/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:38:47,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:38:47,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:38:47,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:38:47,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:38:47,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:38:47,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:38:47,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:38:47,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:38:47,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:38:47,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:38:47,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:38:47,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:38:47,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:38:47,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:38:47,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:38:47,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:38:47,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:38:47,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:38:47,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:38:47,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:38:47,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:38:47,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:38:47,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:38:47,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:38:47,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:38:47,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:38:47,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:38:47,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:38:47,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:38:47,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:38:47,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:38:47,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:38:47,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:38:47,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:38:47,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:38:47,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:38:47,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:38:47,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:38:47,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:38:47,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:38:47,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:38:47,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:38:47,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:38:47,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:38:47,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:38:47,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:38:47,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:38:47,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:38:47,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:38:47,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:38:47,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:38:47,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:38:47,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:38:47,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:38:47,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:38:47,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:38:47,519 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:38:47,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:38:47,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:38:47,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:38:47,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:38:47,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:38:47,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:38:47,521 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:38:47,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:38:47,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:38:47,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:38:47,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:38:47,804 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:38:47,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-07-07 12:38:47,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38610f5b4/bd07c5bd77c9471cb28b3a2a0ce0f034/FLAG53749943a [2020-07-07 12:38:48,403 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:38:48,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-07-07 12:38:48,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38610f5b4/bd07c5bd77c9471cb28b3a2a0ce0f034/FLAG53749943a [2020-07-07 12:38:48,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38610f5b4/bd07c5bd77c9471cb28b3a2a0ce0f034 [2020-07-07 12:38:48,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:38:48,724 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:38:48,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:38:48,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:38:48,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:38:48,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:38:48" (1/1) ... [2020-07-07 12:38:48,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cc20a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:48, skipping insertion in model container [2020-07-07 12:38:48,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:38:48" (1/1) ... [2020-07-07 12:38:48,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:38:48,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:38:49,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:38:49,247 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:38:49,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:38:49,362 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:38:49,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49 WrapperNode [2020-07-07 12:38:49,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:38:49,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:38:49,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:38:49,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:38:49,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (1/1) ... [2020-07-07 12:38:49,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (1/1) ... [2020-07-07 12:38:49,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (1/1) ... [2020-07-07 12:38:49,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (1/1) ... [2020-07-07 12:38:49,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (1/1) ... [2020-07-07 12:38:49,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (1/1) ... [2020-07-07 12:38:49,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (1/1) ... [2020-07-07 12:38:49,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:38:49,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:38:49,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:38:49,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:38:49,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (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 [2020-07-07 12:38:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:38:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:38:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:38:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:38:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:38:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:38:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:38:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:38:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:38:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:38:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:38:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:38:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:38:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:38:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:38:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:38:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:38:49,518 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:38:49,518 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:38:49,518 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:38:49,519 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:38:49,519 