/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:55:27,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:55:27,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:55:27,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:55:27,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:55:27,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:55:27,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:55:27,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:55:27,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:55:27,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:55:27,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:55:27,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:55:27,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:55:27,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:55:27,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:55:27,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:55:27,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:55:27,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:55:27,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:55:27,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:55:27,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:55:27,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:55:27,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:55:27,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:55:27,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:55:27,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:55:27,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:55:27,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:55:27,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:55:27,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:55:27,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:55:27,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:55:27,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:55:27,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:55:27,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:55:27,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:55:27,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:55:27,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:55:27,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:55:27,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:55:27,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:55:27,236 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 [2019-11-06 21:55:27,258 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:55:27,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:55:27,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:55:27,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:55:27,264 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:55:27,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:55:27,265 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:55:27,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:55:27,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:55:27,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:55:27,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:55:27,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:55:27,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:55:27,267 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:55:27,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:55:27,268 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:55:27,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:55:27,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:55:27,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:55:27,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:55:27,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:55:27,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:55:27,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:55:27,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:55:27,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:55:27,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:55:27,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:55:27,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:55:27,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:55:27,557 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:55:27,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:55:27,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:55:27,581 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:55:27,582 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:55:27,583 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2019-11-06 21:55:27,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24969121e/c2b08a34e1554bd8a56db6a902742dec/FLAG03f0a452f [2019-11-06 21:55:28,167 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:55:28,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2019-11-06 21:55:28,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24969121e/c2b08a34e1554bd8a56db6a902742dec/FLAG03f0a452f [2019-11-06 21:55:28,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24969121e/c2b08a34e1554bd8a56db6a902742dec [2019-11-06 21:55:28,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:55:28,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:55:28,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:55:28,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:55:28,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:55:28,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:28" (1/1) ... [2019-11-06 21:55:28,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5e08e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:28, skipping insertion in model container [2019-11-06 21:55:28,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:28" (1/1) ... [2019-11-06 21:55:28,519 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:55:28,585 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:55:29,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:55:29,075 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:55:29,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:55:29,198 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:55:29,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29 WrapperNode [2019-11-06 21:55:29,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:55:29,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:55:29,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:55:29,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:55:29,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2019-11-06 21:55:29,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2019-11-06 21:55:29,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2019-11-06 21:55:29,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2019-11-06 21:55:29,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2019-11-06 21:55:29,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2019-11-06 21:55:29,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (1/1) ... [2019-11-06 21:55:29,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:55:29,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:55:29,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:55:29,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:55:29,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (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 [2019-11-06 21:55:29,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:55:29,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:55:29,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-06 21:55:29,367 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-06 21:55:29,367 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-06 21:55:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-06 21:55:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-06 21:55:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-11-06 21:55:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-11-06 21:55:29,368 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-11-06 21:55:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-11-06 21:55:29,369 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-11-06 21:55:29,370 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-11-06 21:55:29,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-11-06 21:55:29,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-11-06 21:55:29,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-06 21:55:29,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:55:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-06 21:55:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-06 21:55:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-06 21:55:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-06 21:55:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:55:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-06 21:55:29,374 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-11-06 