/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_spec3_product23.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:23:30,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:23:30,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:23:30,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:23:30,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:23:30,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:23:30,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:23:30,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:23:30,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:23:30,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:23:30,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:23:30,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:23:30,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:23:30,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:23:30,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:23:30,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:23:30,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:23:30,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:23:30,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:23:30,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:23:30,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:23:30,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:23:30,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:23:30,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:23:30,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:23:30,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:23:30,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:23:30,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:23:30,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:23:30,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:23:30,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:23:30,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:23:30,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:23:30,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:23:30,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:23:30,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:23:30,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:23:30,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:23:30,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:23:30,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:23:30,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:23:30,410 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 15:23:30,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:23:30,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:23:30,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:23:30,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:23:30,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:23:30,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:23:30,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:23:30,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:23:30,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:23:30,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:23:30,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:23:30,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:23:30,437 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:23:30,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:23:30,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:23:30,438 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:23:30,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:23:30,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:23:30,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:23:30,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:23:30,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:23:30,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:23:30,439 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:23:30,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:23:30,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:23:30,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:23:30,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:23:30,885 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:23:30,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-09-04 15:23:30,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/590a6b1a4/c0275208456b4e209fbb84637f84cc86/FLAG47679cf1d [2020-09-04 15:23:31,494 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:23:31,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product23.cil.c [2020-09-04 15:23:31,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/590a6b1a4/c0275208456b4e209fbb84637f84cc86/FLAG47679cf1d [2020-09-04 15:23:31,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/590a6b1a4/c0275208456b4e209fbb84637f84cc86 [2020-09-04 15:23:31,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:23:31,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:23:31,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:31,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:23:31,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:23:31,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d6e00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:31, skipping insertion in model container [2020-09-04 15:23:31,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:23:31" (1/1) ... [2020-09-04 15:23:31,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:23:31,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:23:32,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:32,547 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:23:32,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:23:32,659 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:23:32,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32 WrapperNode [2020-09-04 15:23:32,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:23:32,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:23:32,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:23:32,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:23:32,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (1/1) ... [2020-09-04 15:23:32,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (1/1) ... [2020-09-04 15:23:32,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (1/1) ... [2020-09-04 15:23:32,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (1/1) ... [2020-09-04 15:23:32,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (1/1) ... [2020-09-04 15:23:32,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (1/1) ... [2020-09-04 15:23:32,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (1/1) ... [2020-09-04 15:23:32,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:23:32,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:23:32,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:23:32,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:23:32,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (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 15:23:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:23:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:23:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:23:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:23:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:23:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:23:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:23:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:23:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:23:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:23:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:23:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:23:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:23:32,834 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:23:32,835 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:23:32,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:23:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:23:32,836 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:23:32,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:23:32,837 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:23:32,839 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:23:32,840 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:23:32,840 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:23:32,840 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:23:32,840 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:23:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:23:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:23:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:32,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:32,842 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:23:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:23:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:23:32,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:23:32,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:23:32,844 