/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_spec2_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:12:05,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:12:05,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:12:05,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:12:05,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:12:05,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:12:05,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:12:05,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:12:05,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:12:05,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:12:05,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:12:05,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:12:05,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:12:05,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:12:05,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:12:05,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:12:05,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:12:05,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:12:05,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:12:05,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:12:05,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:12:05,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:12:05,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:12:05,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:12:05,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:12:05,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:12:05,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:12:05,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:12:05,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:12:05,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:12:05,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:12:05,293 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:12:05,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:12:05,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:12:05,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:12:05,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:12:05,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:12:05,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:12:05,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:12:05,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:12:05,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:12:05,300 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 15:12:05,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:12:05,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:12:05,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:12:05,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:12:05,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:12:05,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:12:05,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:12:05,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:12:05,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:12:05,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:12:05,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:12:05,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:12:05,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:12:05,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:12:05,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:12:05,314 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:12:05,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:12:05,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:12:05,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:12:05,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:12:05,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:12:05,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:12:05,316 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:12:05,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:12:05,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:12:05,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:12:05,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:12:05,778 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:12:05,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-09-04 15:12:05,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24dd26102/2a76ea4489b24f7d9f4ff3512c9f7969/FLAGe349ec0c9 [2020-09-04 15:12:06,463 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:12:06,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product41.cil.c [2020-09-04 15:12:06,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24dd26102/2a76ea4489b24f7d9f4ff3512c9f7969/FLAGe349ec0c9 [2020-09-04 15:12:06,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24dd26102/2a76ea4489b24f7d9f4ff3512c9f7969 [2020-09-04 15:12:06,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:12:06,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:12:06,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:12:06,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:12:06,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:12:06,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:12:06" (1/1) ... [2020-09-04 15:12:06,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fec7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:06, skipping insertion in model container [2020-09-04 15:12:06,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:12:06" (1/1) ... [2020-09-04 15:12:06,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:12:06,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:12:07,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:12:07,295 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:12:07,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:12:07,433 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:12:07,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07 WrapperNode [2020-09-04 15:12:07,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:12:07,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:12:07,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:12:07,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:12:07,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (1/1) ... [2020-09-04 15:12:07,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (1/1) ... [2020-09-04 15:12:07,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (1/1) ... [2020-09-04 15:12:07,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (1/1) ... [2020-09-04 15:12:07,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (1/1) ... [2020-09-04 15:12:07,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (1/1) ... [2020-09-04 15:12:07,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (1/1) ... [2020-09-04 15:12:07,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:12:07,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:12:07,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:12:07,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:12:07,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (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 15:12:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:12:07,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:12:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:12:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:12:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:12:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:12:07,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:12:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:12:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:12:07,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:12:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:12:07,645 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:12:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:12:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:12:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:12:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:12:07,646 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:12:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:12:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:12:07,647 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:12:07,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:12:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:12:07,651 