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:38:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:38:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:38:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:38:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:38:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:38:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:38:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:38:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:38:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:38:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:38:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:38:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:38:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:38:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:38:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:38:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:38:49,524 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:38:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:38:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:38:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:38:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:38:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:38:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:38:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:38:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:38:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:38:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:38:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:38:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:38:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:38:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:38:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:38:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:38:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:38:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:38:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:38:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:38:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:38:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:38:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:38:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:38:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-07 12:38:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:38:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:38:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:38:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:38:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:38:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:38:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:38:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:38:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:38:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:38:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:38:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:38:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:38:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:38:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:38:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:38:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:38:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:38:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:38:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:38:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:38:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:38:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:38:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:38:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:38:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:38:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:38:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:38:50,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:38:50,588 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:38:50,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:38:50 BoogieIcfgContainer [2020-07-07 12:38:50,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:38:50,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:38:50,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:38:50,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:38:50,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:38:48" (1/3) ... [2020-07-07 12:38:50,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359bc6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:38:50, skipping insertion in model container [2020-07-07 12:38:50,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:38:49" (2/3) ... [2020-07-07 12:38:50,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@359bc6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:38:50, skipping insertion in model container [2020-07-07 12:38:50,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:38:50" (3/3) ... [2020-07-07 12:38:50,618 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2020-07-07 12:38:50,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:38:50,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:38:50,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:38:50,676 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:38:50,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:38:50,677 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:38:50,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:38:50,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:38:50,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:38:50,678 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:38:50,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:38:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-07-07 12:38:50,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:38:50,732 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:50,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:38:50,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:50,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1971275482, now seen corresponding path program 1 times [2020-07-07 12:38:50,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:50,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033941873] [2020-07-07 12:38:50,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:51,454 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:51,686 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:51,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033941873] [2020-07-07 12:38:51,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:51,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:38:51,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597507944] [2020-07-07 12:38:51,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:38:51,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:51,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:38:51,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:38:51,717 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 3 states. [2020-07-07 12:38:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:38:53,101 INFO L93 Difference]: Finished difference Result 486 states and 576 transitions. [2020-07-07 12:38:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:38:53,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:38:53,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:38:53,137 INFO L225 Difference]: With dead ends: 486 [2020-07-07 12:38:53,138 INFO L226 Difference]: Without dead ends: 301 [2020-07-07 12:38:53,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:38:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-07-07 12:38:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 259. [2020-07-07 12:38:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-07-07 12:38:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 280 transitions. [2020-07-07 12:38:53,294 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 280 transitions. Word has length 142 [2020-07-07 12:38:53,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:38:53,295 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 280 transitions. [2020-07-07 12:38:53,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:38:53,295 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 280 transitions. [2020-07-07 12:38:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:38:53,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:53,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:38:53,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:38:53,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:53,301 INFO L82 PathProgramCache]: Analyzing trace with hash 633899820, now