/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:34:14,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:34:14,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:34:14,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:34:14,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:34:14,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:34:14,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:34:14,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:34:14,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:34:14,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:34:14,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:34:14,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:34:14,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:34:14,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:34:14,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:34:14,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:34:14,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:34:14,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:34:14,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:34:14,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:34:14,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:34:14,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:34:14,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:34:14,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:34:14,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:34:14,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:34:14,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:34:14,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:34:14,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:34:14,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:34:14,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:34:14,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:34:14,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:34:14,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:34:14,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:34:14,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:34:14,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:34:14,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:34:14,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:34:14,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:34:14,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:34:14,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:34:14,436 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:34:14,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:34:14,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:34:14,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:34:14,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:34:14,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:34:14,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:34:14,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:34:14,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:34:14,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:34:14,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:34:14,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:34:14,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:34:14,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:34:14,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:34:14,443 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:34:14,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:34:14,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:34:14,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:34:14,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:34:14,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:34:14,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:34:14,444 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:34:14,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:34:14,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:34:14,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:34:14,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:34:14,936 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:34:14,937 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-09-04 15:34:15,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9917b1c/32a152db83164c6eb9a117ea6cbb719b/FLAG6223e5c9d [2020-09-04 15:34:15,583 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:34:15,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product44.cil.c [2020-09-04 15:34:15,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9917b1c/32a152db83164c6eb9a117ea6cbb719b/FLAG6223e5c9d [2020-09-04 15:34:15,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd9917b1c/32a152db83164c6eb9a117ea6cbb719b [2020-09-04 15:34:15,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:34:15,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:34:15,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:34:15,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:34:15,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:34:15,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:34:15" (1/1) ... [2020-09-04 15:34:15,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4365ba2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:15, skipping insertion in model container [2020-09-04 15:34:15,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:34:15" (1/1) ... [2020-09-04 15:34:15,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:34:15,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:34:16,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:34:16,496 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:34:16,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:34:16,652 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:34:16,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16 WrapperNode [2020-09-04 15:34:16,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:34:16,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:34:16,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:34:16,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:34:16,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (1/1) ... [2020-09-04 15:34:16,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (1/1) ... [2020-09-04 15:34:16,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (1/1) ... [2020-09-04 15:34:16,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (1/1) ... [2020-09-04 15:34:16,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (1/1) ... [2020-09-04 15:34:16,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (1/1) ... [2020-09-04 15:34:16,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (1/1) ... [2020-09-04 15:34:16,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:34:16,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:34:16,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:34:16,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:34:16,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 15:34:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:34:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:34:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:34:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:34:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:34:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:34:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:34:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:34:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:34:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:34:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:34:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:34:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:34:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:34:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:34:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:34:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:34:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:34:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:34:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:34:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:34:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:34:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:34:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:34:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:34:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:34:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:34:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:34:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:34:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:34:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:34:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:34:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:34:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:34:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:34:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:34:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:34:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:34:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:34:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:34:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:34:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:34:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:34:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:34:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:34:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:34:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-04 