21:55:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:55:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 21:55:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-11-06 21:55:29,375 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:55:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-11-06 21:55:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-11-06 21:55:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-11-06 21:55:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-11-06 21:55:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-11-06 21:55:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-11-06 21:55:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-11-06 21:55:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-06 21:55:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-06 21:55:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-06 21:55:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-06 21:55:29,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-06 21:55:29,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-06 21:55:29,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-06 21:55:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:55:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:55:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-06 21:55:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-06 21:55:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-06 21:55:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-06 21:55:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-06 21:55:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-11-06 21:55:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-11-06 21:55:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-11-06 21:55:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-11-06 21:55:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-11-06 21:55:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-11-06 21:55:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-11-06 21:55:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-11-06 21:55:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:55:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-06 21:55:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-11-06 21:55:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-11-06 21:55:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-06 21:55:29,381 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-06 21:55:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-11-06 21:55:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-06 21:55:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-06 21:55:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-06 21:55:29,382 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-06 21:55:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:55:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-11-06 21:55:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-11-06 21:55:29,383 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-11-06 21:55:29,384 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-11-06 21:55:29,384 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-11-06 21:55:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-11-06 21:55:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-11-06 21:55:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-11-06 21:55:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-11-06 21:55:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-11-06 21:55:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-06 21:55:29,385 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:55:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:55:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-06 21:55:29,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:55:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:55:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:55:29,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:55:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-06 21:55:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:55:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-06 21:55:29,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-06 21:55:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:55:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-06 21:55:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-06 21:55:29,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-06 21:55:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:55:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:55:29,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:55:30,523 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:55:30,523 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:55:30,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:30 BoogieIcfgContainer [2019-11-06 21:55:30,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:55:30,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:55:30,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:55:30,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:55:30,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:55:28" (1/3) ... [2019-11-06 21:55:30,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2c1982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:30, skipping insertion in model container [2019-11-06 21:55:30,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:29" (2/3) ... [2019-11-06 21:55:30,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2c1982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:30, skipping insertion in model container [2019-11-06 21:55:30,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:30" (3/3) ... [2019-11-06 21:55:30,534 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2019-11-06 21:55:30,544 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:55:30,556 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:55:30,567 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:55:30,603 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:55:30,603 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:55:30,603 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:55:30,603 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:55:30,604 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:55:30,604 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:55:30,604 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:55:30,604 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:55:30,627 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2019-11-06 21:55:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 21:55:30,637 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:30,638 INFO L410 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] [2019-11-06 21:55:30,640 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:30,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:30,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1301923028, now seen corresponding path program 1 times [2019-11-06 21:55:30,655 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:30,655 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869819751] [2019-11-06 21:55:30,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,350 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:31,418 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869819751] [2019-11-06 21:55:31,420 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:31,425 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 21:55:31,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58878277] [2019-11-06 21:55:31,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 21:55:31,434 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:31,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 21:55:31,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 21:55:31,451 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2019-11-06 21:55:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:32,742 INFO L93 Difference]: Finished difference Result 345 states and 451 transitions. [2019-11-06 21:55:32,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:55:32,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-06 21:55:32,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:32,776 INFO L225 Difference]: With dead ends: 345 [2019-11-06 21:55:32,776 INFO L226 Difference]: Without dead ends: 186 [2019-11-06 21:55:32,783 INFO L630 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 [2019-11-06 21:55:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2019-11-06 21:55:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2019-11-06 21:55:32,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-11-06 21:55:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2019-11-06 21:55:32,923 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 46 [2019-11-06 21:55:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:32,924 