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_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:35,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:35,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:35,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:35,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:35,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:35,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:35,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:35,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:35,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:35,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:35,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:35,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:35,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:35,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:35,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:35,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:35,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:35,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:35,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:35,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:35,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:35,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:35,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:35,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:35,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:35,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:35,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:35,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:35,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:35,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:35,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:35,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:35,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:35,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:35,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:35,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:35,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:35,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:35,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:35,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:35,445 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 [2019-09-20 13:31:35,470 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:35,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:35,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:35,472 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:35,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:35,473 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:35,473 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:35,473 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:35,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:35,473 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:35,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:35,476 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:35,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:35,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:35,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:35,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:35,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:35,477 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:35,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:35,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:35,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:35,478 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:35,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:35,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:35,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:35,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:35,479 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:35,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:35,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:35,480 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:35,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:35,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:35,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:35,556 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:35,557 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:35,558 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-09-20 13:31:35,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c457ea14b/3ef70a61a1d4459baf3f1b2d24d172f2/FLAGc3cb8994a [2019-09-20 13:31:36,146 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:36,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-09-20 13:31:36,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c457ea14b/3ef70a61a1d4459baf3f1b2d24d172f2/FLAGc3cb8994a [2019-09-20 13:31:36,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c457ea14b/3ef70a61a1d4459baf3f1b2d24d172f2 [2019-09-20 13:31:36,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:36,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:36,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:36,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:36,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:36,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344f0ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36, skipping insertion in model container [2019-09-20 13:31:36,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,525 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:36,568 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:36,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:36,969 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:37,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:37,100 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:37,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37 WrapperNode [2019-09-20 13:31:37,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:37,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:37,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:37,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:37,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (1/1) ... [2019-09-20 13:31:37,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:37,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:37,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:37,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:37,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (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 [2019-09-20 13:31:37,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:37,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:37,281 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:37,282 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:37,283 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:37,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-09-20 13:31:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:37,293 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:37,294 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:37,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:37,296 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-09-20 13:31:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:37,305 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:37,306 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:37,307 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:37,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:37,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:38,406 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:38,407 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:38,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:38 BoogieIcfgContainer [2019-09-20 13:31:38,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:38,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:38,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:38,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:38,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:36" (1/3) ... [2019-09-20 13:31:38,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ea6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:38, skipping insertion in model container [2019-09-20 13:31:38,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:37" (2/3) ... [2019-09-20 13:31:38,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ea6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:38, skipping insertion in model container [2019-09-20 13:31:38,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:38" (3/3) ... [2019-09-20 13:31:38,420 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2019-09-20 13:31:38,430 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:38,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:38,458 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:38,485 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:38,485 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:38,486 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:38,486 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:38,486 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:38,486 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:38,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:38,486 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2019-09-20 13:31:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:38,528 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:38,529 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] [2019-09-20 13:31:38,531 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:38,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:38,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1391539258, now seen corresponding path program 1 times [2019-09-20 13:31:38,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:38,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:38,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:38,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:38,589 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:38,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:38,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:38,912 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:38,919 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:38,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:38,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:38,948 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 2 states. [2019-09-20 13:31:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:39,002 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2019-09-20 13:31:39,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:39,004 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:39,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:39,021 INFO L225 Difference]: With dead ends: 164 [2019-09-20 13:31:39,022 INFO L226 Difference]: Without dead ends: 153 [2019-09-20 13:31:39,023 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 [2019-09-20 13:31:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-09-20 13:31:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2019-09-20 13:31:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-09-20 13:31:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2019-09-20 13:31:39,077 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 59 [2019-09-20 13:31:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:39,078 INFO L475 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2019-09-20 13:31:39,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2019-09-20 13:31:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:39,082 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:39,082 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] [2019-09-20 13:31:39,083 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:39,086 INFO L82 PathProgramCache]: Analyzing trace with hash 404948371, now seen corresponding path program 1 times [2019-09-20 13:31:39,086 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:39,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:39,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,092 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:39,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:39,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:39,245 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:39,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:39,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:39,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:39,248 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 3 states. [2019-09-20 13:31:39,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:39,266 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2019-09-20 13:31:39,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:39,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:39,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:39,270 INFO L225 Difference]: With dead ends: 144 [2019-09-20 13:31:39,270 INFO L226 Difference]: Without dead ends: 144 [2019-09-20 13:31:39,275 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 [2019-09-20 13:31:39,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-09-20 13:31:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-09-20 13:31:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-09-20 13:31:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2019-09-20 13:31:39,293 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 60 [2019-09-20 13:31:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:39,293 INFO L475 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2019-09-20 13:31:39,293 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2019-09-20 13:31:39,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-20 13:31:39,296 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:39,297 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] [2019-09-20 13:31:39,297 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:39,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:39,298 INFO L82 PathProgramCache]: Analyzing trace with hash 539093391, now seen corresponding path program 1 times [2019-09-20 13:31:39,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:39,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:39,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,301 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:39,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:39,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:39,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:39,425 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:39,426 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:39,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:39,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:39,427 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 7 states. [2019-09-20 13:31:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:40,057 INFO L93 Difference]: Finished difference Result 316 states and 380 transitions. [2019-09-20 13:31:40,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:40,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-20 13:31:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:40,066 INFO L225 Difference]: With dead ends: 316 [2019-09-20 13:31:40,068 INFO L226 Difference]: Without dead ends: 316 [2019-09-20 13:31:40,071 INFO L636 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 [2019-09-20 13:31:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2019-09-20 13:31:40,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 304. [2019-09-20 13:31:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2019-09-20 13:31:40,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 368 transitions. [2019-09-20 13:31:40,138 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 368 transitions. Word has length 65 [2019-09-20 13:31:40,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:40,139 INFO L475 AbstractCegarLoop]: Abstraction has 304 states and 368 transitions. [2019-09-20 13:31:40,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:40,139 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 368 transitions. [2019-09-20 13:31:40,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:40,145 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:40,145 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] [2019-09-20 13:31:40,146 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:40,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:40,146 INFO L82 PathProgramCache]: Analyzing trace with hash -652418830, now seen corresponding path program 1 times [2019-09-20 13:31:40,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:40,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:40,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:40,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:40,149 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:40,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:40,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:40,286 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:40,287 