15:34:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:34:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:34:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:34:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:34:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:34:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:34:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:34:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:34:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:34:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:34:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:34:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:34:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:34:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:34:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:34:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:34:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:34:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:34:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:34:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:34:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:34:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:34:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:34:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:34:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:34:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:34:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:34:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:34:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:34:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:34:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:34:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:34:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:34:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:34:16,893 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:34:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:34:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:34:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:34:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:34:16,894 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:34:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:34:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:34:16,895 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:34:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:34:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:34:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:34:16,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:34:18,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:34:18,013 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:34:18,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:34:18 BoogieIcfgContainer [2020-09-04 15:34:18,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:34:18,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:34:18,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:34:18,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:34:18,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:34:15" (1/3) ... [2020-09-04 15:34:18,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0d7b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:34:18, skipping insertion in model container [2020-09-04 15:34:18,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:34:16" (2/3) ... [2020-09-04 15:34:18,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0d7b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:34:18, skipping insertion in model container [2020-09-04 15:34:18,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:34:18" (3/3) ... [2020-09-04 15:34:18,029 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2020-09-04 15:34:18,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:34:18,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:34:18,075 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:34:18,104 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:34:18,105 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:34:18,105 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:34:18,105 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:34:18,105 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:34:18,105 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:34:18,105 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:34:18,106 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:34:18,130 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-09-04 15:34:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:34:18,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:18,154 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] [2020-09-04 15:34:18,155 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:18,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:18,163 INFO L82 PathProgramCache]: Analyzing trace with hash 944307102, now seen corresponding path program 1 times [2020-09-04 15:34:18,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:18,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014507699] [2020-09-04 15:34:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:18,255 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:18,986 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:19,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:19,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:19,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:34:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:34:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:19,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014507699] [2020-09-04 15:34:19,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:19,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:34:19,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824102688] [2020-09-04 15:34:19,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:34:19,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:19,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:34:19,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:34:19,265 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 3 states. [2020-09-04 15:34:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:20,653 INFO L93 Difference]: Finished difference Result 494 states and 582 transitions. [2020-09-04 15:34:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:34:20,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:34:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:20,688 INFO L225 Difference]: With dead ends: 494 [2020-09-04 15:34:20,689 INFO L226 Difference]: Without dead ends: 306 [2020-09-04 15:34:20,698 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 [2020-09-04 15:34:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-04 15:34:20,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 262. [2020-09-04 15:34:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-04 15:34:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 282 transitions. [2020-09-04 15:34:20,871 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 282 transitions. Word has length 142 [2020-09-04 15:34:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:20,874 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 282 transitions. [2020-09-04 15:34:20,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:34:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 282 transitions. [2020-09-04 15:34:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:34:20,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:20,887 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] [2020-09-04 15:34:20,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:34:20,887 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:20,888 INFO L82 PathProgramCache]: Analyzing trace with hash 990794439, now seen corresponding path program 1 times [2020-09-04 15:34:20,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:20,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467915746] [2020-09-04 15:34:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:20,891 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:21,327 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:21,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:21,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:21,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:21,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:34:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:21,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:34:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:21,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467915746] [2020-09-04 15:34:21,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:21,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:34:21,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817297993] [2020-09-04 15:34:21,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:34:21,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:21,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:34:21,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:34:21,433 