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2019-11-06 21:55:32,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 21:55:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2019-11-06 21:55:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-06 21:55:32,935 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:32,936 INFO L410 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] [2019-11-06 21:55:32,937 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:32,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:32,937 INFO L82 PathProgramCache]: Analyzing trace with hash -216566915, now seen corresponding path program 1 times [2019-11-06 21:55:32,937 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:32,938 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031952567] [2019-11-06 21:55:32,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:33,332 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:33,366 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031952567] [2019-11-06 21:55:33,366 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:33,366 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:55:33,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906325143] [2019-11-06 21:55:33,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:55:33,369 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:33,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:55:33,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:55:33,370 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2019-11-06 21:55:33,813 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:34,825 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2019-11-06 21:55:34,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 21:55:34,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-11-06 21:55:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:34,829 INFO L225 Difference]: With dead ends: 278 [2019-11-06 21:55:34,829 INFO L226 Difference]: Without dead ends: 170 [2019-11-06 21:55:34,831 INFO L630 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 [2019-11-06 21:55:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-06 21:55:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2019-11-06 21:55:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-06 21:55:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2019-11-06 21:55:34,906 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 47 [2019-11-06 21:55:34,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:34,906 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2019-11-06 21:55:34,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:55:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2019-11-06 21:55:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-06 21:55:34,908 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:34,908 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:55:34,908 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1163721234, now seen corresponding path program 1 times [2019-11-06 21:55:34,909 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:34,909 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096366401] [2019-11-06 21:55:34,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:35,248 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:35,379 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096366401] [2019-11-06 21:55:35,379 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:35,380 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:55:35,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531792627] [2019-11-06 21:55:35,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:55:35,381 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:35,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:55:35,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:55:35,381 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 8 states. [2019-11-06 21:55:35,827 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:36,183 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-11-06 21:55:36,443 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:36,692 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:38,222 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2019-11-06 21:55:38,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:55:38,223 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-11-06 21:55:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:38,226 INFO L225 Difference]: With dead ends: 287 [2019-11-06 21:55:38,226 INFO L226 Difference]: Without dead ends: 170 [2019-11-06 21:55:38,227 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-06 21:55:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2019-11-06 21:55:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2019-11-06 21:55:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-06 21:55:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2019-11-06 21:55:38,293 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 51 [2019-11-06 21:55:38,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:38,293 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2019-11-06 21:55:38,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:55:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2019-11-06 21:55:38,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-06 21:55:38,295 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:38,296 INFO L410 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] [2019-11-06 21:55:38,296 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:38,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1315506319, now seen corresponding path program 1 times [2019-11-06 21:55:38,297 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:38,297 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886506874] [2019-11-06 21:55:38,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,603 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:38,691 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886506874] [2019-11-06 21:55:38,692 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:38,692 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 21:55:38,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097920840] [2019-11-06 21:55:38,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 21:55:38,693 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:38,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 21:55:38,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:55:38,693 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 6 states. [2019-11-06 21:55:39,053 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:40,254 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:41,115 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2019-11-06 21:55:41,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:55:41,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2019-11-06 21:55:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:41,119 INFO L225 Difference]: With dead ends: 390 [2019-11-06 21:55:41,119 INFO L226 Difference]: Without dead ends: 273 [2019-11-06 21:55:41,120 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:55:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-11-06 21:55:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2019-11-06 21:55:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2019-11-06 21:55:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2019-11-06 21:55:41,171 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 69 [2019-11-06 21:55:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:41,171 INFO L462 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2019-11-06 21:55:41,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 21:55:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2019-11-06 21:55:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-11-06 21:55:41,173 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:41,173 INFO L410 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] [2019-11-06 21:55:41,173 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:41,174 INFO L82 PathProgramCache]: Analyzing trace with hash -921409892, now seen corresponding path program 1 times [2019-11-06 21:55:41,174 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:41,174 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947901915] [2019-11-06 21:55:41,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,475 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:41,569 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947901915] [2019-11-06 21:55:41,569 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:41,569 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:55:41,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388749852] [2019-11-06 21:55:41,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:55:41,572 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:41,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:55:41,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:55:41,573 