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:12:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:12:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:12:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:12:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:12:07,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:12:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:12:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:12:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:12:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:12:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:12:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:12:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:12:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:12:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:12:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:12:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:12:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:12:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:12:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:12:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:12:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:12:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:12:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:12:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:12:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:12:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:12:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:12:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:12:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:12:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:12:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:12:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:12:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:12:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:12:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:12:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:12:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:12:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:12:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:12:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:12:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:12:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:12:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:12:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:12:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:12:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:12:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:12:07,659 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:12:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:12:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:12:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:12:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:12:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:12:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:12:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:12:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:12:07,661 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:12:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:12:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:12:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:12:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:12:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:12:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:12:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:12:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:12:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:12:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:12:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:12:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:12:08,763 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:12:08,763 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:12:08,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:12:08 BoogieIcfgContainer [2020-09-04 15:12:08,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:12:08,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:12:08,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:12:08,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:12:08,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:12:06" (1/3) ... [2020-09-04 15:12:08,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d434e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:12:08, skipping insertion in model container [2020-09-04 15:12:08,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:07" (2/3) ... [2020-09-04 15:12:08,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d434e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:12:08, skipping insertion in model container [2020-09-04 15:12:08,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:12:08" (3/3) ... [2020-09-04 15:12:08,780 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product41.cil.c [2020-09-04 15:12:08,792 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:12:08,803 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:12:08,826 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:12:08,855 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:12:08,856 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:12:08,856 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:12:08,856 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:12:08,856 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:12:08,856 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:12:08,856 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:12:08,857 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:12:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-09-04 15:12:08,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-04 15:12:08,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:08,907 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] [2020-09-04 15:12:08,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:08,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:08,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1518186743, now seen corresponding path program 1 times [2020-09-04 15:12:08,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:08,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872194136] [2020-09-04 15:12:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:09,021 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,748 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:09,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:12:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:09,976 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 15:12:09,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872194136] [2020-09-04 15:12:09,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:09,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:12:09,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661745299] [2020-09-04 15:12:09,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:12:09,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:10,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:12:10,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:12:10,013 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 4 states. [2020-09-04 15:12:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:11,322 INFO L93 Difference]: Finished difference Result 468 states and 552 transitions. [2020-09-04 15:12:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 15:12:11,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-04 15:12:11,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:11,345 INFO L225 Difference]: With dead ends: 468 [2020-09-04 15:12:11,345 INFO L226 Difference]: Without dead ends: 300 [2020-09-04 15:12:11,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:12:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-04 15:12:11,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 253. [2020-09-04 15:12:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-09-04 15:12:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 274 transitions. [2020-09-04 15:12:11,496 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 274 transitions. Word has length 148 [2020-09-04 15:12:11,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:11,497 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 274 transitions. [2020-09-04 15:12:11,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:12:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 274 transitions. [2020-09-04 15:12:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 15:12:11,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:11,502 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] [2020-09-04 15:12:11,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:12:11,503 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:11,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1991313851, now seen corresponding path program 1 times [2020-09-04 15:12:11,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:11,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073577481] [2020-09-04 15:12:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:11,507 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:11,923 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:11,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:12:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:12:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:12,092 