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_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:40:16,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:40:16,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:40:16,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:40:16,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:40:16,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:40:16,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:40:16,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:40:16,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:40:16,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:40:16,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:40:16,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:40:16,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:40:16,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:40:16,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:40:16,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:40:16,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:40:16,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:40:16,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:40:16,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:40:16,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:40:16,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:40:16,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:40:16,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:40:16,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:40:16,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:40:16,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:40:16,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:40:16,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:40:16,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:40:16,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:40:16,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:40:16,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:40:16,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:40:16,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:40:16,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:40:16,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:40:16,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:40:16,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:40:16,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:40:16,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:40:16,263 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 19:40:16,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:40:16,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:40:16,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:40:16,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:40:16,282 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:40:16,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:40:16,282 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:40:16,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:40:16,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:40:16,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:40:16,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:40:16,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:40:16,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:40:16,284 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:40:16,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:40:16,284 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:40:16,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:40:16,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:40:16,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:40:16,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:40:16,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:40:16,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:40:16,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:40:16,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:40:16,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:40:16,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:40:16,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:40:16,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:40:16,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:40:16,599 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:40:16,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:40:16,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:40:16,625 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:40:16,625 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:40:16,626 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-10-13 19:40:16,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aed2c144/6805e841547540a2aac297be70165f6c/FLAG5b608faf2 [2019-10-13 19:40:17,204 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:40:17,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-10-13 19:40:17,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aed2c144/6805e841547540a2aac297be70165f6c/FLAG5b608faf2 [2019-10-13 19:40:17,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aed2c144/6805e841547540a2aac297be70165f6c [2019-10-13 19:40:17,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:40:17,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:40:17,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:40:17,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:40:17,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:40:17,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:17" (1/1) ... [2019-10-13 19:40:17,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef0d72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:17, skipping insertion in model container [2019-10-13 19:40:17,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:40:17" (1/1) ... [2019-10-13 19:40:17,581 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:40:17,643 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:40:18,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:40:18,189 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:40:18,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:40:18,331 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:40:18,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18 WrapperNode [2019-10-13 19:40:18,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:40:18,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:40:18,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:40:18,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:40:18,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (1/1) ... [2019-10-13 19:40:18,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (1/1) ... [2019-10-13 19:40:18,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (1/1) ... [2019-10-13 19:40:18,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (1/1) ... [2019-10-13 19:40:18,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (1/1) ... [2019-10-13 19:40:18,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (1/1) ... [2019-10-13 19:40:18,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (1/1) ... [2019-10-13 19:40:18,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:40:18,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:40:18,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:40:18,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:40:18,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (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 19:40:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:40:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:40:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 19:40:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 19:40:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 19:40:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 19:40:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 19:40:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:40:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:40:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 19:40:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:40:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 19:40:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 19:40:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 19:40:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 19:40:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 19:40:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 19:40:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 19:40:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 19:40:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:40:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 19:40:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 19:40:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 19:40:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 19:40:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 19:40:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 19:40:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 19:40:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 19:40:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:40:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 19:40:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 19:40:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 19:40:18,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 19:40:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 19:40:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 19:40:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 19:40:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 19:40:18,561 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 19:40:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 19:40:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 19:40:18,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 19:40:18,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 19:40:18,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 19:40:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:40:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:40:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:40:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 