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:40,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:40,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:40,288 INFO L87 Difference]: Start difference. First operand 304 states and 368 transitions. Second operand 7 states. [2019-09-20 13:31:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,094 INFO L93 Difference]: Finished difference Result 508 states and 630 transitions. [2019-09-20 13:31:41,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:41,095 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,105 INFO L225 Difference]: With dead ends: 508 [2019-09-20 13:31:41,105 INFO L226 Difference]: Without dead ends: 508 [2019-09-20 13:31:41,108 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 [2019-09-20 13:31:41,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-09-20 13:31:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 454. [2019-09-20 13:31:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 454 states. [2019-09-20 13:31:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 541 transitions. [2019-09-20 13:31:41,177 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 541 transitions. Word has length 70 [2019-09-20 13:31:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,178 INFO L475 AbstractCegarLoop]: Abstraction has 454 states and 541 transitions. [2019-09-20 13:31:41,178 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 541 transitions. [2019-09-20 13:31:41,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:31:41,182 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,182 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] [2019-09-20 13:31:41,182 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,183 INFO L82 PathProgramCache]: Analyzing trace with hash -918633805, now seen corresponding path program 1 times [2019-09-20 13:31:41,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,186 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:41,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:41,312 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,314 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:41,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:41,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:41,315 INFO L87 Difference]: Start difference. First operand 454 states and 541 transitions. Second operand 4 states. [2019-09-20 13:31:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,667 INFO L93 Difference]: Finished difference Result 1224 states and 1527 transitions. [2019-09-20 13:31:41,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:41,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-09-20 13:31:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,679 INFO L225 Difference]: With dead ends: 1224 [2019-09-20 13:31:41,679 INFO L226 Difference]: Without dead ends: 1224 [2019-09-20 13:31:41,679 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 [2019-09-20 13:31:41,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2019-09-20 13:31:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1198. [2019-09-20 13:31:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-09-20 13:31:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1479 transitions. [2019-09-20 13:31:41,744 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1479 transitions. Word has length 108 [2019-09-20 13:31:41,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,745 INFO L475 AbstractCegarLoop]: Abstraction has 1198 states and 1479 transitions. [2019-09-20 13:31:41,745 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1479 transitions. [2019-09-20 13:31:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:31:41,749 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,749 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] [2019-09-20 13:31:41,749 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,750 INFO L82 PathProgramCache]: Analyzing trace with hash -678093676, now seen corresponding path program 1 times [2019-09-20 13:31:41,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,753 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:41,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:41,832 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,832 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:41,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:41,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:41,833 INFO L87 Difference]: Start difference. First operand 1198 states and 1479 transitions. Second operand 6 states. [2019-09-20 13:31:41,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,869 INFO L93 Difference]: Finished difference Result 1240 states and 1531 transitions. [2019-09-20 13:31:41,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:41,870 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2019-09-20 13:31:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,877 INFO L225 Difference]: With dead ends: 1240 [2019-09-20 13:31:41,878 INFO L226 Difference]: Without dead ends: 1240 [2019-09-20 13:31:41,878 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 [2019-09-20 13:31:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2019-09-20 13:31:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1228. [2019-09-20 13:31:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2019-09-20 13:31:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1511 transitions. [2019-09-20 13:31:41,930 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1511 transitions. Word has length 108 [2019-09-20 13:31:41,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,930 INFO L475 AbstractCegarLoop]: Abstraction has 1228 states and 1511 transitions. [2019-09-20 13:31:41,930 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1511 transitions. [2019-09-20 13:31:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-09-20 13:31:41,934 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,934 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] [2019-09-20 13:31:41,934 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1250179026, now seen corresponding path program 1 times [2019-09-20 13:31:41,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,938 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:42,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:42,054 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,054 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:42,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:42,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:42,055 INFO L87 Difference]: Start difference. First operand 1228 states and 1511 transitions. Second operand 8 states. [2019-09-20 13:31:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:42,091 INFO L93 Difference]: Finished difference Result 1017 states and 1238 transitions. [2019-09-20 13:31:42,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:42,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2019-09-20 13:31:42,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:42,097 INFO L225 Difference]: With dead ends: 1017 [2019-09-20 13:31:42,097 INFO L226 Difference]: Without dead ends: 1017 [2019-09-20 13:31:42,098 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 [2019-09-20 13:31:42,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2019-09-20 13:31:42,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1017. [2019-09-20 13:31:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2019-09-20 13:31:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1238 transitions. [2019-09-20 13:31:42,148 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1238 transitions. Word has length 108 [2019-09-20 13:31:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:42,149 INFO L475 AbstractCegarLoop]: Abstraction has 1017 states and 1238 transitions. [2019-09-20 13:31:42,149 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1238 transitions. [2019-09-20 13:31:42,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-20 13:31:42,154 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:42,154 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, 1] [2019-09-20 13:31:42,155 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:42,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:42,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1890897259, now seen corresponding path program 1 times [2019-09-20 13:31:42,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:42,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:42,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:42,158 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:42,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:42,419 