INFO L87 Difference]: Start difference. First operand 262 states and 282 transitions. Second operand 4 states. [2020-09-04 15:34:22,113 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:23,106 INFO L93 Difference]: Finished difference Result 398 states and 443 transitions. [2020-09-04 15:34:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:34:23,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:34:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:23,112 INFO L225 Difference]: With dead ends: 398 [2020-09-04 15:34:23,112 INFO L226 Difference]: Without dead ends: 289 [2020-09-04 15:34:23,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:34:23,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-04 15:34:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 252. [2020-09-04 15:34:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-04 15:34:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 269 transitions. [2020-09-04 15:34:23,209 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 269 transitions. Word has length 143 [2020-09-04 15:34:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:23,210 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 269 transitions. [2020-09-04 15:34:23,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:34:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 269 transitions. [2020-09-04 15:34:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:34:23,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:23,213 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] [2020-09-04 15:34:23,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:34:23,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash -844663911, now seen corresponding path program 1 times [2020-09-04 15:34:23,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:23,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982338833] [2020-09-04 15:34:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:23,217 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,655 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:34:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:34:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:34:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:23,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982338833] [2020-09-04 15:34:23,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:23,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:34:23,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151034050] [2020-09-04 15:34:23,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:34:23,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:34:23,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:34:23,849 INFO L87 Difference]: Start difference. First operand 252 states and 269 transitions. Second operand 10 states. [2020-09-04 15:34:24,401 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:24,752 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:25,041 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:34:25,372 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:25,670 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:25,952 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:26,923 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:29,380 INFO L93 Difference]: Finished difference Result 691 states and 795 transitions. [2020-09-04 15:34:29,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:34:29,384 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:34:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:29,393 INFO L225 Difference]: With dead ends: 691 [2020-09-04 15:34:29,393 INFO L226 Difference]: Without dead ends: 549 [2020-09-04 15:34:29,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:34:29,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-09-04 15:34:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 442. [2020-09-04 15:34:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-09-04 15:34:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 486 transitions. [2020-09-04 15:34:29,537 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 486 transitions. Word has length 156 [2020-09-04 15:34:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:29,538 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 486 transitions. [2020-09-04 15:34:29,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:34:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 486 transitions. [2020-09-04 15:34:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:34:29,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:29,541 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] [2020-09-04 15:34:29,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:34:29,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1137144832, now seen corresponding path program 1 times [2020-09-04 15:34:29,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:29,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539939806] [2020-09-04 15:34:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:29,545 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,081 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:30,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:34:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:34:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:34:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:30,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539939806] [2020-09-04 15:34:30,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:30,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:34:30,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107824620] [2020-09-04 15:34:30,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:34:30,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:30,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:34:30,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:34:30,370 INFO L87 Difference]: Start difference. First operand 442 states and 486 transitions. Second operand 14 states. [2020-09-04 15:34:31,050 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:31,382 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:31,744 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:32,072 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:32,406 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:32,713 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:33,474 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:34,730 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:35,057 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:35,480 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:35,869 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:36,164 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:36,457 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:36,764 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:37,062 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:37,348 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:37,763 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:38,171 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:38,499 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:38,887 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:41,434 INFO L93 Difference]: Finished difference Result 1524 states and 1873 transitions. [2020-09-04 15:34:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 15:34:41,437 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 161 [2020-09-04 15:34:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:41,450 INFO L225 Difference]: With dead ends: 1524 [2020-09-04 15:34:41,450 INFO L226 Difference]: Without dead ends: 1192 [2020-09-04 15:34:41,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2020-09-04 15:34:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-09-04 15:34:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1053. [2020-09-04 15:34:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2020-09-04 15:34:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1211 transitions. [2020-09-04 15:34:41,835 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1211 transitions. Word has length 161 [2020-09-04 15:34:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:41,836 INFO L479 AbstractCegarLoop]: Abstraction has 1053 states and 1211 transitions. [2020-09-04 15:34:41,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:34:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1211 transitions. [2020-09-04 15:34:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:34:41,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:41,840 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] [2020-09-04 15:34:41,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:34:41,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:41,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1039475204, now seen corresponding path program 1 times [2020-09-04 15:34:41,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:41,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538812751] [2020-09-04 15:34:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:41,844 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,224 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:34:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:34:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:34:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:34:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:42,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538812751] [2020-09-04 