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:21,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:21,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,114 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:22,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871847163] [2019-10-14 23:37:22,217 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:22,218 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:37:22,218 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443130719] [2019-10-14 23:37:22,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:37:22,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:22,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:37:22,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:37:22,220 INFO L87 Difference]: Start difference. First operand 151 states and 177 transitions. Second operand 6 states. [2019-10-14 23:37:22,595 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:23,976 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:24,983 INFO L93 Difference]: Finished difference Result 428 states and 528 transitions. [2019-10-14 23:37:24,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:37:24,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2019-10-14 23:37:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:24,987 INFO L225 Difference]: With dead ends: 428 [2019-10-14 23:37:24,987 INFO L226 Difference]: Without dead ends: 301 [2019-10-14 23:37:24,988 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:37:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-10-14 23:37:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 258. [2019-10-14 23:37:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2019-10-14 23:37:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 293 transitions. [2019-10-14 23:37:25,040 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 293 transitions. Word has length 76 [2019-10-14 23:37:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:25,040 INFO L462 AbstractCegarLoop]: Abstraction has 258 states and 293 transitions. [2019-10-14 23:37:25,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:37:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 293 transitions. [2019-10-14 23:37:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2019-10-14 23:37:25,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:25,042 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:25,042 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:25,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:25,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1078240077, now seen corresponding path program 1 times [2019-10-14 23:37:25,043 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:25,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388362683] [2019-10-14 23:37:25,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:25,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:25,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,340 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:25,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388362683] [2019-10-14 23:37:25,435 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:25,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:25,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734597747] [2019-10-14 23:37:25,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:25,436 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:25,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:25,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:25,437 INFO L87 Difference]: Start difference. First operand 258 states and 293 transitions. Second operand 8 states. [2019-10-14 23:37:25,905 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:27,591 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:27,928 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:28,188 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:28,444 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:29,407 INFO L93 Difference]: Finished difference Result 683 states and 839 transitions. [2019-10-14 23:37:29,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:37:29,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2019-10-14 23:37:29,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:29,412 INFO L225 Difference]: With dead ends: 683 [2019-10-14 23:37:29,412 INFO L226 Difference]: Without dead ends: 449 [2019-10-14 23:37:29,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:29,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2019-10-14 23:37:29,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 406. [2019-10-14 23:37:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2019-10-14 23:37:29,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 468 transitions. [2019-10-14 23:37:29,522 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 468 transitions. Word has length 90 [2019-10-14 23:37:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:29,523 INFO L462 AbstractCegarLoop]: Abstraction has 406 states and 468 transitions. [2019-10-14 23:37:29,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 468 transitions. [2019-10-14 23:37:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-14 23:37:29,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:29,526 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:29,526 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:29,526 INFO L82 PathProgramCache]: Analyzing trace with hash -2043608601, now seen corresponding path program 1 times [2019-10-14 23:37:29,527 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:29,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396596830] [2019-10-14 23:37:29,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:29,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:29,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,834 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:29,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396596830] [2019-10-14 23:37:29,975 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:29,976 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:37:29,976 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745525626] [2019-10-14 23:37:29,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:37:29,977 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:29,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:37:29,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:37:29,977 INFO L87 Difference]: Start difference. First operand 406 states and 468 transitions. Second operand 10 states. [2019-10-14 23:37:30,694 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:32,627 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:32,939 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:33,205 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:33,465 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:37:33,825 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:35,553 INFO L93 Difference]: Finished difference Result 931 states and 1161 transitions. [2019-10-14 23:37:35,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:37:35,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2019-10-14 23:37:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:35,560 INFO L225 Difference]: With dead ends: 931 [2019-10-14 23:37:35,561 INFO L226 Difference]: Without dead ends: 686 [2019-10-14 23:37:35,562 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:37:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2019-10-14 23:37:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 614. [2019-10-14 23:37:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-14 23:37:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 719 transitions. [2019-10-14 23:37:35,689 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 719 transitions. Word has length 94 [2019-10-14 23:37:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:35,690 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 719 transitions. [2019-10-14 23:37:35,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:37:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 719 transitions. [2019-10-14 23:37:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-14 23:37:35,692 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:35,692 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:35,692 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:35,693 INFO L82 PathProgramCache]: Analyzing trace with hash 315698408, now seen corresponding path program 1 times [2019-10-14 23:37:35,693 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:35,693 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908852436] [2019-10-14 23:37:35,693 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:35,693 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:35,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,015 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:36,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908852436] [2019-10-14 23:37:36,182 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:36,182 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:37:36,183 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333884708] [2019-10-14 23:37:36,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:36,183 