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_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:51:11,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:51:11,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:51:11,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 02:51:11,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 02:51:11,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 02:51:11,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 02:51:11,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 02:51:11,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 02:51:11,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 02:51:11,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 02:51:11,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 02:51:11,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 02:51:11,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 02:51:11,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 02:51:11,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 02:51:11,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 02:51:11,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 02:51:11,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 02:51:11,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 02:51:11,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 02:51:11,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 02:51:11,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 02:51:11,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 02:51:11,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 02:51:11,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 02:51:11,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 02:51:11,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 02:51:11,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 02:51:11,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 02:51:11,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 02:51:11,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 02:51:11,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 02:51:11,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 02:51:11,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 02:51:11,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 02:51:11,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 02:51:11,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 02:51:11,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:51:11,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:51:11,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:51:11,353 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 [2019-09-10 02:51:11,367 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:51:11,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:51:11,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:51:11,368 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:51:11,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:51:11,369 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:51:11,369 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:51:11,369 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:51:11,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:51:11,370 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:51:11,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:51:11,370 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:51:11,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:51:11,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:51:11,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:51:11,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:51:11,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:51:11,372 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:51:11,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:51:11,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:51:11,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:51:11,372 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:51:11,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:51:11,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:51:11,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:51:11,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:51:11,373 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:51:11,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:51:11,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:51:11,374 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:51:11,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:51:11,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:51:11,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:51:11,421 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:51:11,421 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:51:11,422 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-09-10 02:51:11,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8621a10/a6e0f37b1c864b47bb83bd44fb58296a/FLAGe413c83c2 [2019-09-10 02:51:12,069 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:51:12,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product56.cil.c [2019-09-10 02:51:12,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8621a10/a6e0f37b1c864b47bb83bd44fb58296a/FLAGe413c83c2 [2019-09-10 02:51:12,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd8621a10/a6e0f37b1c864b47bb83bd44fb58296a [2019-09-10 02:51:12,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:51:12,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:51:12,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:12,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:51:12,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:51:12,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6742944b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:12, skipping insertion in model container [2019-09-10 02:51:12,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:12" (1/1) ... [2019-09-10 02:51:12,334 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:51:12,401 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:51:12,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:12,841 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:51:13,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:13,048 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:51:13,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13 WrapperNode [2019-09-10 02:51:13,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:13,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:51:13,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:51:13,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:51:13,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (1/1) ... [2019-09-10 02:51:13,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (1/1) ... [2019-09-10 02:51:13,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (1/1) ... [2019-09-10 02:51:13,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (1/1) ... [2019-09-10 02:51:13,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (1/1) ... [2019-09-10 02:51:13,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (1/1) ... [2019-09-10 02:51:13,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (1/1) ... [2019-09-10 02:51:13,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:51:13,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:51:13,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:51:13,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:51:13,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (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 [2019-09-10 02:51:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:51:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:51:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-10 02:51:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-10 02:51:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-10 02:51:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-10 02:51:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-10 02:51:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-10 02:51:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-10 02:51:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-10 02:51:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-09-10 02:51:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-10 02:51:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-10 02:51:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-09-10 02:51:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-10 02:51:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-10 