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:23:32,844 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:23:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:23:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:23:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:23:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:23:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:23:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:23:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:23:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:23:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:23:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:23:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:23:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:23:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:23:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:23:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:23:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:23:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:23:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:23:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:23:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:23:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:23:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:23:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 15:23:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:23:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:23:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:23:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:23:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:23:32,849 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:23:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:23:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:23:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:23:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:23:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:23:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:23:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:23:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:23:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:23:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:23:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:23:32,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:23:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:23:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:23:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:23:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:23:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:23:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:23:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:23:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:23:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:23:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:23:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:23:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:23:33,994 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:23:33,995 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:23:34,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:34 BoogieIcfgContainer [2020-09-04 15:23:34,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:23:34,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:23:34,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:23:34,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:23:34,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:23:31" (1/3) ... [2020-09-04 15:23:34,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e97d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:34, skipping insertion in model container [2020-09-04 15:23:34,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:23:32" (2/3) ... [2020-09-04 15:23:34,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e97d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:23:34, skipping insertion in model container [2020-09-04 15:23:34,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:23:34" (3/3) ... [2020-09-04 15:23:34,012 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product23.cil.c [2020-09-04 15:23:34,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:23:34,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:23:34,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:23:34,086 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:23:34,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:23:34,086 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:23:34,086 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:23:34,086 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:23:34,087 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:23:34,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:23:34,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:23:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2020-09-04 15:23:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:23:34,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:34,136 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] [2020-09-04 15:23:34,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:34,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:34,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2023786864, now seen corresponding path program 1 times [2020-09-04 15:23:34,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:34,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30107213] [2020-09-04 15:23:34,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:34,226 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:34,928 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:23:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:35,157 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 15:23:35,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30107213] [2020-09-04 15:23:35,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:35,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:23:35,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055535467] [2020-09-04 15:23:35,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:23:35,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:35,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:23:35,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:23:35,208 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2020-09-04 15:23:36,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:36,652 INFO L93 Difference]: Finished difference Result 491 states and 589 transitions. [2020-09-04 15:23:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:23:36,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:23:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:36,691 INFO L225 Difference]: With dead ends: 491 [2020-09-04 15:23:36,691 INFO L226 Difference]: Without dead ends: 304 [2020-09-04 15:23:36,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:23:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-04 15:23:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 261. [2020-09-04 15:23:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-04 15:23:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 286 transitions. [2020-09-04 15:23:36,874 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 286 transitions. Word has length 153 [2020-09-04 15:23:36,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:36,875 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 286 transitions. [2020-09-04 15:23:36,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:23:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 286 transitions. [2020-09-04 15:23:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:23:36,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:36,881 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] [2020-09-04 15:23:36,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:23:36,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:36,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:36,882 INFO L82 PathProgramCache]: Analyzing trace with hash 936864637, now seen corresponding path program 1 times [2020-09-04 15:23:36,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:36,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117816313] [2020-09-04 15:23:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:36,886 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,329 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:23:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:23:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:23:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:37,438 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 15:23:37,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117816313] [2020-09-04 