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand 8 states. [2019-11-06 21:55:42,016 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:43,135 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:43,512 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:44,179 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:44,439 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:44,724 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:45,988 INFO L93 Difference]: Finished difference Result 691 states and 842 transitions. [2019-11-06 21:55:45,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 21:55:45,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2019-11-06 21:55:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:45,994 INFO L225 Difference]: With dead ends: 691 [2019-11-06 21:55:45,994 INFO L226 Difference]: Without dead ends: 483 [2019-11-06 21:55:45,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-11-06 21:55:45,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2019-11-06 21:55:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 419. [2019-11-06 21:55:46,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-11-06 21:55:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2019-11-06 21:55:46,070 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 83 [2019-11-06 21:55:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:46,070 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2019-11-06 21:55:46,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:55:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2019-11-06 21:55:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-11-06 21:55:46,072 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:46,072 INFO L410 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] [2019-11-06 21:55:46,072 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash 592685792, now seen corresponding path program 1 times [2019-11-06 21:55:46,073 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:46,073 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669995459] [2019-11-06 21:55:46,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,362 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:46,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:55:46,465 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669995459] [2019-11-06 21:55:46,465 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:46,466 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:55:46,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702306287] [2019-11-06 21:55:46,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:55:46,467 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:46,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:55:46,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:55:46,467 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand 9 states. [2019-11-06 21:55:46,891 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:48,160 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:55:48,467 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:49,610 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:49,898 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:50,250 WARN L191 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:50,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:50,677 INFO L93 Difference]: Finished difference Result 522 states and 646 transitions. [2019-11-06 21:55:50,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 21:55:50,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2019-11-06 21:55:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:50,682 INFO L225 Difference]: With dead ends: 522 [2019-11-06 21:55:50,682 INFO L226 Difference]: Without dead ends: 519 [2019-11-06 21:55:50,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-11-06 21:55:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2019-11-06 21:55:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 419. [2019-11-06 21:55:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-11-06 21:55:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2019-11-06 21:55:50,766 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 87 [2019-11-06 21:55:50,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:50,767 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2019-11-06 21:55:50,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:55:50,767 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2019-11-06 21:55:50,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-06 21:55:50,769 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:50,769 INFO L410 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] [2019-11-06 21:55:50,769 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:50,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:50,769 INFO L82 PathProgramCache]: Analyzing trace with hash -88143431, now seen corresponding path program 1 times [2019-11-06 21:55:50,770 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:50,770 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296202564] [2019-11-06 21:55:50,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,032 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:51,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:55:51,202 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296202564] [2019-11-06 21:55:51,203 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:51,203 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 21:55:51,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529009030] [2019-11-06 21:55:51,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 21:55:51,205 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:51,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 21:55:51,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-06 21:55:51,206 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand 9 states. [2019-11-06 21:55:52,431 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:52,731 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-06 21:55:52,998 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:53,266 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:54,580 INFO L93 Difference]: Finished difference Result 922 states and 1136 transitions. [2019-11-06 21:55:54,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:55:54,586 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2019-11-06 21:55:54,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:54,590 INFO L225 Difference]: With dead ends: 922 [2019-11-06 21:55:54,590 INFO L226 Difference]: Without dead ends: 527 [2019-11-06 21:55:54,592 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:55:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-11-06 21:55:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 429. [2019-11-06 21:55:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-11-06 21:55:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 487 transitions. [2019-11-06 21:55:54,669 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 487 transitions. Word has length 103 [2019-11-06 21:55:54,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:54,670 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 487 transitions. [2019-11-06 21:55:54,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 21:55:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 487 transitions. [2019-11-06 21:55:54,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-06 21:55:54,672 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:54,672 INFO L410 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] [2019-11-06 21:55:54,673 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:54,673 INFO L82 PathProgramCache]: Analyzing trace with hash -441231813, now seen corresponding path program 1 times [2019-11-06 21:55:54,673 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:54,673 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772724777] [2019-11-06 21:55:54,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:54,949 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:55:55,098 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772724777] [2019-11-06 21:55:55,104 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:55,104 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 21:55:55,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418373097] [2019-11-06 21:55:55,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 21:55:55,106 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:55,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 21:55:55,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:55:55,107 INFO L87 Difference]: Start difference. First operand 429 states and 487 transitions. Second operand 11 states. [2019-11-06 21:55:55,951 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-11-06 21:55:56,216 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:56,455 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:57,165 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:57,446 