15:34:42,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:42,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:34:42,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854732845] [2020-09-04 15:34:42,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:34:42,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:42,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:34:42,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:34:42,390 INFO L87 Difference]: Start difference. First operand 1053 states and 1211 transitions. Second operand 6 states. [2020-09-04 15:34:42,924 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:45,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:45,019 INFO L93 Difference]: Finished difference Result 2464 states and 2978 transitions. [2020-09-04 15:34:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 15:34:45,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-09-04 15:34:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:45,030 INFO L225 Difference]: With dead ends: 2464 [2020-09-04 15:34:45,030 INFO L226 Difference]: Without dead ends: 1521 [2020-09-04 15:34:45,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:34:45,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2020-09-04 15:34:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1418. [2020-09-04 15:34:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2020-09-04 15:34:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1642 transitions. [2020-09-04 15:34:45,470 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1642 transitions. Word has length 166 [2020-09-04 15:34:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:45,471 INFO L479 AbstractCegarLoop]: Abstraction has 1418 states and 1642 transitions. [2020-09-04 15:34:45,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:34:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1642 transitions. [2020-09-04 15:34:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-04 15:34:45,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:45,477 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] [2020-09-04 15:34:45,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:34:45,478 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:45,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:45,478 INFO L82 PathProgramCache]: Analyzing trace with hash -39352853, now seen corresponding path program 1 times [2020-09-04 15:34:45,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:45,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770255596] [2020-09-04 15:34:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:45,513 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,874 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:45,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:45,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:34:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:46,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 15:34:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:46,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 15:34:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:46,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-09-04 15:34:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:46,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770255596] [2020-09-04 15:34:46,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:46,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:34:46,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655347298] [2020-09-04 15:34:46,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:34:46,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:46,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:34:46,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:34:46,083 INFO L87 Difference]: Start difference. First operand 1418 states and 1642 transitions. Second operand 11 states. [2020-09-04 15:34:46,763 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:49,092 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:49,404 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:49,748 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:50,091 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:50,395 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:51,307 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:51,650 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:34:51,971 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:34:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:34:52,568 INFO L93 Difference]: Finished difference Result 1602 states and 1908 transitions. [2020-09-04 15:34:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:34:52,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 209 [2020-09-04 15:34:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:34:52,577 INFO L225 Difference]: With dead ends: 1602 [2020-09-04 15:34:52,577 INFO L226 Difference]: Without dead ends: 1599 [2020-09-04 15:34:52,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:34:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2020-09-04 15:34:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1427. [2020-09-04 15:34:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1427 states. [2020-09-04 15:34:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1648 transitions. [2020-09-04 15:34:53,129 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1648 transitions. Word has length 209 [2020-09-04 15:34:53,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:34:53,130 INFO L479 AbstractCegarLoop]: Abstraction has 1427 states and 1648 transitions. [2020-09-04 15:34:53,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:34:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1648 transitions. [2020-09-04 15:34:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-09-04 15:34:53,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:34:53,140 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, 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, 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] [2020-09-04 15:34:53,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:34:53,141 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:34:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:34:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash -797335436, now seen corresponding path program 1 times [2020-09-04 15:34:53,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:34:53,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086511520] [2020-09-04 15:34:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:34:53,165 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:34:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,590 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:34:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:34:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:34:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:34:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:34:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:34:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:34:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:34:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:34:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:34:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:34:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 15:34:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-04 15:34:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 15:34:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:34:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:34:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:34:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:34:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:34:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-09-04 15:34:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:53,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-09-04 15:34:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:34:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:34:54,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086511520] [2020-09-04 15:34:54,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:34:54,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:34:54,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731342871] [2020-09-04 15:34:54,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:34:54,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:34:54,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:34:54,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:34:54,070 INFO L87 Difference]: Start difference. First operand 1427 states and 1648 transitions. Second operand 15 states. [2020-09-04 15:34:54,624 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:55,501 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:34:56,817 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:57,155 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:57,544 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:34:57,946 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:34:58,265 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:34:58,604 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:34:58,934 