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 15:12:12,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073577481] [2020-09-04 15:12:12,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:12,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 15:12:12,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012833507] [2020-09-04 15:12:12,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 15:12:12,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:12,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 15:12:12,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:12:12,097 INFO L87 Difference]: Start difference. First operand 253 states and 274 transitions. Second operand 5 states. [2020-09-04 15:12:12,762 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:13,724 INFO L93 Difference]: Finished difference Result 397 states and 447 transitions. [2020-09-04 15:12:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 15:12:13,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-04 15:12:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:13,735 INFO L225 Difference]: With dead ends: 397 [2020-09-04 15:12:13,735 INFO L226 Difference]: Without dead ends: 289 [2020-09-04 15:12:13,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:12:13,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-04 15:12:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 243. [2020-09-04 15:12:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-04 15:12:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 261 transitions. [2020-09-04 15:12:13,832 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 261 transitions. Word has length 149 [2020-09-04 15:12:13,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:13,833 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 261 transitions. [2020-09-04 15:12:13,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 15:12:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 261 transitions. [2020-09-04 15:12:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-04 15:12:13,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:13,837 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] [2020-09-04 15:12:13,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:12:13,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash 263225803, now seen corresponding path program 1 times [2020-09-04 15:12:13,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:13,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206664097] [2020-09-04 15:12:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:13,842 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,315 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:12:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:12:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:14,547 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 15:12:14,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206664097] [2020-09-04 15:12:14,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:14,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:12:14,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143843857] [2020-09-04 15:12:14,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:12:14,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:14,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:12:14,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:12:14,551 INFO L87 Difference]: Start difference. First operand 243 states and 261 transitions. Second operand 10 states. [2020-09-04 15:12:15,083 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:15,452 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:15,770 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:16,056 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:16,414 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:16,704 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:18,276 INFO L93 Difference]: Finished difference Result 417 states and 473 transitions. [2020-09-04 15:12:18,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:12:18,276 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-09-04 15:12:18,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:18,281 INFO L225 Difference]: With dead ends: 417 [2020-09-04 15:12:18,281 INFO L226 Difference]: Without dead ends: 289 [2020-09-04 15:12:18,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:12:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-04 15:12:18,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 243. [2020-09-04 15:12:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-09-04 15:12:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 260 transitions. [2020-09-04 15:12:18,355 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 260 transitions. Word has length 158 [2020-09-04 15:12:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:18,356 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 260 transitions. [2020-09-04 15:12:18,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:12:18,356 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 260 transitions. [2020-09-04 15:12:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:12:18,359 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:18,359 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 15:12:18,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:12:18,359 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1554497374, now seen corresponding path program 1 times [2020-09-04 15:12:18,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:18,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078275775] [2020-09-04 15:12:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:18,363 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,739 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:18,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:12:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-04 15:12:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 15:12:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,893 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 15:12:18,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078275775] [2020-09-04 15:12:18,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:18,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:12:18,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272259536] [2020-09-04 15:12:18,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:12:18,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:18,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:12:18,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:12:18,897 INFO L87 Difference]: Start difference. First operand 243 states and 260 transitions. Second operand 7 states. [2020-09-04 15:12:19,444 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:21,050 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:21,779 INFO L93 Difference]: Finished difference Result 547 states and 628 transitions. [2020-09-04 15:12:21,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 15:12:21,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-04 15:12:21,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:21,785 INFO L225 Difference]: With dead ends: 547 [2020-09-04 15:12:21,786 INFO L226 Difference]: Without dead ends: 419 [2020-09-04 15:12:21,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:12:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-09-04 15:12:21,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 348. [2020-09-04 15:12:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-09-04 15:12:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 377 transitions. [2020-09-04 15:12:21,920 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 377 transitions. Word has length 166 [2020-09-04 15:12:21,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:21,921 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 377 transitions. [2020-09-04 15:12:21,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:12:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 377 transitions. [2020-09-04 15:12:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 15:12:21,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:21,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:21,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:12:21,925 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:21,926 INFO L82 PathProgramCache]: Analyzing trace with hash 590655546, now seen corresponding path program 1 times [2020-09-04 15:12:21,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:21,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447610115] [2020-09-04 15:12:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:21,929 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,296 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:12:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-09-04 15:12:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-04 15:12:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:22,587 