seen corresponding path program 1 times [2020-07-07 12:38:53,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:53,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113785189] [2020-07-07 12:38:53,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:53,704 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:53,799 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:53,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113785189] [2020-07-07 12:38:53,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:53,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:38:53,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321803629] [2020-07-07 12:38:53,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:38:53,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:53,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:38:53,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:38:53,802 INFO L87 Difference]: Start difference. First operand 259 states and 280 transitions. Second operand 4 states. [2020-07-07 12:38:54,387 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:38:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:38:55,288 INFO L93 Difference]: Finished difference Result 399 states and 447 transitions. [2020-07-07 12:38:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:38:55,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:38:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:38:55,294 INFO L225 Difference]: With dead ends: 399 [2020-07-07 12:38:55,294 INFO L226 Difference]: Without dead ends: 284 [2020-07-07 12:38:55,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:38:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-07-07 12:38:55,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 249. [2020-07-07 12:38:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-07-07 12:38:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2020-07-07 12:38:55,404 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 143 [2020-07-07 12:38:55,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:38:55,405 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2020-07-07 12:38:55,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:38:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2020-07-07 12:38:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-07 12:38:55,407 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:55,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:38:55,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:38:55,408 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:55,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1196513202, now seen corresponding path program 1 times [2020-07-07 12:38:55,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:55,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834150902] [2020-07-07 12:38:55,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,705 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:55,847 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:55,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834150902] [2020-07-07 12:38:55,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:55,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:38:55,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039050637] [2020-07-07 12:38:55,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:38:55,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:55,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:38:55,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:38:55,851 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 10 states. [2020-07-07 12:38:56,282 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:38:56,588 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:38:56,823 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:38:57,059 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:38:57,325 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:38:57,548 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:38:59,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:38:59,097 INFO L93 Difference]: Finished difference Result 445 states and 509 transitions. [2020-07-07 12:38:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:38:59,098 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-07 12:38:59,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:38:59,102 INFO L225 Difference]: With dead ends: 445 [2020-07-07 12:38:59,102 INFO L226 Difference]: Without dead ends: 306 [2020-07-07 12:38:59,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-07-07 12:38:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-07 12:38:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 249. [2020-07-07 12:38:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-07-07 12:38:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 266 transitions. [2020-07-07 12:38:59,178 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 266 transitions. Word has length 156 [2020-07-07 12:38:59,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:38:59,179 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 266 transitions. [2020-07-07 12:38:59,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:38:59,179 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 266 transitions. [2020-07-07 12:38:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-07-07 12:38:59,182 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:38:59,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:38:59,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:38:59,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:38:59,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:38:59,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1224764540, now seen corresponding path program 1 times [2020-07-07 12:38:59,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:38:59,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245930827] [2020-07-07 12:38:59,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:38:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,507 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:38:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:38:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:38:59,735 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:38:59,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245930827] [2020-07-07 12:38:59,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:38:59,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 12:38:59,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899360658] [2020-07-07 12:38:59,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 12:38:59,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:38:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 12:38:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 12:38:59,739 INFO L87 Difference]: Start difference. First operand 249 states and 266 transitions. Second operand 7 states. [2020-07-07 12:39:00,401 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:02,012 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:02,811 INFO L93 Difference]: Finished difference Result 625 states and 739 transitions. [2020-07-07 12:39:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 12:39:02,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-07-07 12:39:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:02,816 INFO L225 Difference]: With dead ends: 625 [2020-07-07 12:39:02,817 INFO L226 Difference]: Without dead ends: 486 [2020-07-07 12:39:02,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-07-07 12:39:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 359. [2020-07-07 12:39:02,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-07-07 12:39:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 385 transitions. [2020-07-07 12:39:02,956 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 385 transitions. Word has length 169 [2020-07-07 12:39:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:02,957 INFO L479 AbstractCegarLoop]: Abstraction has 359 states and 385 transitions. [2020-07-07 12:39:02,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 12:39:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 385 transitions. [2020-07-07 12:39:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-07-07 12:39:02,960 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:02,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:02,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:39:02,961 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash -984286957, now seen corresponding path program 1 times [2020-07-07 12:39:02,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:02,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148528581] [2020-07-07 12:39:02,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,337 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:03,586 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:03,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148528581] [2020-07-07 12:39:03,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:03,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:39:03,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553154801] [2020-07-07 12:39:03,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:39:03,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:03,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:39:03,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:03,589 INFO L87 Difference]: Start difference. First operand 359 states and 385 transitions. Second operand 15 states. [2020-07-07 12:39:04,092 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:04,462 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:04,740 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:04,964 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:05,206 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:05,434 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:06,035 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:07,316 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:07,550 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:07,806 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:08,046 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:08,301 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:08,537 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:08,761 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:09,010 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:09,277 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:09,530 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:11,466 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:11,713 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:12,115 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:13,233 INFO L93 Difference]: Finished difference Result 1274 states and 1604 transitions. [2020-07-07 12:39:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-07 12:39:13,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 193 [2020-07-07 12:39:13,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:13,245 INFO L225 Difference]: With dead ends: 1274 [2020-07-07 12:39:13,245 INFO L226 Difference]: Without dead ends: 1025 [2020-07-07 12:39:13,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 12:39:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-07-07 12:39:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 726. [2020-07-07 12:39:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726 states. [2020-07-07 12:39:13,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 805 transitions. [2020-07-07 12:39:13,583 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 805 transitions. Word has length 193 [2020-07-07 12:39:13,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:13,583 INFO L479 AbstractCegarLoop]: Abstraction has 726 states and 805 transitions. [2020-07-07 12:39:13,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:39:13,583 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 805 transitions. [2020-07-07 12:39:13,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-07-07 12:39:13,591 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:13,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:13,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:39:13,593 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:13,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:13,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2018964435, now seen corresponding path program 1 times [2020-07-07 12:39:13,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:13,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654743736] [2020-07-07 12:39:13,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,048 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:14,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:14,433 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:14,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654743736] [2020-07-07 12:39:14,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:14,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:39:14,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376106501] [2020-07-07 12:39:14,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:39:14,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:14,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:39:14,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:14,439 INFO L87 Difference]: Start difference. First operand 726 states and 805 transitions. Second operand 15 states. [2020-07-07 12:39:14,967 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:15,782 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:16,652 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:16,928 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:17,222 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:17,522 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:17,789 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:18,070 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:39:18,323 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:18,632 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-07-07 12:39:18,881 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:19,166 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:19,489 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:19,742 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:21,994 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:22,234 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:22,479 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:39:22,705 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:22,936 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:23,154 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:23,900 INFO L93 Difference]: Finished difference Result 1643 states and 2027 transitions. [2020-07-07 12:39:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-07 12:39:23,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-07-07 12:39:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:23,909 INFO L225 Difference]: With dead ends: 1643 [2020-07-07 12:39:23,909 INFO L226 Difference]: Without dead ends: 1027 [2020-07-07 12:39:23,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=525, Invalid=2231, Unknown=0, NotChecked=0, Total=2756 [2020-07-07 12:39:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-07-07 12:39:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 693. [2020-07-07 12:39:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-07-07 12:39:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 771 transitions. [2020-07-07 12:39:24,119 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 771 transitions. Word has length 273 [2020-07-07 12:39:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:24,119 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 771 transitions. [2020-07-07 12:39:24,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:39:24,119 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 771 transitions. [2020-07-07 12:39:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-07-07 12:39:24,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:24,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:24,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:39:24,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:24,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1535138898, now seen corresponding path program 1 times [2020-07-07 12:39:24,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:24,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647867371] [2020-07-07 12:39:24,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,400 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:24,656 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:24,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647867371] [2020-07-07 12:39:24,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:24,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 12:39:24,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220823572] [2020-07-07 12:39:24,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 