02:51:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-10 02:51:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-10 02:51:13,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-10 02:51:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-10 02:51:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-10 02:51:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-10 02:51:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-09-10 02:51:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-10 02:51:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-10 02:51:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-10 02:51:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-10 02:51:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-10 02:51:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-10 02:51:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-10 02:51:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-10 02:51:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-10 02:51:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-10 02:51:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-10 02:51:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-10 02:51:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-10 02:51:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-10 02:51:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-10 02:51:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-10 02:51:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-10 02:51:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-10 02:51:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-10 02:51:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-10 02:51:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-10 02:51:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:51:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:51:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:51:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-10 02:51:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-10 02:51:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-10 02:51:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-10 02:51:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-10 02:51:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-10 02:51:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-10 02:51:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-10 02:51:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-09-10 02:51:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 02:51:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-10 02:51:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-10 02:51:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-10 02:51:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-10 02:51:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-10 02:51:13,231 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-10 02:51:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-10 02:51:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-10 02:51:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-10 02:51:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-10 02:51:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-10 02:51:13,232 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-10 02:51:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-09-10 02:51:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-09-10 02:51:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-09-10 02:51:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-10 02:51:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-10 02:51:13,233 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-10 02:51:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-10 02:51:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-10 02:51:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-10 02:51:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-10 02:51:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-10 02:51:13,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-10 02:51:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-10 02:51:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 02:51:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 02:51:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-10 02:51:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 02:51:13,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 02:51:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 02:51:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 02:51:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-10 02:51:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 02:51:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-10 02:51:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-10 02:51:13,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 02:51:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-10 02:51:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-10 02:51:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-10 02:51:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-10 02:51:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-10 02:51:13,237 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-10 02:51:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:51:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:51:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-10 02:51:13,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:51:14,442 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:51:14,443 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 02:51:14,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:14 BoogieIcfgContainer [2019-09-10 02:51:14,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:51:14,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:51:14,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:51:14,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:51:14,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:51:12" (1/3) ... [2019-09-10 02:51:14,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372f35be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:14, skipping insertion in model container [2019-09-10 02:51:14,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:13" (2/3) ... [2019-09-10 02:51:14,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372f35be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:14, skipping insertion in model container [2019-09-10 02:51:14,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:14" (3/3) ... [2019-09-10 02:51:14,455 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product56.cil.c [2019-09-10 02:51:14,467 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:51:14,479 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:51:14,498 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:51:14,529 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:51:14,529 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:51:14,530 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:51:14,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:51:14,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:51:14,530 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:51:14,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:51:14,531 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:51:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2019-09-10 02:51:14,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-10 02:51:14,575 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:14,576 INFO L399 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] [2019-09-10 02:51:14,580 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:14,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1747867680, now seen corresponding path program 1 times [2019-09-10 02:51:14,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:14,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:14,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:14,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:14,642 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:15,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:15,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 02:51:15,010 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:15,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:51:15,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:51:15,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:15,038 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 2 states. [2019-09-10 02:51:15,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:15,091 