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 15:12:22,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447610115] [2020-09-04 15:12:22,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:22,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:12:22,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982959603] [2020-09-04 15:12:22,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:12:22,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:12:22,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:12:22,593 INFO L87 Difference]: Start difference. First operand 348 states and 377 transitions. Second operand 10 states. [2020-09-04 15:12:23,053 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:24,474 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:24,798 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:25,169 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:25,473 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:26,091 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:26,393 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:26,719 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:27,065 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:27,813 INFO L93 Difference]: Finished difference Result 878 states and 1025 transitions. [2020-09-04 15:12:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:12:27,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-09-04 15:12:27,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:27,819 INFO L225 Difference]: With dead ends: 878 [2020-09-04 15:12:27,820 INFO L226 Difference]: Without dead ends: 645 [2020-09-04 15:12:27,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:12:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2020-09-04 15:12:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 535. [2020-09-04 15:12:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2020-09-04 15:12:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 585 transitions. [2020-09-04 15:12:27,993 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 585 transitions. Word has length 190 [2020-09-04 15:12:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:27,994 INFO L479 AbstractCegarLoop]: Abstraction has 535 states and 585 transitions. [2020-09-04 15:12:27,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:12:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 585 transitions. [2020-09-04 15:12:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 15:12:27,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:27,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:27,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:12:27,998 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:27,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2059893013, now seen corresponding path program 1 times [2020-09-04 15:12:27,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:27,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297050276] [2020-09-04 15:12:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:28,001 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,417 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:28,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 15:12:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 15:12:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:28,607 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 15:12:28,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297050276] [2020-09-04 15:12:28,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:28,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:12:28,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16516953] [2020-09-04 15:12:28,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:12:28,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:28,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:12:28,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:12:28,609 INFO L87 Difference]: Start difference. First operand 535 states and 585 transitions. Second operand 11 states. [2020-09-04 15:12:29,181 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:30,833 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:31,119 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:31,491 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:32,545 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:32,860 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:33,199 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:33,517 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:33,816 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:34,191 INFO L93 Difference]: Finished difference Result 1126 states and 1301 transitions. [2020-09-04 15:12:34,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 15:12:34,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 195 [2020-09-04 15:12:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:34,200 INFO L225 Difference]: With dead ends: 1126 [2020-09-04 15:12:34,200 INFO L226 Difference]: Without dead ends: 706 [2020-09-04 15:12:34,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2020-09-04 15:12:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-04 15:12:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 533. [2020-09-04 15:12:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-09-04 15:12:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 581 transitions. [2020-09-04 15:12:34,353 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 581 transitions. Word has length 195 [2020-09-04 15:12:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:34,353 INFO L479 AbstractCegarLoop]: Abstraction has 533 states and 581 transitions. [2020-09-04 15:12:34,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:34,354 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 581 transitions. [2020-09-04 15:12:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 15:12:34,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:34,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:34,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:12:34,358 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash -81749345, now seen corresponding path program 1 times [2020-09-04 15:12:34,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:34,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581351430] [2020-09-04 15:12:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:34,362 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,660 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-04 15:12:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:34,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 15:12:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:35,021 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 15:12:35,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581351430] [2020-09-04 15:12:35,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:35,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:12:35,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744140134] [2020-09-04 15:12:35,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:12:35,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:35,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:12:35,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:12:35,025 INFO L87 Difference]: Start difference. First operand 533 states and 581 transitions. Second operand 11 states. [2020-09-04 15:12:36,277 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:36,582 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:36,902 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-04 15:12:37,204 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:37,521 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:37,805 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:39,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:39,097 INFO L93 Difference]: Finished difference Result 1138 states and 1334 transitions. [2020-09-04 15:12:39,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:12:39,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 218 [2020-09-04 15:12:39,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:39,103 INFO L225 Difference]: With dead ends: 1138 [2020-09-04 15:12:39,103 INFO L226 Difference]: Without dead ends: 720 [2020-09-04 15:12:39,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:12:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2020-09-04 15:12:39,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 549. [2020-09-04 15:12:39,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-09-04 15:12:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 597 transitions. [2020-09-04 15:12:39,256 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 597 transitions. Word has length 218 [2020-09-04 15:12:39,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:39,256 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 597 transitions. [2020-09-04 15:12:39,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 597 transitions. [2020-09-04 