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:57,717 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-11-06 21:55:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:55:59,277 INFO L93 Difference]: Finished difference Result 942 states and 1158 transitions. [2019-11-06 21:55:59,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 21:55:59,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2019-11-06 21:55:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:55:59,282 INFO L225 Difference]: With dead ends: 942 [2019-11-06 21:55:59,282 INFO L226 Difference]: Without dead ends: 537 [2019-11-06 21:55:59,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-11-06 21:55:59,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-11-06 21:55:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 437. [2019-11-06 21:55:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2019-11-06 21:55:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 495 transitions. [2019-11-06 21:55:59,343 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 495 transitions. Word has length 103 [2019-11-06 21:55:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:55:59,343 INFO L462 AbstractCegarLoop]: Abstraction has 437 states and 495 transitions. [2019-11-06 21:55:59,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 21:55:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 495 transitions. [2019-11-06 21:55:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-06 21:55:59,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:55:59,346 INFO L410 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] [2019-11-06 21:55:59,346 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:55:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:55:59,346 INFO L82 PathProgramCache]: Analyzing trace with hash 691958780, now seen corresponding path program 1 times [2019-11-06 21:55:59,346 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:55:59,347 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815958418] [2019-11-06 21:55:59,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:55:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,616 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:55:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:55:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:55:59,759 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815958418] [2019-11-06 21:55:59,759 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:55:59,759 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:55:59,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871391517] [2019-11-06 21:55:59,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:55:59,760 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:55:59,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:55:59,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:55:59,761 INFO L87 Difference]: Start difference. First operand 437 states and 495 transitions. Second operand 7 states. [2019-11-06 21:56:00,162 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:56:00,729 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-11-06 21:56:03,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:56:03,256 INFO L93 Difference]: Finished difference Result 1265 states and 1606 transitions. [2019-11-06 21:56:03,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-06 21:56:03,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2019-11-06 21:56:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:56:03,263 INFO L225 Difference]: With dead ends: 1265 [2019-11-06 21:56:03,263 INFO L226 Difference]: Without dead ends: 852 [2019-11-06 21:56:03,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:56:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2019-11-06 21:56:03,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 753. [2019-11-06 21:56:03,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2019-11-06 21:56:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 889 transitions. [2019-11-06 21:56:03,383 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 889 transitions. Word has length 103 [2019-11-06 21:56:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:56:03,383 INFO L462 AbstractCegarLoop]: Abstraction has 753 states and 889 transitions. [2019-11-06 21:56:03,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:56:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 889 transitions. [2019-11-06 21:56:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-06 21:56:03,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:56:03,386 INFO L410 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] [2019-11-06 21:56:03,386 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:56:03,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:56:03,387 INFO L82 PathProgramCache]: Analyzing trace with hash -867723262, now seen corresponding path program 1 times [2019-11-06 21:56:03,387 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:56:03,387 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293587969] [2019-11-06 21:56:03,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:56:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,687 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:56:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:56:04,007 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293587969] [2019-11-06 21:56:04,007 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92830965] [2019-11-06 21:56:04,008 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 [2019-11-06 21:56:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:04,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:56:04,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:56:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:56:04,450 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 21:56:04,450 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-11-06 21:56:04,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998785028] [2019-11-06 21:56:04,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:56:04,452 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:56:04,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:56:04,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:56:04,452 INFO L87 Difference]: Start difference. First operand 753 states and 889 transitions. Second operand 8 states. [2019-11-06 21:56:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:56:04,987 INFO L93 Difference]: Finished difference Result 1446 states and 1719 transitions. [2019-11-06 21:56:04,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 21:56:04,988 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-11-06 21:56:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:56:04,994 INFO L225 Difference]: With dead ends: 1446 [2019-11-06 21:56:04,994 INFO L226 Difference]: Without dead ends: 717 [2019-11-06 21:56:04,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:56:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-11-06 21:56:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2019-11-06 21:56:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2019-11-06 21:56:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 832 transitions. [2019-11-06 21:56:05,151 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 832 transitions. Word has length 107 [2019-11-06 21:56:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:56:05,151 INFO L462 AbstractCegarLoop]: Abstraction has 717 states and 832 transitions. [2019-11-06 21:56:05,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:56:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 832 transitions. [2019-11-06 21:56:05,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-06 21:56:05,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:56:05,156 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:56:05,366 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:56:05,366 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:56:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:56:05,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1713415852, now seen corresponding path program 1 times [2019-11-06 21:56:05,367 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:56:05,367 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283717667] [2019-11-06 21:56:05,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:56:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,717 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-11-06 21:56:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-06 21:56:06,009 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283717667] [2019-11-06 21:56:06,010 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936893958] [2019-11-06 21:56:06,010 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 [2019-11-06 21:56:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:56:06,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-06 21:56:06,262 INFO L279 TraceCheckSpWp]: Computing forward predicates...