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2019-09-10 02:51:15,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:51:15,093 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-10 02:51:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:15,107 INFO L225 Difference]: With dead ends: 177 [2019-09-10 02:51:15,107 INFO L226 Difference]: Without dead ends: 166 [2019-09-10 02:51:15,109 INFO L628 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 [2019-09-10 02:51:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2019-09-10 02:51:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2019-09-10 02:51:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-09-10 02:51:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 196 transitions. [2019-09-10 02:51:15,170 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 196 transitions. Word has length 59 [2019-09-10 02:51:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:15,170 INFO L475 AbstractCegarLoop]: Abstraction has 166 states and 196 transitions. [2019-09-10 02:51:15,171 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:51:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 196 transitions. [2019-09-10 02:51:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-10 02:51:15,175 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:15,175 INFO L399 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] [2019-09-10 02:51:15,176 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:15,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:15,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2102602730, now seen corresponding path program 1 times [2019-09-10 02:51:15,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:15,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:15,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:15,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:15,178 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:15,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:15,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 02:51:15,278 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:15,280 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 02:51:15,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 02:51:15,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 02:51:15,281 INFO L87 Difference]: Start difference. First operand 166 states and 196 transitions. Second operand 3 states. [2019-09-10 02:51:15,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:15,299 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2019-09-10 02:51:15,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 02:51:15,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-10 02:51:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:15,303 INFO L225 Difference]: With dead ends: 157 [2019-09-10 02:51:15,304 INFO L226 Difference]: Without dead ends: 157 [2019-09-10 02:51:15,305 INFO L628 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 [2019-09-10 02:51:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2019-09-10 02:51:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2019-09-10 02:51:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-09-10 02:51:15,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2019-09-10 02:51:15,321 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 60 [2019-09-10 02:51:15,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:15,322 INFO L475 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2019-09-10 02:51:15,322 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 02:51:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2019-09-10 02:51:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 02:51:15,325 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:15,326 INFO L399 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] [2019-09-10 02:51:15,326 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:15,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1388581610, now seen corresponding path program 1 times [2019-09-10 02:51:15,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:15,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:15,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:15,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:15,328 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:15,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:15,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:51:15,509 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:15,510 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:51:15,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:51:15,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:15,510 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand 7 states. [2019-09-10 02:51:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:16,226 INFO L93 Difference]: Finished difference Result 342 states and 412 transitions. [2019-09-10 02:51:16,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:51:16,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-10 02:51:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:16,234 INFO L225 Difference]: With dead ends: 342 [2019-09-10 02:51:16,235 INFO L226 Difference]: Without dead ends: 342 [2019-09-10 02:51:16,236 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-10 02:51:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2019-09-10 02:51:16,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 330. [2019-09-10 02:51:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2019-09-10 02:51:16,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 400 transitions. [2019-09-10 02:51:16,307 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 400 transitions. Word has length 65 [2019-09-10 02:51:16,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:16,308 INFO L475 AbstractCegarLoop]: Abstraction has 330 states and 400 transitions. [2019-09-10 02:51:16,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:16,308 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 400 transitions. [2019-09-10 02:51:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 02:51:16,317 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:16,319 INFO L399 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] [2019-09-10 02:51:16,320 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:16,320 INFO L82 PathProgramCache]: Analyzing trace with hash -262157671, now seen corresponding path program 1 times [2019-09-10 02:51:16,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:16,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:16,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:16,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:16,322 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:16,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:16,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:51:16,465 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:16,466 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:51:16,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:51:16,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:16,466 INFO L87 Difference]: Start difference. First operand 330 states and 400 transitions. Second operand 7 states. [2019-09-10 02:51:17,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:17,282 INFO L93 Difference]: Finished difference Result 530 states and 662 transitions. [2019-09-10 02:51:17,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-10 02:51:17,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-10 02:51:17,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:17,294 INFO L225 Difference]: With dead ends: 530 [2019-09-10 02:51:17,295 INFO L226 Difference]: Without dead ends: 530 [2019-09-10 02:51:17,299 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-10 02:51:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2019-09-10 02:51:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 476. [2019-09-10 02:51:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-09-10 02:51:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 573 transitions. [2019-09-10 02:51:17,383 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 573 transitions. Word has length 70 [2019-09-10 02:51:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:17,385 INFO L475 AbstractCegarLoop]: Abstraction has 476 states and 573 transitions. [2019-09-10 02:51:17,385 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:17,386 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 573 transitions. [2019-09-10 02:51:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 02:51:17,391 