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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:09:55,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:09:55,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:09:55,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:09:55,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:09:55,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:09:55,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:09:55,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:09:55,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:09:55,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:09:55,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:09:55,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:09:55,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:09:55,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:09:55,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:09:55,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:09:55,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:09:55,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:09:55,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:09:55,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:09:55,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:09:55,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:09:55,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:09:55,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:09:55,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:09:55,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:09:55,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:09:55,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:09:55,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:09:55,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:09:55,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:09:55,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:09:55,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:09:55,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:09:55,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:09:55,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:09:55,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:09:55,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:09:55,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:09:55,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:09:55,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:09:55,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:09:55,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:09:55,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:09:55,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:09:55,342 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:09:55,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:09:55,345 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:09:55,345 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:09:55,346 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:09:55,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:09:55,346 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:09:55,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:09:55,349 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:09:55,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:09:55,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:09:55,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:09:55,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:09:55,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:09:55,350 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:09:55,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:09:55,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:09:55,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:09:55,351 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:09:55,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:09:55,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:09:55,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:09:55,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:09:55,353 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:09:55,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:09:55,353 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:09:55,354 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:09:55,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:09:55,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:09:55,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:09:55,424 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:09:55,424 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:09:55,425 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-09-16 17:09:55,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/742062e61/cd806da83e3644278cad873d5ea40cd2/FLAG8d4b2a9f7 [2019-09-16 17:09:56,090 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:09:56,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product59.cil.c [2019-09-16 17:09:56,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/742062e61/cd806da83e3644278cad873d5ea40cd2/FLAG8d4b2a9f7 [2019-09-16 17:09:56,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/742062e61/cd806da83e3644278cad873d5ea40cd2 [2019-09-16 17:09:56,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:09:56,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:09:56,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:56,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:09:56,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:09:56,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:56" (1/1) ... [2019-09-16 17:09:56,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df0e53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:56, skipping insertion in model container [2019-09-16 17:09:56,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:09:56" (1/1) ... [2019-09-16 17:09:56,363 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:09:56,420 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:09:57,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:57,019 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:09:57,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:09:57,194 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:09:57,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57 WrapperNode [2019-09-16 17:09:57,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:09:57,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:09:57,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:09:57,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:09:57,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (1/1) ... [2019-09-16 17:09:57,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (1/1) ... [2019-09-16 17:09:57,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (1/1) ... [2019-09-16 17:09:57,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (1/1) ... [2019-09-16 17:09:57,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (1/1) ... [2019-09-16 17:09:57,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (1/1) ... [2019-09-16 17:09:57,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (1/1) ... [2019-09-16 17:09:57,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:09:57,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:09:57,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:09:57,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:09:57,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (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 [2019-09-16 17:09:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:09:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:09:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:57,347 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-16 17:09:57,348 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-16 17:09:57,348 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-16 17:09:57,348 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-16 17:09:57,348 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-16 17:09:57,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-16 17:09:57,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-16 17:09:57,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-16 17:09:57,350 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:09:57,350 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-16 17:09:57,351 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-16 17:09:57,351 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:57,351 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-16 