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:42,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:42,421 INFO L87 Difference]: Start difference. First operand 1017 states and 1238 transitions. Second operand 9 states. [2019-09-20 13:31:43,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:43,784 INFO L93 Difference]: Finished difference Result 1985 states and 2421 transitions. [2019-09-20 13:31:43,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:43,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 112 [2019-09-20 13:31:43,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:43,796 INFO L225 Difference]: With dead ends: 1985 [2019-09-20 13:31:43,796 INFO L226 Difference]: Without dead ends: 1985 [2019-09-20 13:31:43,797 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 [2019-09-20 13:31:43,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2019-09-20 13:31:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1752. [2019-09-20 13:31:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1752 states. [2019-09-20 13:31:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1752 states to 1752 states and 2101 transitions. [2019-09-20 13:31:43,889 INFO L78 Accepts]: Start accepts. Automaton has 1752 states and 2101 transitions. Word has length 112 [2019-09-20 13:31:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:43,890 INFO L475 AbstractCegarLoop]: Abstraction has 1752 states and 2101 transitions. [2019-09-20 13:31:43,890 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1752 states and 2101 transitions. [2019-09-20 13:31:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-20 13:31:43,895 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,896 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, 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] [2019-09-20 13:31:43,896 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,896 INFO L82 PathProgramCache]: Analyzing trace with hash 828062466, now seen corresponding path program 1 times [2019-09-20 13:31:43,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,900 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-20 13:31:44,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:44,166 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:44,167 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2019-09-20 13:31:44,170 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [125], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [173], [179], [196], [198], [203], [206], [207], [209], [214], [216], [217], [218], [219], [223], [226], [230], [236], [263], [264], [267], [271], [276], [280], [281], [284], [285], [286], [288], [289], [290], [292], [295], [297], [300], [303], [312], [314], [315], [318], [320], [323], [330], [333], [334], [335], [359], [361], [362], [380], [381], [431], [432], [442], [450], [451], [452], [453], [454], [455], [456], [457], [458], [492], [493], [496], [497], [498], [499], [500], [501], [508], [509], [512], [513], [514], [515], [516], [517], [518], [519], [520], [521], [522], [523], [524], [525], [530], [531], [532], [533], [534], [535], [536], [538], [539], [540], [541], [544], [545], [548], [549], [550], [552], [553], [558], [559], [560] [2019-09-20 13:31:44,219 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:44,219 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:44,327 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:44,329 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. [2019-09-20 13:31:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:44,336 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:44,414 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:44,415 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:44,420 INFO L420 sIntCurrentIteration]: We unified 171 AI predicates to 171 [2019-09-20 13:31:44,420 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:44,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:44,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:44,421 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:44,422 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:44,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:44,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:44,423 INFO L87 Difference]: Start difference. First operand 1752 states and 2101 transitions. Second operand 2 states. [2019-09-20 13:31:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:44,423 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:44,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:44,424 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 172 [2019-09-20 13:31:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:44,424 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:44,424 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:44,425 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 [2019-09-20 13:31:44,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:44,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:44,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2019-09-20 13:31:44,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:44,426 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:44,426 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:44,426 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:44,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:44,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:44 BoogieIcfgContainer [2019-09-20 13:31:44,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:44,436 INFO L168 Benchmark]: Toolchain (without parser) took 7923.43 ms. Allocated memory was 130.5 MB in the beginning and 368.1 MB in the end (delta: 237.5 MB). Free memory was 85.4 MB in the beginning and 292.2 MB in the end (delta: -206.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,437 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 130.5 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.93 ms. Allocated memory was 130.5 MB in the beginning and 197.1 MB in the end (delta: 66.6 MB). Free memory was 85.2 MB in the beginning and 160.7 MB in the end (delta: -75.5 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,440 INFO L168 Benchmark]: Boogie Preprocessor took 111.65 ms. Allocated memory is still 197.1 MB. Free memory was 160.7 MB in the beginning and 156.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,441 INFO L168 Benchmark]: RCFGBuilder took 1190.31 ms. Allocated memory was 197.1 MB in the beginning and 216.0 MB in the end (delta: 18.9 MB). Free memory was 156.7 MB in the beginning and 183.5 MB in the end (delta: -26.8 MB). Peak memory consumption was 94.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,445 INFO L168 Benchmark]: TraceAbstraction took 6022.16 ms. Allocated memory was 216.0 MB in the beginning and 368.1 MB in the end (delta: 152.0 MB). Free memory was 183.5 MB in the beginning and 292.2 MB in the end (delta: -108.7 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,452 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 130.5 MB. Free memory was 104.7 MB in the beginning and 104.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 588.93 ms. Allocated memory was 130.5 MB in the beginning and 197.1 MB in the end (delta: 66.6 MB). Free memory was 85.2 MB in the beginning and 160.7 MB in the end (delta: -75.5 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.65 ms. Allocated memory is still 197.1 MB. Free memory was 160.7 MB in the beginning and 156.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1190.31 ms. Allocated memory was 197.1 MB in the beginning and 216.0 MB in the end (delta: 18.9 MB). Free memory was 156.7 MB in the beginning and 183.5 MB in the end (delta: -26.8 MB). Peak memory consumption was 94.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6022.16 ms. Allocated memory was 216.0 MB in the beginning and 368.1 MB in the end (delta: 152.0 MB). Free memory was 183.5 MB in the beginning and 292.2 MB in the end (delta: -108.7 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 410]: 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 43 procedures, 252 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1623 SDtfs, 1204 SDslu, 3595 SDs, 0 SdLazy, 1812 SolverSat, 336 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1752occurred 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, 0.8128654970760234 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 337 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 862 NumberOfCodeBlocks, 862 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 853 ConstructedInterpolants, 0 QuantifiedInterpolants, 146027 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 68/75 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...