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:17,391 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:17,391 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:17,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:17,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1621424268, now seen corresponding path program 1 times [2019-09-10 02:51:17,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:17,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:17,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:17,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:17,394 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:17,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:17,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:51:17,566 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:17,567 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:51:17,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:51:17,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:51:17,568 INFO L87 Difference]: Start difference. First operand 476 states and 573 transitions. Second operand 6 states. [2019-09-10 02:51:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:17,618 INFO L93 Difference]: Finished difference Result 486 states and 583 transitions. [2019-09-10 02:51:17,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:51:17,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-10 02:51:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:17,625 INFO L225 Difference]: With dead ends: 486 [2019-09-10 02:51:17,625 INFO L226 Difference]: Without dead ends: 486 [2019-09-10 02:51:17,625 INFO L628 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 [2019-09-10 02:51:17,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-09-10 02:51:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2019-09-10 02:51:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2019-09-10 02:51:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2019-09-10 02:51:17,658 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 98 [2019-09-10 02:51:17,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:17,659 INFO L475 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2019-09-10 02:51:17,659 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:51:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2019-09-10 02:51:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 02:51:17,665 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:17,665 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:17,666 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:17,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1693810826, now seen corresponding path program 1 times [2019-09-10 02:51:17,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:17,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:17,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:17,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:17,669 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:17,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:17,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-10 02:51:17,834 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:17,835 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-10 02:51:17,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-10 02:51:17,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:51:17,836 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 8 states. [2019-09-10 02:51:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:17,874 INFO L93 Difference]: Finished difference Result 500 states and 597 transitions. [2019-09-10 02:51:17,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-10 02:51:17,875 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2019-09-10 02:51:17,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:17,881 INFO L225 Difference]: With dead ends: 500 [2019-09-10 02:51:17,882 INFO L226 Difference]: Without dead ends: 500 [2019-09-10 02:51:17,883 INFO L628 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 [2019-09-10 02:51:17,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-09-10 02:51:17,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 494. [2019-09-10 02:51:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 494 states. [2019-09-10 02:51:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 591 transitions. [2019-09-10 02:51:17,913 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 591 transitions. Word has length 98 [2019-09-10 02:51:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:17,914 INFO L475 AbstractCegarLoop]: Abstraction has 494 states and 591 transitions. [2019-09-10 02:51:17,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-10 02:51:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 591 transitions. [2019-09-10 02:51:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-10 02:51:17,920 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:17,920 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:17,921 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1364045065, now seen corresponding path program 1 times [2019-09-10 02:51:17,922 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:17,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:17,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:17,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:17,926 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:18,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:18,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:51:18,076 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:18,077 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:51:18,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:51:18,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:51:18,078 INFO L87 Difference]: Start difference. First operand 494 states and 591 transitions. Second operand 4 states. [2019-09-10 02:51:18,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:18,426 INFO L93 Difference]: Finished difference Result 1112 states and 1381 transitions. [2019-09-10 02:51:18,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:51:18,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2019-09-10 02:51:18,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:18,435 INFO L225 Difference]: With dead ends: 1112 [2019-09-10 02:51:18,435 INFO L226 Difference]: Without dead ends: 1112 [2019-09-10 02:51:18,436 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:51:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-09-10 02:51:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1095. [2019-09-10 02:51:18,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1095 states. [2019-09-10 02:51:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1344 transitions. [2019-09-10 02:51:18,498 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1344 transitions. Word has length 98 [2019-09-10 02:51:18,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:18,499 INFO L475 AbstractCegarLoop]: Abstraction has 1095 states and 1344 transitions. [2019-09-10 02:51:18,499 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:51:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1344 transitions. [2019-09-10 02:51:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-10 02:51:18,542 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:18,542 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:18,542 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:18,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:18,543 INFO L82 PathProgramCache]: Analyzing trace with hash 884836017, now seen corresponding path program 1 times [2019-09-10 02:51:18,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:18,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:18,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:18,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:18,544 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-10 02:51:18,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:18,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-09-10 02:51:18,791 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:18,793 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-10 02:51:18,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-10 02:51:18,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-09-10 02:51:18,793 INFO L87 Difference]: Start difference. First operand 1095 states and 1344 transitions. Second operand 11 states. [2019-09-10 02:51:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:19,986 INFO L93 Difference]: Finished difference Result 2017 states and 2506 transitions. [2019-09-10 