17:09:57,351 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:09:57,351 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-16 17:09:57,351 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-16 17:09:57,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-16 17:09:57,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-16 17:09:57,352 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-16 17:09:57,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-16 17:09:57,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-16 17:09:57,353 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-16 17:09:57,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:57,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:57,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:57,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:09:57,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:09:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:09:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:09:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-16 17:09:57,355 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-16 17:09:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:09:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-16 17:09:57,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:09:57,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:09:57,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:09:57,357 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:09:57,357 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:09:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:09:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:09:57,358 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:09:57,358 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-16 17:09:57,358 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-16 17:09:57,358 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-16 17:09:57,358 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-16 17:09:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-16 17:09:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-16 17:09:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-16 17:09:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-16 17:09:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:09:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-16 17:09:57,360 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-16 17:09:57,360 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-16 17:09:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:09:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-16 17:09:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-16 17:09:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-16 17:09:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-16 17:09:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-16 17:09:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-16 17:09:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-16 17:09:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-16 17:09:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-16 17:09:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-16 17:09:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-16 17:09:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-09-16 17:09:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-16 17:09:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:09:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:09:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:09:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:09:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:09:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:09:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:09:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:09:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:09:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:09:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:09:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:09:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:09:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:09:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:09:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:09:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:09:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-16 17:09:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-16 17:09:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:09:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-16 17:09:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:09:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:09:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:09:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:09:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:09:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:09:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:09:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:09:58,539 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:09:58,540 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:09:58,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:58 BoogieIcfgContainer [2019-09-16 17:09:58,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:09:58,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:09:58,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:09:58,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:09:58,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:09:56" (1/3) ... [2019-09-16 17:09:58,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b620925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:58, skipping insertion in model container [2019-09-16 17:09:58,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:09:57" (2/3) ... [2019-09-16 17:09:58,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b620925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:09:58, skipping insertion in model container [2019-09-16 17:09:58,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:09:58" (3/3) ... [2019-09-16 17:09:58,551 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product59.cil.c [2019-09-16 17:09:58,561 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:09:58,572 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:09:58,588 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:09:58,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:09:58,615 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:09:58,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:09:58,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:09:58,615 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:09:58,616 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:09:58,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:09:58,616 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:09:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2019-09-16 17:09:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-16 17:09:58,651 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:58,652 INFO L407 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] [2019-09-16 17:09:58,654 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:58,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1133755032, now seen corresponding path program 1 times [2019-09-16 17:09:58,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:58,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:58,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:58,715 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:59,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:59,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:09:59,047 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,061 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:09:59,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:09:59,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:59,080 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 2 states. [2019-09-16 17:09:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,115 INFO L93 Difference]: Finished difference Result 170 states and 198 transitions. [2019-09-16 17:09:59,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:09:59,116 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-16 17:09:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,131 INFO L225 Difference]: With dead ends: 170 [2019-09-16 17:09:59,132 INFO L226 Difference]: Without dead ends: 159 [2019-09-16 17:09:59,136 