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:34:59,282 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:34:59,589 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:00,012 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:00,400 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:35:00,732 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:03,296 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:35:03,601 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:35:03,947 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:35:04,276 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:35:04,658 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:04,948 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:35:06,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:35:06,977 INFO L93 Difference]: Finished difference Result 3284 states and 4201 transitions. [2020-09-04 15:35:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-09-04 15:35:06,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 314 [2020-09-04 15:35:06,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:35:06,989 INFO L225 Difference]: With dead ends: 3284 [2020-09-04 15:35:06,989 INFO L226 Difference]: Without dead ends: 1967 [2020-09-04 15:35:06,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=527, Invalid=2229, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 15:35:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-09-04 15:35:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1449. [2020-09-04 15:35:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2020-09-04 15:35:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1663 transitions. [2020-09-04 15:35:07,535 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1663 transitions. Word has length 314 [2020-09-04 15:35:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:35:07,536 INFO L479 AbstractCegarLoop]: Abstraction has 1449 states and 1663 transitions. [2020-09-04 15:35:07,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:35:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1663 transitions. [2020-09-04 15:35:07,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-04 15:35:07,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:35:07,543 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] [2020-09-04 15:35:07,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:35:07,544 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:35:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:35:07,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1895848680, now seen corresponding path program 1 times [2020-09-04 15:35:07,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:35:07,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119284354] [2020-09-04 15:35:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:35:07,562 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:35:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:07,964 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:35:07,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:35:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:35:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:35:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:35:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:35:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:35:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:35:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:35:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:35:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:35:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:35:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:35:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:35:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:35:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:35:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:35:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-09-04 15:35:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 15:35:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-09-04 15:35:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:35:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-09-04 15:35:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 15:35:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:35:08,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119284354] [2020-09-04 15:35:08,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:35:08,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 15:35:08,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855720361] [2020-09-04 15:35:08,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 15:35:08,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:35:08,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 15:35:08,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:35:08,286 INFO L87 Difference]: Start difference. First operand 1449 states and 1663 transitions. Second operand 15 states. [2020-09-04 15:35:08,974 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:35:09,275 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:35:09,570 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:35:09,859 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:10,138 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:35:11,206 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:35:11,499 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:11,811 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:35:12,158 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:12,452 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:35:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:35:14,321 INFO L93 Difference]: Finished difference Result 2743 states and 3293 transitions. [2020-09-04 15:35:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:35:14,322 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 262 [2020-09-04 15:35:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:35:14,331 INFO L225 Difference]: With dead ends: 2743 [2020-09-04 15:35:14,331 INFO L226 Difference]: Without dead ends: 1404 [2020-09-04 15:35:14,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:35:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-09-04 15:35:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1178. [2020-09-04 15:35:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-09-04 15:35:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1344 transitions. [2020-09-04 15:35:14,837 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1344 transitions. Word has length 262 [2020-09-04 15:35:14,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:35:14,838 INFO L479 AbstractCegarLoop]: Abstraction has 1178 states and 1344 transitions. [2020-09-04 15:35:14,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 15:35:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1344 transitions. [2020-09-04 15:35:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-04 15:35:14,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:35:14,842 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] [2020-09-04 15:35:14,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:35:14,843 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:35:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:35:14,843 INFO L82 PathProgramCache]: Analyzing trace with hash -472658643, now seen corresponding path program 1 times [2020-09-04 15:35:14,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:35:14,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365054470] [2020-09-04 15:35:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:35:14,859 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:35:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,204 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:35:15,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:35:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:35:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:35:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:35:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:35:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:35:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:35:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:35:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:35:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:35:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:35:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:35:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:35:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:35:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:35:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:35:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:35:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 15:35:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 15:35:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-09-04 15:35:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:35:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-09-04 15:35:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-09-04 15:35:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:35:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:35:15,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365054470] [2020-09-04 