15:23:37,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:37,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:23:37,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323472183] [2020-09-04 15:23:37,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:23:37,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:37,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:23:37,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:23:37,443 INFO L87 Difference]: Start difference. First operand 261 states and 286 transitions. Second operand 4 states. [2020-09-04 15:23:38,099 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:39,144 INFO L93 Difference]: Finished difference Result 402 states and 456 transitions. [2020-09-04 15:23:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:23:39,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:23:39,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:39,150 INFO L225 Difference]: With dead ends: 402 [2020-09-04 15:23:39,151 INFO L226 Difference]: Without dead ends: 287 [2020-09-04 15:23:39,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:23:39,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-09-04 15:23:39,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 251. [2020-09-04 15:23:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-04 15:23:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 273 transitions. [2020-09-04 15:23:39,220 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 273 transitions. Word has length 154 [2020-09-04 15:23:39,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:39,221 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 273 transitions. [2020-09-04 15:23:39,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:23:39,221 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 273 transitions. [2020-09-04 15:23:39,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-04 15:23:39,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:39,225 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] [2020-09-04 15:23:39,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:23:39,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:39,226 INFO L82 PathProgramCache]: Analyzing trace with hash -367935570, now seen corresponding path program 1 times [2020-09-04 15:23:39,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:39,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321581891] [2020-09-04 15:23:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:39,229 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,643 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:39,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:23:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:23:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 15:23:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:39,951 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 15:23:39,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321581891] [2020-09-04 15:23:39,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:39,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:39,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770629177] [2020-09-04 15:23:39,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:39,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:39,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:39,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:39,959 INFO L87 Difference]: Start difference. First operand 251 states and 273 transitions. Second operand 9 states. [2020-09-04 15:23:40,630 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:41,093 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:23:41,330 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:23:41,652 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:41,955 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:42,235 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:43,244 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:23:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:45,732 INFO L93 Difference]: Finished difference Result 675 states and 782 transitions. [2020-09-04 15:23:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:23:45,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-09-04 15:23:45,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:45,746 INFO L225 Difference]: With dead ends: 675 [2020-09-04 15:23:45,746 INFO L226 Difference]: Without dead ends: 534 [2020-09-04 15:23:45,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:23:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-09-04 15:23:45,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 467. [2020-09-04 15:23:45,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-09-04 15:23:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 526 transitions. [2020-09-04 15:23:45,907 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 526 transitions. Word has length 163 [2020-09-04 15:23:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:45,908 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 526 transitions. [2020-09-04 15:23:45,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 526 transitions. [2020-09-04 15:23:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:23:45,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:45,912 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] [2020-09-04 15:23:45,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:23:45,913 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:45,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:45,913 INFO L82 PathProgramCache]: Analyzing trace with hash 586608814, now seen corresponding path program 1 times [2020-09-04 15:23:45,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:45,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471308851] [2020-09-04 15:23:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:45,940 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,274 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:46,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:23:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:23:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 15:23:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 15:23:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:46,472 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 15:23:46,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471308851] [2020-09-04 15:23:46,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:46,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:23:46,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547008912] [2020-09-04 15:23:46,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:23:46,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:46,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:23:46,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:23:46,478 INFO L87 Difference]: Start difference. First operand 467 states and 526 transitions. Second operand 9 states. [2020-09-04 15:23:47,122 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:49,194 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:49,528 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:49,900 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:50,256 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:50,548 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:23:50,846 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:51,130 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:23:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:52,050 INFO L93 Difference]: Finished difference Result 1264 states and 1525 transitions. [2020-09-04 15:23:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:23:52,051 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-04 15:23:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:52,058 INFO L225 Difference]: With dead ends: 1264 [2020-09-04 15:23:52,058 INFO L226 Difference]: Without dead ends: 907 [2020-09-04 15:23:52,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:23:52,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2020-09-04 15:23:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 807. [2020-09-04 15:23:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-09-04 15:23:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 935 transitions. [2020-09-04 15:23:52,334 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 935 transitions. Word has length 172 [2020-09-04 15:23:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:52,334 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 935 transitions. [2020-09-04 15:23:52,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:23:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 935 transitions. [2020-09-04 15:23:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:23:52,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:52,340 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] [2020-09-04 