19:40:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 19:40:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 19:40:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 19:40:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 19:40:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 19:40:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 19:40:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 19:40:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 19:40:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 19:40:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 19:40:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 19:40:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 19:40:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 19:40:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 19:40:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 19:40:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-13 19:40:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 19:40:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 19:40:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 19:40:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 19:40:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 19:40:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 19:40:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 19:40:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 19:40:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:40:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 19:40:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 19:40:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 19:40:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 19:40:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 19:40:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 19:40:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 19:40:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 19:40:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:40:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 19:40:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:40:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:40:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 19:40:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:40:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:40:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:40:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:40:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 19:40:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:40:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 19:40:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 19:40:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:40:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 19:40:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 19:40:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 19:40:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:40:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:40:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:40:19,797 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:40:19,797 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 19:40:19,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:19 BoogieIcfgContainer [2019-10-13 19:40:19,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:40:19,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:40:19,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:40:19,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:40:19,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:40:17" (1/3) ... [2019-10-13 19:40:19,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b559ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:19, skipping insertion in model container [2019-10-13 19:40:19,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:40:18" (2/3) ... [2019-10-13 19:40:19,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b559ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:40:19, skipping insertion in model container [2019-10-13 19:40:19,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:40:19" (3/3) ... [2019-10-13 19:40:19,808 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2019-10-13 19:40:19,818 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:40:19,826 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:40:19,838 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:40:19,866 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:40:19,866 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:40:19,867 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:40:19,867 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:40:19,867 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:40:19,867 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:40:19,867 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:40:19,867 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:40:19,891 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2019-10-13 19:40:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 19:40:19,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:19,902 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 19:40:19,904 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2019-10-13 19:40:19,918 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:19,919 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768464097] [2019-10-13 19:40:19,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:19,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:19,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,565 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:20,675 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 19:40:20,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768464097] [2019-10-13 19:40:20,677 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:20,677 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:40:20,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128736939] [2019-10-13 19:40:20,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:40:20,685 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:20,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:40:20,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:40:20,702 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2019-10-13 19:40:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:22,170 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2019-10-13 19:40:22,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:40:22,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-13 19:40:22,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:22,188 INFO L225 Difference]: With dead ends: 360 [2019-10-13 19:40:22,188 INFO L226 Difference]: Without dead ends: 194 [2019-10-13 19:40:22,193 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 19:40:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-10-13 19:40:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2019-10-13 19:40:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-13 19:40:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2019-10-13 19:40:22,291 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2019-10-13 19:40:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:22,291 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2019-10-13 19:40:22,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:40:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2019-10-13 19:40:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:40:22,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:22,298 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 19:40:22,299 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:22,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:22,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2019-10-13 19:40:22,300 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:22,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799553746] [2019-10-13 19:40:22,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:22,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:22,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,705 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:22,761 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 19:40:22,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799553746] [2019-10-13 19:40:22,763 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:22,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:40:22,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933104125] [2019-10-13 19:40:22,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:40:22,766 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:22,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:40:22,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:40:22,771 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2019-10-13 19:40:23,191 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:24,288 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2019-10-13 19:40:24,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:24,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-13 19:40:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:24,294 INFO L225 Difference]: With dead ends: 289 [2019-10-13 19:40:24,295 INFO L226 Difference]: Without dead ends: 178 [2019-10-13 19:40:24,297 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 19:40:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-10-13 19:40:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2019-10-13 19:40:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-13 19:40:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2019-10-13 19:40:24,336 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2019-10-13 19:40:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:24,336 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2019-10-13 19:40:24,337 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:40:24,337 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2019-10-13 19:40:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 19:40:24,339 