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:09:59,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-09-16 17:09:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2019-09-16 17:09:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-09-16 17:09:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 186 transitions. [2019-09-16 17:09:59,191 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 186 transitions. Word has length 59 [2019-09-16 17:09:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,192 INFO L475 AbstractCegarLoop]: Abstraction has 159 states and 186 transitions. [2019-09-16 17:09:59,192 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:09:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 186 transitions. [2019-09-16 17:09:59,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-16 17:09:59,199 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:59,200 INFO L407 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] [2019-09-16 17:09:59,200 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:59,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,200 INFO L82 PathProgramCache]: Analyzing trace with hash -138893135, now seen corresponding path program 1 times [2019-09-16 17:09:59,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:59,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:59,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,205 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:59,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:59,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:09:59,341 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,344 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:09:59,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:09:59,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:59,345 INFO L87 Difference]: Start difference. First operand 159 states and 186 transitions. Second operand 3 states. [2019-09-16 17:09:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:09:59,378 INFO L93 Difference]: Finished difference Result 150 states and 174 transitions. [2019-09-16 17:09:59,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:09:59,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-16 17:09:59,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:09:59,381 INFO L225 Difference]: With dead ends: 150 [2019-09-16 17:09:59,382 INFO L226 Difference]: Without dead ends: 150 [2019-09-16 17:09:59,382 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:09:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-09-16 17:09:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2019-09-16 17:09:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-09-16 17:09:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 174 transitions. [2019-09-16 17:09:59,398 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 174 transitions. Word has length 60 [2019-09-16 17:09:59,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:09:59,399 INFO L475 AbstractCegarLoop]: Abstraction has 150 states and 174 transitions. [2019-09-16 17:09:59,399 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:09:59,399 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 174 transitions. [2019-09-16 17:09:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-16 17:09:59,402 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:09:59,402 INFO L407 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] [2019-09-16 17:09:59,402 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:09:59,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:09:59,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1740604635, now seen corresponding path program 1 times [2019-09-16 17:09:59,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:09:59,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:09:59,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:09:59,406 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:09:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:09:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:09:59,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:09:59,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:09:59,591 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:09:59,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:09:59,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:09:59,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:09:59,593 INFO L87 Difference]: Start difference. First operand 150 states and 174 transitions. Second operand 7 states. [2019-09-16 17:10:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:00,197 INFO L93 Difference]: Finished difference Result 328 states and 390 transitions. [2019-09-16 17:10:00,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 17:10:00,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-16 17:10:00,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:00,203 INFO L225 Difference]: With dead ends: 328 [2019-09-16 17:10:00,203 INFO L226 Difference]: Without dead ends: 328 [2019-09-16 17:10:00,204 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-16 17:10:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-09-16 17:10:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2019-09-16 17:10:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-09-16 17:10:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 384 transitions. [2019-09-16 17:10:00,238 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 384 transitions. Word has length 64 [2019-09-16 17:10:00,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:00,239 INFO L475 AbstractCegarLoop]: Abstraction has 320 states and 384 transitions. [2019-09-16 17:10:00,239 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:10:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 384 transitions. [2019-09-16 17:10:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-16 17:10:00,243 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:00,243 INFO L407 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] [2019-09-16 17:10:00,243 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:00,244 INFO L82 PathProgramCache]: Analyzing trace with hash 659595443, now seen corresponding path program 1 times [2019-09-16 17:10:00,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:00,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:00,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:00,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:00,247 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-16 17:10:00,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:00,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-16 17:10:00,438 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:00,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-16 17:10:00,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-16 17:10:00,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:00,440 INFO L87 Difference]: Start difference. First operand 320 states and 384 transitions. Second operand 7 states. [2019-09-16 17:10:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:01,327 INFO L93 Difference]: Finished difference Result 503 states and 626 transitions. [2019-09-16 17:10:01,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 17:10:01,327 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-16 17:10:01,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:01,337 INFO L225 Difference]: With dead ends: 503 [2019-09-16 17:10:01,340 INFO L226 Difference]: Without dead ends: 503 [2019-09-16 17:10:01,341 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-16 17:10:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2019-09-16 17:10:01,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 450. [2019-09-16 17:10:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2019-09-16 17:10:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 539 transitions. [2019-09-16 17:10:01,411 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 539 transitions. Word has length 70 [2019-09-16 17:10:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:01,412 INFO L475 AbstractCegarLoop]: Abstraction has 450 states and 539 transitions. [2019-09-16 17:10:01,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-16 17:10:01,412 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 539 transitions. [2019-09-16 17:10:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-16 17:10:01,417 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:01,417 INFO L407 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] [2019-09-16 17:10:01,418 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:01,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:01,418 