/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:05:15,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:05:15,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:05:15,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:05:15,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:05:15,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:05:15,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:05:15,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:05:15,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:05:15,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:05:15,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:05:15,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:05:15,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:05:15,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:05:15,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:05:15,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:05:15,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:05:15,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:05:15,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:05:15,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:05:15,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:05:15,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:05:15,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:05:15,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:05:15,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:05:15,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:05:15,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:05:15,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:05:15,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:05:15,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:05:15,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:05:15,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:05:15,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:05:15,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:05:15,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:05:15,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:05:15,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:05:15,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:05:15,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:05:15,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:05:15,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:05:15,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:05:15,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:05:15,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:05:15,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:05:15,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:05:15,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:05:15,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:05:15,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:05:15,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:05:15,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:05:15,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:05:15,501 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:05:15,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:05:15,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:05:15,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:05:15,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:05:15,502 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:05:15,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:05:15,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:05:15,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:05:15,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:05:15,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:05:15,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:05:15,504 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:05:15,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:05:15,864 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:05:15,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:05:15,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:05:15,870 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:05:15,871 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product35.cil.c [2020-08-22 18:05:15,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7046644/9e24551ba39448bc946451735bc37892/FLAGe6b78178e [2020-08-22 18:05:16,418 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:05:16,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product35.cil.c [2020-08-22 18:05:16,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7046644/9e24551ba39448bc946451735bc37892/FLAGe6b78178e [2020-08-22 18:05:16,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb7046644/9e24551ba39448bc946451735bc37892 [2020-08-22 18:05:16,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:05:16,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:05:16,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:05:16,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:05:16,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:05:16,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:05:16" (1/1) ... [2020-08-22 18:05:16,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30847a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:16, skipping insertion in model container [2020-08-22 18:05:16,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:05:16" (1/1) ... [2020-08-22 18:05:16,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:05:16,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:05:17,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:05:17,280 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:05:17,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:05:17,437 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:05:17,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17 WrapperNode [2020-08-22 18:05:17,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:05:17,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:05:17,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:05:17,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:05:17,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (1/1) ... [2020-08-22 18:05:17,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (1/1) ... [2020-08-22 18:05:17,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (1/1) ... [2020-08-22 18:05:17,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (1/1) ... [2020-08-22 18:05:17,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (1/1) ... [2020-08-22 18:05:17,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (1/1) ... [2020-08-22 18:05:17,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (1/1) ... [2020-08-22 18:05:17,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:05:17,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:05:17,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:05:17,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:05:17,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:05:17,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:05:17,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:05:17,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:05:17,625 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:05:17,625 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:05:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:05:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:05:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:05:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:05:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:05:17,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:05:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:05:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 18:05:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 18:05:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:05:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:05:17,627 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:05:17,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:05:17,628 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:05:17,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:05:17,628 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:05:17,628 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:05:17,628 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:05:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:05:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:05:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:05:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 18:05:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:05:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:05:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:05:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:05:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:05:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:05:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:05:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:05:17,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:05:17,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:05:17,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:05:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:05:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:05:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:05:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:05:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:05:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 18:05:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:05:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:05:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:05:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:05:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:05:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:05:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 18:05:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:05:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:05:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:05:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:05:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:05:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:05:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:05:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 18:05:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:05:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:05:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:05:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:05:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:05:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:05:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:05:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:05:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:05:17,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:05:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:05:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:05:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:05:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:05:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:05:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:05:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:05:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:05:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:05:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:05:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:05:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:05:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:05:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:05:17,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:05:18,743 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:05:18,744 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:05:18,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:05:18 BoogieIcfgContainer [2020-08-22 18:05:18,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:05:18,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:05:18,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:05:18,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:05:18,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:05:16" (1/3) ... [2020-08-22 18:05:18,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cb27f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:05:18, skipping insertion in model container [2020-08-22 18:05:18,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:05:17" (2/3) ... [2020-08-22 18:05:18,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cb27f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:05:18, skipping insertion in model container [2020-08-22 18:05:18,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:05:18" (3/3) ... [2020-08-22 18:05:18,759 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product35.cil.c [2020-08-22 18:05:18,771 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:05:18,779 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:05:18,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:05:18,819 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:05:18,819 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:05:18,819 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:05:18,820 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:05:18,820 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:05:18,820 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:05:18,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:05:18,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:05:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states. [2020-08-22 18:05:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:05:18,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:18,865 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] [2020-08-22 18:05:18,865 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2007669194, now seen corresponding path program 1 times [2020-08-22 18:05:18,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:18,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443003494] [2020-08-22 18:05:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:18,958 