15:12:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 15:12:39,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:39,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:39,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:12:39,261 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:39,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:39,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1358050047, now seen corresponding path program 1 times [2020-09-04 15:12:39,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:39,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312519405] [2020-09-04 15:12:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:39,264 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,707 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-04 15:12:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 15:12:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:40,053 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 15:12:40,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312519405] [2020-09-04 15:12:40,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:40,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:12:40,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349463779] [2020-09-04 15:12:40,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:12:40,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:40,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:12:40,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:12:40,056 INFO L87 Difference]: Start difference. First operand 549 states and 597 transitions. Second operand 14 states. [2020-09-04 15:12:40,860 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:41,100 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:41,351 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:41,649 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:41,930 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:42,872 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:43,182 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:43,497 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:43,800 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:44,091 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:45,680 INFO L93 Difference]: Finished difference Result 1172 states and 1370 transitions. [2020-09-04 15:12:45,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:12:45,681 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-09-04 15:12:45,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:45,685 INFO L225 Difference]: With dead ends: 1172 [2020-09-04 15:12:45,685 INFO L226 Difference]: Without dead ends: 738 [2020-09-04 15:12:45,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:12:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2020-09-04 15:12:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 561. [2020-09-04 15:12:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-09-04 15:12:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 609 transitions. [2020-09-04 15:12:45,836 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 609 transitions. Word has length 218 [2020-09-04 15:12:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:45,836 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 609 transitions. [2020-09-04 15:12:45,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:12:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 609 transitions. [2020-09-04 15:12:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 15:12:45,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:45,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:45,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:12:45,840 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash 737578300, now seen corresponding path program 1 times [2020-09-04 15:12:45,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:45,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83753528] [2020-09-04 15:12:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:45,843 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,205 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-04 15:12:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 15:12:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:46,431 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 15:12:46,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83753528] [2020-09-04 15:12:46,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:46,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:12:46,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125432603] [2020-09-04 15:12:46,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:12:46,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:46,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:12:46,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:12:46,434 INFO L87 Difference]: Start difference. First operand 561 states and 609 transitions. Second operand 8 states. [2020-09-04 15:12:46,949 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:47,611 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:50,248 INFO L93 Difference]: Finished difference Result 1633 states and 1951 transitions. [2020-09-04 15:12:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:12:50,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-09-04 15:12:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:50,255 INFO L225 Difference]: With dead ends: 1633 [2020-09-04 15:12:50,256 INFO L226 Difference]: Without dead ends: 1187 [2020-09-04 15:12:50,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:12:50,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-09-04 15:12:50,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 955. [2020-09-04 15:12:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 955 states. [2020-09-04 15:12:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1065 transitions. [2020-09-04 15:12:50,617 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1065 transitions. Word has length 218 [2020-09-04 15:12:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:50,618 INFO L479 AbstractCegarLoop]: Abstraction has 955 states and 1065 transitions. [2020-09-04 15:12:50,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:12:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1065 transitions. [2020-09-04 15:12:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-04 15:12:50,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:50,620 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:50,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:12:50,620 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1828552056, now seen corresponding path program 1 times [2020-09-04 15:12:50,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:50,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285767421] [2020-09-04 15:12:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:50,624 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,997 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:12:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:12:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:12:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 15:12:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 15:12:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:51,473 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 15:12:51,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285767421] [2020-09-04 15:12:51,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:51,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-04 15:12:51,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721904925] [2020-09-04 15:12:51,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 15:12:51,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:51,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 15:12:51,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:12:51,475 INFO L87 Difference]: Start difference. First operand 955 states and 1065 transitions. Second operand 21 states. [2020-09-04 15:12:52,092 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:52,560 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:52,882 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:12:53,199 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:53,512 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:53,812 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:54,862 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:56,269 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:56,616 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:12:57,030 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:57,374 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:57,707 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:12:58,032 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:12:58,357 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:58,699 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:12:59,060 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:59,494 