12:39:24,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:24,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 12:39:24,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-07 12:39:24,658 INFO L87 Difference]: Start difference. First operand 693 states and 771 transitions. Second operand 15 states. [2020-07-07 12:39:25,266 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:25,566 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:25,834 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:26,057 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:26,284 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:27,104 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:27,340 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:27,591 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:27,852 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:28,116 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:29,600 INFO L93 Difference]: Finished difference Result 1339 states and 1584 transitions. [2020-07-07 12:39:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:39:29,602 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 264 [2020-07-07 12:39:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:29,608 INFO L225 Difference]: With dead ends: 1339 [2020-07-07 12:39:29,608 INFO L226 Difference]: Without dead ends: 756 [2020-07-07 12:39:29,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-07-07 12:39:29,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-07-07 12:39:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 580. [2020-07-07 12:39:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-07-07 12:39:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 641 transitions. [2020-07-07 12:39:29,794 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 641 transitions. Word has length 264 [2020-07-07 12:39:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:29,795 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 641 transitions. [2020-07-07 12:39:29,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 12:39:29,795 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 641 transitions. [2020-07-07 12:39:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-07-07 12:39:29,797 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:29,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:29,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:39:29,798 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:29,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1062474989, now seen corresponding path program 1 times [2020-07-07 12:39:29,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:29,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974114089] [2020-07-07 12:39:29,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,111 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:30,429 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:30,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974114089] [2020-07-07 12:39:30,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:30,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 12:39:30,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149540110] [2020-07-07 12:39:30,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 12:39:30,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 12:39:30,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-07-07 12:39:30,432 INFO L87 Difference]: Start difference. First operand 580 states and 641 transitions. Second operand 16 states. [2020-07-07 12:39:30,958 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:31,859 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:39:34,579 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:34,821 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:35,078 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:35,313 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:35,561 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:35,808 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:36,031 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:36,265 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:36,497 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:36,752 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:36,999 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:37,249 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:37,501 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:37,730 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:37,959 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:38,237 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:38,488 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:38,731 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:39,719 INFO L93 Difference]: Finished difference Result 1756 states and 2105 transitions. [2020-07-07 12:39:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 12:39:39,720 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 269 [2020-07-07 12:39:39,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:39,729 INFO L225 Difference]: With dead ends: 1756 [2020-07-07 12:39:39,729 INFO L226 Difference]: Without dead ends: 1286 [2020-07-07 12:39:39,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=520, Invalid=2030, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 12:39:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2020-07-07 12:39:40,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 965. [2020-07-07 12:39:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-07-07 12:39:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1063 transitions. [2020-07-07 12:39:40,030 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1063 transitions. Word has length 269 [2020-07-07 12:39:40,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:40,030 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1063 transitions. [2020-07-07 12:39:40,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 12:39:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1063 transitions. [2020-07-07 12:39:40,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-07-07 12:39:40,036 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:40,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:40,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:39:40,036 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:40,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:40,037 INFO L82 PathProgramCache]: Analyzing trace with hash -743373737, now seen corresponding path program 1 times [2020-07-07 12:39:40,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:40,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004601758] [2020-07-07 12:39:40,038 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,433 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:39:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:39:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:39:40,729 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:40,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004601758] [2020-07-07 12:39:40,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:39:40,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:39:40,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883126078] [2020-07-07 12:39:40,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:39:40,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:39:40,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:39:40,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:39:40,731 INFO L87 Difference]: Start difference. First operand 965 states and 1063 transitions. Second operand 14 states. [2020-07-07 12:39:41,208 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:41,876 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:43,040 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:43,279 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:43,517 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:43,751 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:43,977 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:44,207 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:39:44,429 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:44,679 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:44,938 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:39:45,171 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:39:46,866 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:39:47,103 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:39:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:39:48,173 INFO L93 