15:23:52,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:23:52,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:52,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1309262380, now seen corresponding path program 1 times [2020-09-04 15:23:52,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:52,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605356666] [2020-09-04 15:23:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:52,344 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,708 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:23:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:23:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:23:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:23:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:23:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:23:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:23:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:23:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:23:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:23:52,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-04 15:23:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:23:52,951 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 15:23:52,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605356666] [2020-09-04 15:23:52,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:23:52,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:23:52,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163968936] [2020-09-04 15:23:52,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:23:52,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:23:52,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:23:52,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:23:52,954 INFO L87 Difference]: Start difference. First operand 807 states and 935 transitions. Second operand 6 states. [2020-09-04 15:23:53,533 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:23:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:23:54,578 INFO L93 Difference]: Finished difference Result 1289 states and 1536 transitions. [2020-09-04 15:23:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:23:54,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-09-04 15:23:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:23:54,584 INFO L225 Difference]: With dead ends: 1289 [2020-09-04 15:23:54,584 INFO L226 Difference]: Without dead ends: 592 [2020-09-04 15:23:54,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:23:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-09-04 15:23:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 562. [2020-09-04 15:23:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-04 15:23:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 613 transitions. [2020-09-04 15:23:54,874 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 613 transitions. Word has length 177 [2020-09-04 15:23:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:23:54,875 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 613 transitions. [2020-09-04 15:23:54,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:23:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 613 transitions. [2020-09-04 15:23:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:23:54,879 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:23:54,880 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] [2020-09-04 15:23:54,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:23:54,880 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:23:54,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:23:54,881 INFO L82 PathProgramCache]: Analyzing trace with hash 95529110, now seen corresponding path program 1 times [2020-09-04 15:23:54,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:23:54,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203111923] [2020-09-04 15:23:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:23:54,885 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:23:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:55,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:23:55,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:23:55,294 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:23:55,294 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:23:55,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:23:55,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:23:55 BoogieIcfgContainer [2020-09-04 15:23:55,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:23:55,339 INFO L168 Benchmark]: Toolchain (without parser) took 23530.23 ms. Allocated memory was 138.9 MB in the beginning and 633.3 MB in the end (delta: 494.4 MB). Free memory was 102.5 MB in the beginning and 545.2 MB in the end (delta: -442.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:55,345 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:23:55,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 850.95 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 102.2 MB in the beginning and 172.4 MB in the end (delta: -70.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:55,348 INFO L168 Benchmark]: Boogie Preprocessor took 92.39 ms. Allocated memory is still 203.9 MB. Free memory was 172.4 MB in the beginning and 168.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:55,349 INFO L168 Benchmark]: RCFGBuilder took 1249.37 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 167.6 MB in the beginning and 176.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:55,349 INFO L168 Benchmark]: TraceAbstraction took 21331.79 ms. Allocated memory was 236.5 MB in the beginning and 633.3 MB in the end (delta: 396.9 MB). Free memory was 175.5 MB in the beginning and 545.2 MB in the end (delta: -369.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:23:55,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 850.95 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 102.2 MB in the beginning and 172.4 MB in the end (delta: -70.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.39 ms. Allocated memory is still 203.9 MB. Free memory was 172.4 MB in the beginning and 168.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1249.37 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 167.6 MB in the beginning and 176.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21331.79 ms. Allocated memory was 236.5 MB in the beginning and 633.3 MB in the end (delta: 396.9 MB). Free memory was 175.5 MB in the beginning and 545.2 MB in the end (delta: -369.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 541]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L177] int pumpRunning = 0; [L178] int systemActive = 1; [L438] int cleanupTimeShifts = 4; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L514] int retValue_acc ; [L515] int tmp ; [L519] FCALL select_helpers() [L520] FCALL select_features() [L521] CALL, EXPR valid_product() [L938] int retValue_acc ; [L941] retValue_acc = 1 [L942] return (retValue_acc); [L521] RET, EXPR valid_product() [L521] tmp = valid_product() [L523] COND TRUE \read(tmp) [L525] FCALL setup() [L526] CALL runTest() [L505] CALL test() [L372] int splverifierCounter ; [L373] int tmp ; [L374] int tmp___0 ; [L375] int tmp___1 ; [L376] int tmp___2 ; [L379] splverifierCounter = 0 [L381] COND TRUE 1 [L383] COND TRUE splverifierCounter < 4 [L389] tmp = __VERIFIER_nondet_int() [L391] COND TRUE \read(tmp) [L393] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L393] RET waterRise() [L399] tmp___0 = __VERIFIER_nondet_int() [L401] COND FALSE !(\read(tmp___0)) [L409] tmp___2 = __VERIFIER_nondet_int() [L411] COND FALSE !(\read(tmp___2)) [L415] tmp___1 = __VERIFIER_nondet_int() [L417] COND TRUE \read(tmp___1) [L419] CALL stopSystem() [L358] COND FALSE !(\read(pumpRunning)) [L365] systemActive = 0 [L419] RET stopSystem() [L426] CALL timeShift() [L184] COND FALSE !(\read(pumpRunning)) [L191] COND FALSE !(\read(systemActive)) [L199] CALL __utac_acc__Specification3_spec__1() [L139] int tmp ; [L140] int tmp___0 ; [L141] int tmp___1 ; [L145] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L145] RET, EXPR isMethaneLevelCritical() [L145] tmp = isMethaneLevelCritical() [L147] COND FALSE !(\read(tmp)) [L151] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L151] RET, EXPR getWaterLevel() [L151] tmp___0 = getWaterLevel() [L153] COND TRUE tmp___0 == 2 [L155] CALL, EXPR isPumpRunning() [L291] int retValue_acc ; [L294] retValue_acc = pumpRunning [L295] return (retValue_acc); [L155] RET, EXPR isPumpRunning() [L155] tmp___1 = isPumpRunning() [L157] COND FALSE !(\read(tmp___1)) [L161] CALL __automaton_fail() [L541] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 627 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1185 SDtfs, 1618 SDslu, 1507 SDs, 0 SdLazy, 3481 SolverSat, 521 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=807occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 276 StatesRemovedByMinimization, 5 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...