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:12:59,864 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:00,247 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:00,943 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-04 15:13:01,710 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 193 [2020-09-04 15:13:02,368 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-04 15:13:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:04,670 INFO L93 Difference]: Finished difference Result 1979 states and 2292 transitions. [2020-09-04 15:13:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 15:13:04,671 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 223 [2020-09-04 15:13:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:04,677 INFO L225 Difference]: With dead ends: 1979 [2020-09-04 15:13:04,678 INFO L226 Difference]: Without dead ends: 1139 [2020-09-04 15:13:04,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=726, Invalid=3056, Unknown=0, NotChecked=0, Total=3782 [2020-09-04 15:13:04,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-09-04 15:13:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 918. [2020-09-04 15:13:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2020-09-04 15:13:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1012 transitions. [2020-09-04 15:13:04,976 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1012 transitions. Word has length 223 [2020-09-04 15:13:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:04,977 INFO L479 AbstractCegarLoop]: Abstraction has 918 states and 1012 transitions. [2020-09-04 15:13:04,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 15:13:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1012 transitions. [2020-09-04 15:13:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-04 15:13:04,980 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:04,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:04,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:13:04,981 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:04,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:04,981 INFO L82 PathProgramCache]: Analyzing trace with hash -77807389, now seen corresponding path program 1 times [2020-09-04 15:13:04,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:04,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123910637] [2020-09-04 15:13:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:05,020 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,371 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:13:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:13:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:13:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:13:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:13:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:13:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:13:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:13:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:13:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:13:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:13:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:13:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:13:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 15:13:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-09-04 15:13:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-09-04 15:13:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 15:13:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 15:13:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:05,605 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 15:13:05,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123910637] [2020-09-04 15:13:05,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:13:05,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:13:05,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441291195] [2020-09-04 15:13:05,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:13:05,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:13:05,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:13:05,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:13:05,712 INFO L87 Difference]: Start difference. First operand 918 states and 1012 transitions. Second operand 9 states. [2020-09-04 15:13:06,224 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:08,797 INFO L93 Difference]: Finished difference Result 1725 states and 2021 transitions. [2020-09-04 15:13:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:13:08,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 271 [2020-09-04 15:13:08,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:08,807 INFO L225 Difference]: With dead ends: 1725 [2020-09-04 15:13:08,807 INFO L226 Difference]: Without dead ends: 1722 [2020-09-04 15:13:08,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:13:08,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-09-04 15:13:09,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1393. [2020-09-04 15:13:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-09-04 15:13:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1545 transitions. [2020-09-04 15:13:09,272 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1545 transitions. Word has length 271 [2020-09-04 15:13:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:09,273 INFO L479 AbstractCegarLoop]: Abstraction has 1393 states and 1545 transitions. [2020-09-04 15:13:09,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:13:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1545 transitions. [2020-09-04 15:13:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-09-04 15:13:09,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:09,278 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:09,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 15:13:09,278 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:09,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1106251278, now seen corresponding path program 1 times [2020-09-04 15:13:09,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:09,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530166285] [2020-09-04 15:13:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:09,292 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,639 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:13:09,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:13:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:13:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:13:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:13:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:13:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:13:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:13:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:13:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:13:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:13:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:13:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:13:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 15:13:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-09-04 15:13:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 15:13:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 15:13:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 15:13:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 15:13:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 15:13:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 15:13:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:09,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 15:13:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:10,054 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 15:13:10,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530166285] [2020-09-04 15:13:10,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:13:10,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 15:13:10,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760900691] [2020-09-04 15:13:10,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 15:13:10,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:13:10,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 15:13:10,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-04 15:13:10,057 INFO L87 Difference]: Start difference. First operand 1393 states and 1545 transitions. Second operand 12 states. [2020-09-04 15:13:10,634 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:11,411 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:14,160 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:15,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:15,636 INFO L93 Difference]: Finished difference Result 3724 states and 4371 transitions. [2020-09-04 15:13:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 15:13:15,636 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 329 [2020-09-04 15:13:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:15,650 