Difference]: Finished difference Result 2698 states and 3321 transitions. [2020-07-07 12:39:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-07-07 12:39:48,173 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 273 [2020-07-07 12:39:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:39:48,186 INFO L225 Difference]: With dead ends: 2698 [2020-07-07 12:39:48,186 INFO L226 Difference]: Without dead ends: 2021 [2020-07-07 12:39:48,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=599, Invalid=1563, Unknown=0, NotChecked=0, Total=2162 [2020-07-07 12:39:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2020-07-07 12:39:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1281. [2020-07-07 12:39:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-07-07 12:39:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1428 transitions. [2020-07-07 12:39:48,573 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1428 transitions. Word has length 273 [2020-07-07 12:39:48,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:39:48,574 INFO L479 AbstractCegarLoop]: Abstraction has 1281 states and 1428 transitions. [2020-07-07 12:39:48,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:39:48,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1428 transitions. [2020-07-07 12:39:48,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-07-07 12:39:48,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:39:48,578 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:39:48,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:39:48,578 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:39:48,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:39:48,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1185603479, now seen corresponding path program 2 times [2020-07-07 12:39:48,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:39:48,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902938272] [2020-07-07 12:39:48,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:39:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:39:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:39:48,991 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:39:48,991 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:39:48,991 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:39:48,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 12:39:49,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:39:49 BoogieIcfgContainer [2020-07-07 12:39:49,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:39:49,030 INFO L168 Benchmark]: Toolchain (without parser) took 60307.39 ms. Allocated memory was 144.7 MB in the beginning and 908.1 MB in the end (delta: 763.4 MB). Free memory was 102.1 MB in the beginning and 287.4 MB in the end (delta: -185.3 MB). Peak memory consumption was 578.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:49,031 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 144.7 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 12:39:49,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.46 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 171.3 MB in the end (delta: -69.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:49,032 INFO L168 Benchmark]: Boogie Preprocessor took 84.94 ms. Allocated memory is still 201.9 MB. Free memory was 171.3 MB in the beginning and 167.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:49,033 INFO L168 Benchmark]: RCFGBuilder took 1154.44 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 166.3 MB in the beginning and 177.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:49,034 INFO L168 Benchmark]: TraceAbstraction took 58418.68 ms. Allocated memory was 234.4 MB in the beginning and 908.1 MB in the end (delta: 673.7 MB). Free memory was 177.1 MB in the beginning and 287.4 MB in the end (delta: -110.3 MB). Peak memory consumption was 563.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:39:49,037 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 144.7 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 638.46 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 171.3 MB in the end (delta: -69.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.94 ms. Allocated memory is still 201.9 MB. Free memory was 171.3 MB in the beginning and 167.3 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1154.44 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 166.3 MB in the beginning and 177.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 58418.68 ms. Allocated memory was 234.4 MB in the beginning and 908.1 MB in the end (delta: 673.7 MB). Free memory was 177.1 MB in the beginning and 287.4 MB in the end (delta: -110.3 MB). Peak memory consumption was 563.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 247]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L349] int pumpRunning = 0; [L350] int systemActive = 1; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L281] int splverifierCounter ; [L282] int tmp ; [L283] int tmp___0 ; [L284] int tmp___1 ; [L285] int tmp___2 ; [L288] splverifierCounter = 0 [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND TRUE \read(tmp) [L302] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L302] RET waterRise() [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp___2) [L322] CALL startSystem() [L530] systemActive = 1 [L322] RET startSystem() [L335] CALL timeShift() [L356] COND FALSE !(\read(pumpRunning)) [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND FALSE !(\read(pumpRunning)) [L429] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND TRUE ! pumpRunning [L390] CALL, EXPR isHighWaterLevel() [L508] int retValue_acc ; [L509] int tmp ; [L510] int tmp___0 ; [L514] CALL, EXPR isHighWaterSensorDry() [L229] int retValue_acc ; [L232] COND FALSE !(waterLevel < 2) [L236] retValue_acc = 0 [L237] return (retValue_acc); [L514] RET, EXPR isHighWaterSensorDry() [L514] tmp = isHighWaterSensorDry() [L516] COND FALSE !(\read(tmp)) [L519] tmp___0 = 1 [L521] retValue_acc = tmp___0 [L522] return (retValue_acc); [L390] RET, EXPR isHighWaterLevel() [L390] tmp = isHighWaterLevel() [L392] COND TRUE \read(tmp) [L394] CALL activatePump() [L439] pumpRunning = 1 [L394] RET activatePump() [L429] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp___2) [L322] CALL startSystem() [L530] systemActive = 1 [L322] RET startSystem() [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) [L371] RET __utac_acc__Specification4_spec__1() [L335] RET timeShift() [L290] COND TRUE 1 [L292] COND TRUE splverifierCounter < 4 [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp___2) [L322] CALL startSystem() [L530] systemActive = 1 [L322] RET startSystem() [L335] CALL timeShift() [L356] COND TRUE \read(pumpRunning) [L358] CALL lowerWaterLevel() [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 [L358] RET lowerWaterLevel() [L363] COND TRUE \read(systemActive) [L365] CALL processEnvironment() [L411] int tmp ; [L414] COND TRUE \read(pumpRunning) [L416] CALL, EXPR isMethaneAlarm() [L452] int retValue_acc ; [L456] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L456] RET, EXPR isMethaneLevelCritical() [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); [L416] RET, EXPR isMethaneAlarm() [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L424] CALL processEnvironment__wrappee__highWaterSensor() [L385] int tmp ; [L388] COND FALSE !(! pumpRunning) [L403] FCALL processEnvironment__wrappee__base() [L424] RET processEnvironment__wrappee__highWaterSensor() [L365] RET processEnvironment() [L371] CALL __utac_acc__Specification4_spec__1() [L254] int tmp ; [L255] int tmp___0 ; [L259] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L259] RET, EXPR getWaterLevel() [L259] tmp = getWaterLevel() [L261] COND TRUE tmp == 0 [L263] CALL, EXPR isPumpRunning() [L463] int retValue_acc ; [L466] retValue_acc = pumpRunning [L467] return (retValue_acc); [L263] RET, EXPR isPumpRunning() [L263] tmp___0 = isPumpRunning() [L265] COND TRUE \read(tmp___0) [L267] CALL __automaton_fail() [L247] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 622 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 58.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 50.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2387 SDtfs, 7646 SDslu, 6453 SDs, 0 SdLazy, 15300 SolverSat, 2667 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 591 GetRequests, 341 SyntacticMatches, 7 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2342 ImplicationChecksByTransitivity, 25.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 2131 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...