02:51:19,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-10 02:51:19,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2019-09-10 02:51:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:19,999 INFO L225 Difference]: With dead ends: 2017 [2019-09-10 02:51:19,999 INFO L226 Difference]: Without dead ends: 2017 [2019-09-10 02:51:20,000 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-09-10 02:51:20,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2019-09-10 02:51:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1784. [2019-09-10 02:51:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1784 states. [2019-09-10 02:51:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2194 transitions. [2019-09-10 02:51:20,113 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2194 transitions. Word has length 102 [2019-09-10 02:51:20,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:20,115 INFO L475 AbstractCegarLoop]: Abstraction has 1784 states and 2194 transitions. [2019-09-10 02:51:20,115 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-10 02:51:20,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2194 transitions. [2019-09-10 02:51:20,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-09-10 02:51:20,126 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:20,127 INFO L399 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, 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] [2019-09-10 02:51:20,127 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:20,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:20,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1627137653, now seen corresponding path program 1 times [2019-09-10 02:51:20,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:20,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:20,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:20,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:20,130 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 02:51:20,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:51:20,457 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:51:20,458 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2019-09-10 02:51:20,476 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], [184], [190], [198], [199], [209], [210], [211], [212], [213], [215], [220], [222], [223], [224], [225], [229], [232], [236], [242], [271], [275], [278], [281], [283], [286], [293], [296], [299], [303], [304], [307], [310], [312], [318], [322], [325], [326], [327], [328], [330], [331], [332], [334], [337], [339], [342], [345], [354], [356], [357], [358], [382], [384], [385], [452], [453], [463], [471], [472], [473], [474], [475], [476], [477], [478], [479], [513], [514], [515], [516], [519], [520], [521], [522], [523], [524], [531], [532], [535], [536], [537], [538], [539], [540], [541], [542], [543], [544], [549], [550], [551], [552], [555], [556], [557], [558], [561], [562], [563], [564], [565], [566], [567], [568], [569], [570], [571], [575], [576], [577], [579], [580], [585], [586], [587] [2019-09-10 02:51:20,534 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:51:20,534 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:51:20,609 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 02:51:20,611 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. [2019-09-10 02:51:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:20,616 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 02:51:20,676 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-10 02:51:20,676 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 02:51:20,681 INFO L420 sIntCurrentIteration]: We unified 179 AI predicates to 179 [2019-09-10 02:51:20,681 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 02:51:20,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 02:51:20,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-10 02:51:20,683 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:20,683 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 02:51:20,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 02:51:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:20,684 INFO L87 Difference]: Start difference. First operand 1784 states and 2194 transitions. Second operand 2 states. [2019-09-10 02:51:20,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:20,685 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-10 02:51:20,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 02:51:20,685 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 180 [2019-09-10 02:51:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:20,685 INFO L225 Difference]: With dead ends: 2 [2019-09-10 02:51:20,685 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:51:20,686 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 02:51:20,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:51:20,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:51:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:51:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:51:20,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 180 [2019-09-10 02:51:20,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:20,687 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:51:20,687 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 02:51:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:51:20,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:51:20,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:51:20 BoogieIcfgContainer [2019-09-10 02:51:20,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:51:20,695 INFO L168 Benchmark]: Toolchain (without parser) took 8378.81 ms. Allocated memory was 132.1 MB in the beginning and 331.4 MB in the end (delta: 199.2 MB). Free memory was 86.8 MB in the beginning and 212.6 MB in the end (delta: -125.9 MB). Peak memory consumption was 73.4 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:20,696 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 132.1 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:51:20,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.76 ms. Allocated memory was 132.1 MB in the beginning and 198.7 MB in the end (delta: 66.6 MB). Free memory was 86.6 MB in the beginning and 162.7 MB in the end (delta: -76.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:20,698 INFO L168 Benchmark]: Boogie Preprocessor took 109.05 ms. Allocated memory is still 198.7 MB. Free memory was 162.7 MB in the beginning and 158.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:20,699 INFO L168 Benchmark]: RCFGBuilder took 1286.66 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 158.2 MB in the beginning and 186.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:20,700 INFO L168 Benchmark]: TraceAbstraction took 6246.32 ms. Allocated memory was 221.8 MB in the beginning and 331.4 MB in the end (delta: 109.6 MB). Free memory was 186.7 MB in the beginning and 212.6 MB in the end (delta: -25.9 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:20,704 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 132.1 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.76 ms. Allocated memory was 132.1 MB in the beginning and 198.7 MB in the end (delta: 66.6 MB). Free memory was 86.6 MB in the beginning and 162.7 MB in the end (delta: -76.1 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.05 ms. Allocated memory is still 198.7 MB. Free memory was 162.7 MB in the beginning and 158.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1286.66 ms. Allocated memory was 198.7 MB in the beginning and 221.8 MB in the end (delta: 23.1 MB). Free memory was 158.2 MB in the beginning and 186.7 MB in the end (delta: -28.5 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6246.32 ms. Allocated memory was 221.8 MB in the beginning and 331.4 MB in the end (delta: 109.6 MB). Free memory was 186.7 MB in the beginning and 212.6 MB in the end (delta: -25.9 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 521]: 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 45 procedures, 265 locations, 1 error locations. SAFE Result, 6.1s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1704 SDtfs, 1404 SDslu, 3887 SDs, 0 SdLazy, 1838 SolverSat, 460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1784occurred 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, 0.8044692737430168 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 830 NumberOfCodeBlocks, 830 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 821 ConstructedInterpolants, 0 QuantifiedInterpolants, 142249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 62/71 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...