INFO L82 PathProgramCache]: Analyzing trace with hash -73914297, now seen corresponding path program 1 times [2019-09-16 17:10:01,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:01,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:01,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:01,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:01,421 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:10:01,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:01,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:10:01,545 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:01,547 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:10:01,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:10:01,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:10:01,548 INFO L87 Difference]: Start difference. First operand 450 states and 539 transitions. Second operand 6 states. [2019-09-16 17:10:01,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:01,596 INFO L93 Difference]: Finished difference Result 464 states and 555 transitions. [2019-09-16 17:10:01,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:10:01,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-16 17:10:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:01,604 INFO L225 Difference]: With dead ends: 464 [2019-09-16 17:10:01,605 INFO L226 Difference]: Without dead ends: 464 [2019-09-16 17:10:01,605 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-16 17:10:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-09-16 17:10:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 460. [2019-09-16 17:10:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-09-16 17:10:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2019-09-16 17:10:01,657 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 107 [2019-09-16 17:10:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:01,659 INFO L475 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2019-09-16 17:10:01,660 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:10:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2019-09-16 17:10:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-16 17:10:01,667 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:01,667 INFO L407 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] [2019-09-16 17:10:01,668 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:01,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:01,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1854358405, now seen corresponding path program 1 times [2019-09-16 17:10:01,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:01,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:01,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:01,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:01,672 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:10:01,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:01,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:10:01,849 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:01,850 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:10:01,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:10:01,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:10:01,851 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand 8 states. [2019-09-16 17:10:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:01,894 INFO L93 Difference]: Finished difference Result 474 states and 563 transitions. [2019-09-16 17:10:01,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:10:01,897 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-09-16 17:10:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:01,903 INFO L225 Difference]: With dead ends: 474 [2019-09-16 17:10:01,903 INFO L226 Difference]: Without dead ends: 474 [2019-09-16 17:10:01,903 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:10:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2019-09-16 17:10:01,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 468. [2019-09-16 17:10:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-09-16 17:10:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2019-09-16 17:10:01,936 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 107 [2019-09-16 17:10:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:01,937 INFO L475 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2019-09-16 17:10:01,937 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:10:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2019-09-16 17:10:01,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-16 17:10:01,944 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:01,945 INFO L407 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] [2019-09-16 17:10:01,945 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:01,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:01,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1613818276, now seen corresponding path program 1 times [2019-09-16 17:10:01,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:01,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:01,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:01,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:01,953 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:10:02,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:02,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:10:02,084 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:02,084 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:10:02,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:10:02,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:10:02,085 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 4 states. [2019-09-16 17:10:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:02,358 INFO L93 Difference]: Finished difference Result 1016 states and 1261 transitions. [2019-09-16 17:10:02,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:10:02,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-09-16 17:10:02,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:02,366 INFO L225 Difference]: With dead ends: 1016 [2019-09-16 17:10:02,366 INFO L226 Difference]: Without dead ends: 1016 [2019-09-16 17:10:02,367 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:10:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2019-09-16 17:10:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 999. [2019-09-16 17:10:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2019-09-16 17:10:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1224 transitions. [2019-09-16 17:10:02,421 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1224 transitions. Word has length 107 [2019-09-16 17:10:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:02,421 INFO L475 AbstractCegarLoop]: Abstraction has 999 states and 1224 transitions. [2019-09-16 17:10:02,421 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:10:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1224 transitions. [2019-09-16 17:10:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-16 17:10:02,431 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:02,431 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:02,431 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:02,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:02,432 INFO L82 PathProgramCache]: Analyzing trace with hash 608509898, now seen corresponding path program 1 times [2019-09-16 17:10:02,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:02,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:02,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:02,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:02,437 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:02,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-16 17:10:02,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:10:02,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:10:02,637 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:02,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:10:02,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:10:02,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:10:02,639 INFO L87 Difference]: Start difference. First operand 999 states and 1224 transitions. Second operand 9 states. [2019-09-16 17:10:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:03,892 INFO L93 Difference]: Finished difference Result 1953 states and 2395 transitions. [2019-09-16 17:10:03,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-16 17:10:03,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-16 17:10:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:03,905 INFO L225 