INFO L225 Difference]: With dead ends: 3724 [2020-09-04 15:13:15,650 INFO L226 Difference]: Without dead ends: 2619 [2020-09-04 15:13:15,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 15:13:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2020-09-04 15:13:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2051. [2020-09-04 15:13:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2020-09-04 15:13:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2277 transitions. [2020-09-04 15:13:16,672 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2277 transitions. Word has length 329 [2020-09-04 15:13:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:16,673 INFO L479 AbstractCegarLoop]: Abstraction has 2051 states and 2277 transitions. [2020-09-04 15:13:16,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 15:13:16,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2277 transitions. [2020-09-04 15:13:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-09-04 15:13:16,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:16,678 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:16,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 15:13:16,678 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:16,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1581259822, now seen corresponding path program 1 times [2020-09-04 15:13:16,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:16,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746314076] [2020-09-04 15:13:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:16,693 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:13:16,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:13:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:13:16,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:13:17,138 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:13:17,138 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:13:17,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 15:13:17,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:13:17 BoogieIcfgContainer [2020-09-04 15:13:17,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:13:17,176 INFO L168 Benchmark]: Toolchain (without parser) took 70407.57 ms. Allocated memory was 138.9 MB in the beginning and 1.1 GB in the end (delta: 963.6 MB). Free memory was 100.6 MB in the beginning and 390.5 MB in the end (delta: -289.9 MB). Peak memory consumption was 673.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:17,177 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:13:17,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.48 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 172.1 MB in the end (delta: -71.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:17,178 INFO L168 Benchmark]: Boogie Preprocessor took 117.81 ms. Allocated memory is still 202.9 MB. Free memory was 172.1 MB in the beginning and 167.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:17,179 INFO L168 Benchmark]: RCFGBuilder took 1217.80 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.4 MB in the beginning and 177.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:17,179 INFO L168 Benchmark]: TraceAbstraction took 68402.55 ms. Allocated memory was 235.9 MB in the beginning and 1.1 GB in the end (delta: 866.6 MB). Free memory was 177.7 MB in the beginning and 390.5 MB in the end (delta: -212.8 MB). Peak memory consumption was 653.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:17,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.48 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 172.1 MB in the end (delta: -71.7 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.81 ms. Allocated memory is still 202.9 MB. Free memory was 172.1 MB in the beginning and 167.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1217.80 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 167.4 MB in the beginning and 177.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 68402.55 ms. Allocated memory was 235.9 MB in the beginning and 1.1 GB in the end (delta: 866.6 MB). Free memory was 177.7 MB in the beginning and 390.5 MB in the end (delta: -212.8 MB). Peak memory consumption was 653.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 830]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L43] int methAndRunningLastTime ; [L251] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L455] int pumpRunning = 0; [L456] int systemActive = 1; [L628] int waterLevel = 1; [L629] int methaneLevelCritical = 0; [L835] int cleanupTimeShifts = 4; [L909] int retValue_acc ; [L910] int tmp ; [L914] FCALL select_helpers() [L915] FCALL select_features() [L916] CALL, EXPR valid_product() [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); [L916] RET, EXPR valid_product() [L916] tmp = valid_product() [L918] COND TRUE \read(tmp) [L920] FCALL setup() [L921] CALL runTest() [L902] CALL __utac_acc__Specification2_spec__1() [L48] methAndRunningLastTime = 0 [L902] RET __utac_acc__Specification2_spec__1() [L903] CALL test() [L724] int splverifierCounter ; [L725] int tmp ; [L726] int tmp___0 ; [L727] int tmp___1 ; [L728] int tmp___2 ; [L731] splverifierCounter = 0 [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND TRUE \read(tmp) [L745] CALL waterRise() [L646] COND TRUE waterLevel < 2 [L647] waterLevel = waterLevel + 1 [L745] RET waterRise() [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND FALSE !(\read(pumpRunning)) [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND TRUE ! pumpRunning [L496] CALL, EXPR isHighWaterLevel() [L606] int retValue_acc ; [L607] int tmp ; [L608] int tmp___0 ; [L612] CALL, EXPR isHighWaterSensorDry() [L708] int retValue_acc ; [L711] COND FALSE !(waterLevel < 2) [L715] retValue_acc = 0 [L716] return (retValue_acc); [L612] RET, EXPR isHighWaterSensorDry() [L612] tmp = isHighWaterSensorDry() [L614] COND FALSE !(\read(tmp)) [L617] tmp___0 = 1 [L619] retValue_acc = tmp___0 [L620] return (retValue_acc); [L496] RET, EXPR isHighWaterLevel() [L496] tmp = isHighWaterLevel() [L498] COND TRUE \read(tmp) [L500] CALL activatePump() [L525] int tmp ; [L529] CALL, EXPR isMethaneAlarm() [L550] int retValue_acc ; [L554] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L554] RET, EXPR isMethaneLevelCritical() [L554] retValue_acc = isMethaneLevelCritical() [L556] return (retValue_acc); [L529] RET, EXPR isMethaneAlarm() [L529] tmp = isMethaneAlarm() [L531] COND FALSE !(\read(tmp)) [L535] CALL activatePump__wrappee__highWaterSensor() [L519] pumpRunning = 1 [L535] RET activatePump__wrappee__highWaterSensor() [L500] RET activatePump() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND FALSE !(\read(tmp)) [L76] methAndRunningLastTime = 0 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND TRUE \read(tmp___0) [L755] CALL changeMethaneLevel() [L658] COND FALSE !(\read(methaneLevelCritical)) [L661] methaneLevelCritical = 1 [L755] RET changeMethaneLevel() [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND FALSE !(\read(methAndRunningLastTime)) [L70] methAndRunningLastTime = 1 [L477] RET __utac_acc__Specification2_spec__2() [L776] RET timeShift() [L733] COND TRUE 1 [L735] COND TRUE splverifierCounter < 4 [L741] tmp = __VERIFIER_nondet_int() [L743] COND FALSE !(\read(tmp)) [L751] tmp___0 = __VERIFIER_nondet_int() [L753] COND FALSE !(\read(tmp___0)) [L761] tmp___2 = __VERIFIER_nondet_int() [L763] COND TRUE \read(tmp___2) [L776] CALL timeShift() [L462] COND TRUE \read(pumpRunning) [L464] CALL lowerWaterLevel() [L634] COND TRUE waterLevel > 0 [L635] waterLevel = waterLevel - 1 [L464] RET lowerWaterLevel() [L469] COND TRUE \read(systemActive) [L471] CALL processEnvironment() [L491] int tmp ; [L494] COND FALSE !(! pumpRunning) [L509] FCALL processEnvironment__wrappee__base() [L471] RET processEnvironment() [L477] CALL __utac_acc__Specification2_spec__2() [L53] int tmp ; [L54] int tmp___0 ; [L58] CALL, EXPR isMethaneLevelCritical() [L667] int retValue_acc ; [L670] retValue_acc = methaneLevelCritical [L671] return (retValue_acc); [L58] RET, EXPR isMethaneLevelCritical() [L58] tmp = isMethaneLevelCritical() [L60] COND TRUE \read(tmp) [L62] CALL, EXPR isPumpRunning() [L561] int retValue_acc ; [L564] retValue_acc = pumpRunning [L565] return (retValue_acc); [L62] RET, EXPR isPumpRunning() [L62] tmp___0 = isPumpRunning() [L64] COND TRUE \read(tmp___0) [L65] COND TRUE \read(methAndRunningLastTime) [L67] CALL __automaton_fail() [L830] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 624 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 68.2s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 55.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3090 SDtfs, 10236 SDslu, 6861 SDs, 0 SdLazy, 13260 SolverSat, 2894 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 715 GetRequests, 434 SyntacticMatches, 10 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 26.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2051occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 2191 StatesRemovedByMinimization, 12 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...