15:35:15,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:35:15,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:35:15,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677278575] [2020-09-04 15:35:15,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:35:15,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:35:15,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:35:15,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:35:15,591 INFO L87 Difference]: Start difference. First operand 1178 states and 1344 transitions. Second operand 14 states. [2020-09-04 15:35:16,158 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:35:16,975 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:35:17,807 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:35:18,113 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:35:18,466 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:35:18,778 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:35:19,073 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:35:19,370 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:35:19,658 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:35:20,041 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:20,393 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:35:20,700 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:35:23,200 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:35:23,520 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:35:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:35:25,354 INFO L93 Difference]: Finished difference Result 3022 states and 3796 transitions. [2020-09-04 15:35:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-04 15:35:25,354 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 267 [2020-09-04 15:35:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:35:25,368 INFO L225 Difference]: With dead ends: 3022 [2020-09-04 15:35:25,368 INFO L226 Difference]: Without dead ends: 2174 [2020-09-04 15:35:25,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=562, Invalid=1508, Unknown=0, NotChecked=0, Total=2070 [2020-09-04 15:35:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2020-09-04 15:35:26,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1541. [2020-09-04 15:35:26,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2020-09-04 15:35:26,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 1786 transitions. [2020-09-04 15:35:26,126 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 1786 transitions. Word has length 267 [2020-09-04 15:35:26,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:35:26,127 INFO L479 AbstractCegarLoop]: Abstraction has 1541 states and 1786 transitions. [2020-09-04 15:35:26,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:35:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 1786 transitions. [2020-09-04 15:35:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-09-04 15:35:26,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:35:26,133 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, 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] [2020-09-04 15:35:26,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:35:26,133 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:35:26,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:35:26,134 INFO L82 PathProgramCache]: Analyzing trace with hash -593865687, now seen corresponding path program 2 times [2020-09-04 15:35:26,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:35:26,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158927652] [2020-09-04 15:35:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:35:26,150 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:35:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:35:26,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:35:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:35:26,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:35:26,915 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:35:26,915 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:35:26,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:35:26,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:35:26 BoogieIcfgContainer [2020-09-04 15:35:26,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:35:26,973 INFO L168 Benchmark]: Toolchain (without parser) took 71103.83 ms. Allocated memory was 139.5 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 101.0 MB in the beginning and 66.0 MB in the end (delta: 35.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2020-09-04 15:35:26,974 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:35:26,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.91 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 170.5 MB in the end (delta: -69.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:35:26,975 INFO L168 Benchmark]: Boogie Preprocessor took 123.40 ms. Allocated memory is still 201.9 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:35:26,976 INFO L168 Benchmark]: RCFGBuilder took 1237.56 ms. Allocated memory was 201.9 MB in the beginning and 236.5 MB in the end (delta: 34.6 MB). Free memory was 166.5 MB in the beginning and 176.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:35:26,976 INFO L168 Benchmark]: TraceAbstraction took 68949.29 ms. Allocated memory was 236.5 MB in the beginning and 1.2 GB in the end (delta: 920.6 MB). Free memory was 176.9 MB in the beginning and 66.0 MB in the end (delta: 110.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-09-04 15:35:26,979 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 139.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.91 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 170.5 MB in the end (delta: -69.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.40 ms. Allocated memory is still 201.9 MB. Free memory was 170.5 MB in the beginning and 166.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1237.56 ms. Allocated memory was 201.9 MB in the beginning and 236.5 MB in the end (delta: 34.6 MB). Free memory was 166.5 MB in the beginning and 176.9 MB in the end (delta: -10.4 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 68949.29 ms. Allocated memory was 236.5 MB in the beginning and 1.2 GB in the end (delta: 920.6 MB). Free memory was 176.9 MB in the beginning and 66.0 MB in the end (delta: 110.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 752]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L757] int cleanupTimeShifts = 4; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; [L830] int retValue_acc ; [L831] int tmp ; [L835] FCALL select_helpers() [L836] FCALL select_features() [L837] CALL, EXPR valid_product() [L464] int retValue_acc ; [L467] retValue_acc = 1 [L468] return (retValue_acc); [L837] RET, EXPR valid_product() [L837] tmp = valid_product() [L839] COND TRUE \read(tmp) [L841] FCALL setup() [L842] CALL runTest() [L824] CALL test() [L480] int splverifierCounter ; [L481] int tmp ; [L482] int tmp___0 ; [L483] int tmp___1 ; [L484] int tmp___2 ; [L487] splverifierCounter = 0 [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND TRUE \read(tmp) [L501] CALL waterRise() [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 [L501] RET waterRise() [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L706] int retValue_acc ; [L707] int tmp ; [L708] int tmp___0 ; [L712] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); [L712] RET, EXPR isHighWaterSensorDry() [L712] tmp = isHighWaterSensorDry() [L714] COND FALSE !(\read(tmp)) [L717] tmp___0 = 1 [L719] retValue_acc = tmp___0 [L720] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L625] int tmp ; [L629] CALL, EXPR isMethaneAlarm() [L650] int retValue_acc ; [L654] CALL, EXPR isMethaneLevelCritical() [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); [L654] RET, EXPR isMethaneLevelCritical() [L654] retValue_acc = isMethaneLevelCritical() [L656] return (retValue_acc); [L629] RET, EXPR isMethaneAlarm() [L629] tmp = isMethaneAlarm() [L631] COND FALSE !(\read(tmp)) [L635] CALL activatePump__wrappee__highWaterSensor() [L619] pumpRunning = 1 [L635] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L536] RET timeShift() [L489] COND TRUE 1 [L491] COND TRUE splverifierCounter < 4 [L497] tmp = __VERIFIER_nondet_int() [L499] COND FALSE !(\read(tmp)) [L507] tmp___0 = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp___0)) [L517] tmp___2 = __VERIFIER_nondet_int() [L519] COND TRUE \read(tmp___2) [L521] CALL startSystem() [L743] systemActive = 1 [L521] RET startSystem() [L536] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L859] COND TRUE waterLevel > 0 [L860] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L924] int retValue_acc ; [L927] retValue_acc = waterLevel [L928] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L661] int retValue_acc ; [L664] retValue_acc = pumpRunning [L665] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L752] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 68.8s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 57.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2354 SDtfs, 6135 SDslu, 6131 SDs, 0 SdLazy, 13726 SolverSat, 2183 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 523 GetRequests, 309 SyntacticMatches, 6 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1541occurred 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: 3.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 1979 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...