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:36,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:36,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:37:36,184 INFO L87 Difference]: Start difference. First operand 614 states and 719 transitions. Second operand 8 states. [2019-10-14 23:37:37,252 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:37,514 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:37:37,806 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:39,238 INFO L93 Difference]: Finished difference Result 1131 states and 1374 transitions. [2019-10-14 23:37:39,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:37:39,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2019-10-14 23:37:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:39,244 INFO L225 Difference]: With dead ends: 1131 [2019-10-14 23:37:39,244 INFO L226 Difference]: Without dead ends: 674 [2019-10-14 23:37:39,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-10-14 23:37:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 614. [2019-10-14 23:37:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-14 23:37:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 718 transitions. [2019-10-14 23:37:39,371 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 718 transitions. Word has length 94 [2019-10-14 23:37:39,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:39,372 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 718 transitions. [2019-10-14 23:37:39,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 718 transitions. [2019-10-14 23:37:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-14 23:37:39,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:39,375 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:39,375 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:39,376 INFO L82 PathProgramCache]: Analyzing trace with hash 975229930, now seen corresponding path program 1 times [2019-10-14 23:37:39,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:39,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713564442] [2019-10-14 23:37:39,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:39,376 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:39,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,675 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:39,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713564442] [2019-10-14 23:37:39,895 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:39,895 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:37:39,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357537342] [2019-10-14 23:37:39,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:37:39,902 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:39,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:37:39,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:37:39,903 INFO L87 Difference]: Start difference. First operand 614 states and 718 transitions. Second operand 12 states. [2019-10-14 23:37:40,969 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:37:41,249 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:41,512 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:42,390 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:42,664 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:37:42,974 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:43,234 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:37:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:44,995 INFO L93 Difference]: Finished difference Result 1275 states and 1558 transitions. [2019-10-14 23:37:44,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:37:44,996 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2019-10-14 23:37:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:45,005 INFO L225 Difference]: With dead ends: 1275 [2019-10-14 23:37:45,007 INFO L226 Difference]: Without dead ends: 685 [2019-10-14 23:37:45,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:37:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2019-10-14 23:37:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 621. [2019-10-14 23:37:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2019-10-14 23:37:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 725 transitions. [2019-10-14 23:37:45,213 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 725 transitions. Word has length 94 [2019-10-14 23:37:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:45,214 INFO L462 AbstractCegarLoop]: Abstraction has 621 states and 725 transitions. [2019-10-14 23:37:45,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:37:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 725 transitions. [2019-10-14 23:37:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-14 23:37:45,218 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:45,219 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:45,219 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1765139220, now seen corresponding path program 1 times [2019-10-14 23:37:45,219 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:45,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064036551] [2019-10-14 23:37:45,220 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:45,220 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:45,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,610 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:45,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064036551] [2019-10-14 23:37:45,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792356886] [2019-10-14 23:37:45,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:46,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-14 23:37:46,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:37:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:37:46,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:37:46,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2019-10-14 23:37:46,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433385926] [2019-10-14 23:37:46,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:37:46,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:46,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:37:46,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:46,264 INFO L87 Difference]: Start difference. First operand 621 states and 725 transitions. Second operand 8 states. [2019-10-14 23:37:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:37:47,012 INFO L93 Difference]: Finished difference Result 1800 states and 2145 transitions. [2019-10-14 23:37:47,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:37:47,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 106 [2019-10-14 23:37:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:37:47,021 INFO L225 Difference]: With dead ends: 1800 [2019-10-14 23:37:47,022 INFO L226 Difference]: Without dead ends: 1203 [2019-10-14 23:37:47,024 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:37:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2019-10-14 23:37:47,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1200. [2019-10-14 23:37:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-10-14 23:37:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1404 transitions. [2019-10-14 23:37:47,367 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1404 transitions. Word has length 106 [2019-10-14 23:37:47,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:37:47,368 INFO L462 AbstractCegarLoop]: Abstraction has 1200 states and 1404 transitions. [2019-10-14 23:37:47,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:37:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1404 transitions. [2019-10-14 23:37:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-10-14 23:37:47,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:37:47,371 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:37:47,576 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:37:47,576 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:37:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:37:47,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1984669840, now seen corresponding path program 1 times [2019-10-14 23:37:47,577 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:37:47,577 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801245305] [2019-10-14 23:37:47,578 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:47,578 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:37:47,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:37:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:47,940 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:37:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:37:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:37:48,129 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801245305] [2019-10-14 23:37:48,129 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:37:48,129 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-14 23:37:48,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037424907] [2019-10-14 23:37:48,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:37:48,130 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:37:48,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:37:48,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:37:48,131 INFO L87 Difference]: Start difference. First operand 1200 states and 1404 transitions. Second operand 14 states.