Difference]: With dead ends: 1953 [2019-09-16 17:10:03,905 INFO L226 Difference]: Without dead ends: 1953 [2019-09-16 17:10:03,906 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-16 17:10:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2019-09-16 17:10:03,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1728. [2019-09-16 17:10:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2019-09-16 17:10:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2083 transitions. [2019-09-16 17:10:03,999 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2083 transitions. Word has length 111 [2019-09-16 17:10:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:03,999 INFO L475 AbstractCegarLoop]: Abstraction has 1728 states and 2083 transitions. [2019-09-16 17:10:04,000 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:10:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2083 transitions. [2019-09-16 17:10:04,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-16 17:10:04,004 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:10:04,004 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:10:04,005 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:10:04,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:04,005 INFO L82 PathProgramCache]: Analyzing trace with hash 866799866, now seen corresponding path program 1 times [2019-09-16 17:10:04,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:10:04,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:04,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:10:04,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:10:04,009 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:10:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:10:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-16 17:10:04,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:10:04,200 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:10:04,201 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2019-09-16 17:10:04,203 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [94], [97], [101], [102], [103], [119], [123], [124], [125], [128], [130], [136], [140], [143], [144], [145], [154], [158], [162], [165], [168], [170], [176], [178], [181], [197], [198], [199], [200], [210], [212], [217], [220], [221], [222], [223], [225], [230], [232], [233], [234], [235], [239], [242], [246], [252], [281], [285], [286], [289], [291], [294], [301], [304], [307], [311], [312], [315], [316], [317], [319], [320], [321], [323], [326], [328], [331], [334], [343], [345], [346], [347], [371], [373], [374], [441], [442], [452], [460], [461], [462], [463], [464], [465], [466], [467], [468], [502], [503], [504], [505], [508], [509], [510], [511], [512], [513], [518], [519], [522], [523], [524], [525], [526], [527], [528], [529], [530], [531], [532], [533], [534], [535], [540], [541], [542], [543], [546], [547], [548], [549], [550], [551], [552], [553], [554], [558], [559], [560], [562], [563], [568], [569], [570] [2019-09-16 17:10:04,251 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:10:04,251 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:10:04,353 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:10:04,355 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-16 17:10:04,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:10:04,359 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:10:04,455 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-16 17:10:04,455 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:10:04,460 INFO L420 sIntCurrentIteration]: We unified 171 AI predicates to 171 [2019-09-16 17:10:04,460 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:10:04,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:10:04,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-16 17:10:04,461 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:10:04,462 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:10:04,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:10:04,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:10:04,463 INFO L87 Difference]: Start difference. First operand 1728 states and 2083 transitions. Second operand 2 states. [2019-09-16 17:10:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:10:04,463 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-16 17:10:04,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:10:04,464 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 172 [2019-09-16 17:10:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:10:04,464 INFO L225 Difference]: With dead ends: 2 [2019-09-16 17:10:04,464 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:10:04,464 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:10:04,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:10:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:10:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:10:04,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:10:04,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2019-09-16 17:10:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:10:04,465 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:10:04,466 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:10:04,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:10:04,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:10:04,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:10:04 BoogieIcfgContainer [2019-09-16 17:10:04,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:10:04,474 INFO L168 Benchmark]: Toolchain (without parser) took 8126.45 ms. Allocated memory was 131.1 MB in the beginning and 326.6 MB in the end (delta: 195.6 MB). Free memory was 85.5 MB in the beginning and 216.4 MB in the end (delta: -131.0 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:04,475 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:10:04,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 848.19 ms. Allocated memory was 131.1 MB in the beginning and 200.8 MB in the end (delta: 69.7 MB). Free memory was 85.3 MB in the beginning and 163.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:04,476 INFO L168 Benchmark]: Boogie Preprocessor took 87.65 ms. Allocated memory is still 200.8 MB. Free memory was 163.4 MB in the beginning and 158.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:04,477 INFO L168 Benchmark]: RCFGBuilder took 1258.19 ms. Allocated memory was 200.8 MB in the beginning and 221.2 MB in the end (delta: 20.4 MB). Free memory was 158.9 MB in the beginning and 188.8 MB in the end (delta: -29.9 MB). Peak memory consumption was 91.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:04,478 INFO L168 Benchmark]: TraceAbstraction took 5927.68 ms. Allocated memory was 221.2 MB in the beginning and 326.6 MB in the end (delta: 105.4 MB). Free memory was 187.5 MB in the beginning and 216.4 MB in the end (delta: -29.0 MB). Peak memory consumption was 76.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:10:04,482 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 848.19 ms. Allocated memory was 131.1 MB in the beginning and 200.8 MB in the end (delta: 69.7 MB). Free memory was 85.3 MB in the beginning and 163.4 MB in the end (delta: -78.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.65 ms. Allocated memory is still 200.8 MB. Free memory was 163.4 MB in the beginning and 158.9 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1258.19 ms. Allocated memory was 200.8 MB in the beginning and 221.2 MB in the end (delta: 20.4 MB). Free memory was 158.9 MB in the beginning and 188.8 MB in the end (delta: -29.9 MB). Peak memory consumption was 91.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5927.68 ms. Allocated memory was 221.2 MB in the beginning and 326.6 MB in the end (delta: 105.4 MB). Free memory was 187.5 MB in the beginning and 216.4 MB in the end (delta: -29.0 MB). Peak memory consumption was 76.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 830]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 258 locations, 1 error locations. SAFE Result, 5.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1623 SDtfs, 1174 SDslu, 3679 SDs, 0 SdLazy, 1812 SolverSat, 323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1728occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8245614035087719 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 313 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 857 NumberOfCodeBlocks, 857 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 848 ConstructedInterpolants, 0 QuantifiedInterpolants, 143606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 59/66 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...