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:24,339 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:24,339 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:24,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:24,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2019-10-13 19:40:24,340 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:24,340 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447400866] [2019-10-13 19:40:24,340 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:24,340 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:24,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,711 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:24,834 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 19:40:24,834 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447400866] [2019-10-13 19:40:24,835 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:24,835 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 19:40:24,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408708608] [2019-10-13 19:40:24,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:24,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:24,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:24,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-13 19:40:24,837 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2019-10-13 19:40:25,238 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:25,607 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:25,937 WARN L191 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:26,211 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:27,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:27,934 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2019-10-13 19:40:27,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 19:40:27,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-13 19:40:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:27,939 INFO L225 Difference]: With dead ends: 302 [2019-10-13 19:40:27,939 INFO L226 Difference]: Without dead ends: 178 [2019-10-13 19:40:27,940 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-10-13 19:40:27,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2019-10-13 19:40:27,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-13 19:40:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2019-10-13 19:40:27,999 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2019-10-13 19:40:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:28,003 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2019-10-13 19:40:28,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:28,004 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2019-10-13 19:40:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-13 19:40:28,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:28,021 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:28,021 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:28,022 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2019-10-13 19:40:28,022 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:28,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865270724] [2019-10-13 19:40:28,025 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:28,025 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:28,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,364 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:28,455 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 19:40:28,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865270724] [2019-10-13 19:40:28,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:28,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:40:28,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209879145] [2019-10-13 19:40:28,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:28,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:28,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:28,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:40:28,458 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2019-10-13 19:40:28,871 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:30,371 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:31,244 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2019-10-13 19:40:31,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 19:40:31,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-13 19:40:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:31,249 INFO L225 Difference]: With dead ends: 413 [2019-10-13 19:40:31,249 INFO L226 Difference]: Without dead ends: 289 [2019-10-13 19:40:31,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2019-10-13 19:40:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2019-10-13 19:40:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-10-13 19:40:31,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2019-10-13 19:40:31,302 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2019-10-13 19:40:31,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:31,302 INFO L462 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2019-10-13 19:40:31,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2019-10-13 19:40:31,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 19:40:31,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:31,304 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:40:31,304 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:31,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:31,305 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2019-10-13 19:40:31,305 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:31,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410759136] [2019-10-13 19:40:31,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:31,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:31,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,664 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:31,815 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 19:40:31,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410759136] [2019-10-13 19:40:31,815 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:40:31,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:40:31,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039503785] [2019-10-13 19:40:31,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:40:31,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:31,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:40:31,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:40:31,818 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2019-10-13 19:40:32,548 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:32,903 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:33,191 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:33,449 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:34,070 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-13 19:40:35,224 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:35,574 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:35,895 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:36,210 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:36,568 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:36,861 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:38,400 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-13 19:40:38,803 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:39,906 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2019-10-13 19:40:39,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:40:39,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-10-13 19:40:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:39,915 INFO L225 Difference]: With dead ends: 866 [2019-10-13 19:40:39,916 INFO L226 Difference]: Without dead ends: 644 [2019-10-13 19:40:39,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-13 19:40:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-13 19:40:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2019-10-13 19:40:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-10-13 19:40:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2019-10-13 19:40:40,025 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2019-10-13 19:40:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:40,025 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2019-10-13 19:40:40,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 19:40:40,026 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2019-10-13 19:40:40,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 19:40:40,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:40,030 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:40,030 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:40,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:40,031 INFO L82 PathProgramCache]: Analyzing trace with hash -295396841, now seen corresponding path program 1 times [2019-10-13 19:40:40,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:40,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145682570] [2019-10-13 19:40:40,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:40,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:40,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,301 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 19:40:40,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145682570] [2019-10-13 19:40:40,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274688324] [2019-10-13 19:40:40,521 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 19:40:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:40,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-13 19:40:40,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:40,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:40,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-13 19:40:40,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137895974] [2019-10-13 19:40:40,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 19:40:40,950 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:40,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 19:40:40,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:40:40,951 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 8 states. [2019-10-13 19:40:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:42,333 INFO L93 Difference]: Finished difference Result 1470 states and 1866 transitions. [2019-10-13 19:40:42,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:40:42,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2019-10-13 19:40:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:42,342 INFO L225 Difference]: With dead ends: 1470 [2019-10-13 19:40:42,343 INFO L226 Difference]: Without dead ends: 1044 [2019-10-13 19:40:42,345 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:40:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-10-13 19:40:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 960. [2019-10-13 19:40:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2019-10-13 19:40:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1155 transitions. [2019-10-13 19:40:42,565 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1155 transitions. Word has length 156 [2019-10-13 19:40:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:42,565 INFO L462 AbstractCegarLoop]: Abstraction has 960 states and 1155 transitions. [2019-10-13 19:40:42,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 19:40:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1155 transitions. [2019-10-13 19:40:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:40:42,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:42,569 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:42,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:42,783 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:42,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:42,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2008036261, now seen corresponding path program 1 times [2019-10-13 19:40:42,784 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:42,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437590928] [2019-10-13 19:40:42,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:42,784 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:42,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,127 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:40:43,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437590928] [2019-10-13 19:40:43,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633032385] [2019-10-13 19:40:43,388 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 19:40:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:43,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:43,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:40:43,677 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:43,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-13 19:40:43,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038930247] [2019-10-13 19:40:43,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:40:43,680 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:43,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:40:43,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:40:43,681 INFO L87 Difference]: Start difference. First operand 960 states and 1155 transitions. Second operand 6 states. [2019-10-13 19:40:43,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:43,961 INFO L93 Difference]: Finished difference Result 1924 states and 2406 transitions. [2019-10-13 19:40:43,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:40:43,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-10-13 19:40:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:43,968 INFO L225 Difference]: With dead ends: 1924 [2019-10-13 19:40:43,969 INFO L226 Difference]: Without dead ends: 988 [2019-10-13 19:40:43,976 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:40:43,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2019-10-13 19:40:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 980. [2019-10-13 19:40:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2019-10-13 19:40:44,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1179 transitions. [2019-10-13 19:40:44,182 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1179 transitions. Word has length 148 [2019-10-13 19:40:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:44,183 INFO L462 AbstractCegarLoop]: Abstraction has 980 states and 1179 transitions. [2019-10-13 19:40:44,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:40:44,183 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1179 transitions. [2019-10-13 19:40:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 19:40:44,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:44,188 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:44,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:44,395 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:44,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:44,395 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2019-10-13 19:40:44,396 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:44,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642359695] [2019-10-13 19:40:44,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:44,396 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:44,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,866 WARN L191 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 19:40:45,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642359695] [2019-10-13 19:40:45,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699264445] [2019-10-13 19:40:45,066 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:45,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:40:45,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 19:40:45,323 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:40:45,323 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-10-13 19:40:45,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938933338] [2019-10-13 19:40:45,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:40:45,324 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:45,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:40:45,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:45,325 INFO L87 Difference]: Start difference. First operand 980 states and 1179 transitions. Second operand 5 states. [2019-10-13 19:40:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:40:45,510 INFO L93 Difference]: Finished difference Result 1746 states and 2150 transitions. [2019-10-13 19:40:45,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:40:45,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-13 19:40:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:40:45,516 INFO L225 Difference]: With dead ends: 1746 [2019-10-13 19:40:45,516 INFO L226 Difference]: Without dead ends: 790 [2019-10-13 19:40:45,520 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:40:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2019-10-13 19:40:45,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2019-10-13 19:40:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2019-10-13 19:40:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 941 transitions. [2019-10-13 19:40:45,693 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 941 transitions. Word has length 148 [2019-10-13 19:40:45,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:40:45,694 INFO L462 AbstractCegarLoop]: Abstraction has 790 states and 941 transitions. [2019-10-13 19:40:45,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:40:45,694 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 941 transitions. [2019-10-13 19:40:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:40:45,696 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:40:45,696 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 19:40:45,901 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:45,901 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:40:45,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:40:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2019-10-13 19:40:45,902 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:40:45,902 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073767525] [2019-10-13 19:40:45,902 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:45,902 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:40:45,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:40:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,265 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-13 19:40:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 19:40:46,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073767525] [2019-10-13 19:40:46,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428753481] [2019-10-13 19:40:46,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:40:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:40:46,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 19:40:46,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:40:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:40:46,969 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:40:46,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-10-13 19:40:46,969 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715927447] [2019-10-13 19:40:46,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 19:40:46,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:40:46,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 19:40:46,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:40:46,971 INFO L87 Difference]: Start difference. First operand 790 states and 941 transitions. Second operand 22 states. [2019-10-13 19:40:47,733 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:48,723 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-13 19:40:49,105 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:49,768 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-13 19:40:51,836 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:52,272 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:52,579 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:52,950 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:53,264 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 19:40:53,603 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:53,973 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-13 19:40:54,283 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191