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,627 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:19,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:05:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:05:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:05:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:19,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443003494] [2020-08-22 18:05:19,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:19,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:05:19,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867179976] [2020-08-22 18:05:19,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:05:19,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:19,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:05:19,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:05:19,906 INFO L87 Difference]: Start difference. First operand 304 states. Second operand 3 states. [2020-08-22 18:05:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:21,219 INFO L93 Difference]: Finished difference Result 461 states and 548 transitions. [2020-08-22 18:05:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:05:21,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:05:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:21,238 INFO L225 Difference]: With dead ends: 461 [2020-08-22 18:05:21,238 INFO L226 Difference]: Without dead ends: 288 [2020-08-22 18:05:21,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:05:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-08-22 18:05:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 247. [2020-08-22 18:05:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-22 18:05:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 267 transitions. [2020-08-22 18:05:21,362 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 267 transitions. Word has length 153 [2020-08-22 18:05:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:21,364 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 267 transitions. [2020-08-22 18:05:21,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:05:21,364 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 267 transitions. [2020-08-22 18:05:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:05:21,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:21,368 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] [2020-08-22 18:05:21,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:05:21,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:21,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:21,369 INFO L82 PathProgramCache]: Analyzing trace with hash -986006503, now seen corresponding path program 1 times [2020-08-22 18:05:21,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:21,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862669691] [2020-08-22 18:05:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:21,372 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,742 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:21,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:05:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:05:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:05:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:21,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862669691] [2020-08-22 18:05:21,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:21,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:05:21,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737999516] [2020-08-22 18:05:21,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:05:21,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:05:21,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:05:21,849 INFO L87 Difference]: Start difference. First operand 247 states and 267 transitions. Second operand 4 states. [2020-08-22 18:05:22,447 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:05:23,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:23,259 INFO L93 Difference]: Finished difference Result 369 states and 413 transitions. [2020-08-22 18:05:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:05:23,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:05:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:23,264 INFO L225 Difference]: With dead ends: 369 [2020-08-22 18:05:23,264 INFO L226 Difference]: Without dead ends: 271 [2020-08-22 18:05:23,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:05:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-22 18:05:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 237. [2020-08-22 18:05:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-22 18:05:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 254 transitions. [2020-08-22 18:05:23,338 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 254 transitions. Word has length 154 [2020-08-22 18:05:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:23,339 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 254 transitions. [2020-08-22 18:05:23,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:05:23,339 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 254 transitions. [2020-08-22 18:05:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 18:05:23,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:23,341 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] [2020-08-22 18:05:23,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:05:23,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:23,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1560512259, now seen corresponding path program 1 times [2020-08-22 18:05:23,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:23,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747827155] [2020-08-22 18:05:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:23,345 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,647 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:05:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:05:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 18:05:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:23,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747827155] [2020-08-22 18:05:23,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:23,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:05:23,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6096469] [2020-08-22 18:05:23,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:05:23,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:23,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:05:23,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:05:23,812 INFO L87 Difference]: Start difference. First operand 237 states and 254 transitions. Second operand 9 states. [2020-08-22 18:05:24,243 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:24,559 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:05:24,820 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:05:25,054 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:25,278 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:25,497 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:26,378 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:05:28,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:28,135 INFO L93 Difference]: Finished difference Result 629 states and 719 transitions. [2020-08-22 18:05:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:05:28,139 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-08-22 18:05:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:28,148 INFO L225 Difference]: With dead ends: 629 [2020-08-22 18:05:28,149 INFO L226 Difference]: Without dead ends: 502 [2020-08-22 18:05:28,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:05:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-22 18:05:28,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 427. [2020-08-22 18:05:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-08-22 18:05:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 472 transitions. [2020-08-22 18:05:28,335 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 472 transitions. Word has length 163 [2020-08-22 18:05:28,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:28,336 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 472 transitions. [2020-08-22 18:05:28,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:05:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 472 transitions. [2020-08-22 18:05:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 18:05:28,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:28,341 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] [2020-08-22 18:05:28,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:05:28,342 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:28,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:28,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1484282150, now seen corresponding path program 1 times [2020-08-22 18:05:28,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:28,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237231140] [2020-08-22 18:05:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:28,346 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,618 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:05:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:05:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 18:05:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:05:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 18:05:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:28,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237231140] [2020-08-22 18:05:28,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:28,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:05:28,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631112011] [2020-08-22 18:05:28,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:05:28,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:28,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:05:28,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:05:28,736 INFO L87 Difference]: Start difference. First operand 427 states and 472 transitions. Second operand 6 states. [2020-08-22 18:05:29,197 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:30,995 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:05:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:31,565 INFO L93 Difference]: Finished difference Result 1094 states and 1277 transitions. [2020-08-22 18:05:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:05:31,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-08-22 18:05:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:31,573 INFO L225 Difference]: With dead ends: 1094 [2020-08-22 18:05:31,573 INFO L226 Difference]: Without dead ends: 777 [2020-08-22 18:05:31,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:05:31,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-08-22 18:05:31,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 661. [2020-08-22 18:05:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 661 states. [2020-08-22 18:05:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 730 transitions. [2020-08-22 18:05:31,788 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 730 transitions. Word has length 171 [2020-08-22 18:05:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:31,788 INFO L479 AbstractCegarLoop]: Abstraction has 661 states and 730 transitions. [2020-08-22 18:05:31,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:05:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 730 transitions. [2020-08-22 18:05:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-08-22 18:05:31,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:31,791 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] [2020-08-22 18:05:31,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:05:31,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:31,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:31,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1122738503, now seen corresponding path program 1 times [2020-08-22 18:05:31,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:31,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583713052] [2020-08-22 18:05:31,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:31,795 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,189 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:32,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 18:05:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 18:05:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-22 18:05:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-22 18:05:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:05:32,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583713052] [2020-08-22 18:05:32,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:32,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:05:32,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110390462] [2020-08-22 18:05:32,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:05:32,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:05:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:05:32,350 INFO L87 Difference]: Start difference. First operand 661 states and 730 transitions. Second operand 9 states. [2020-08-22 18:05:32,763 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:34,071 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:34,321 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:34,623 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:34,883 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:35,103 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:35,384 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:35,603 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:36,746 INFO L93 Difference]: Finished difference Result 1698 states and 1975 transitions. [2020-08-22 18:05:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:05:36,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-08-22 18:05:36,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:36,757 INFO L225 Difference]: With dead ends: 1698 [2020-08-22 18:05:36,758 INFO L226 Difference]: Without dead ends: 1147 [2020-08-22 18:05:36,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:05:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-08-22 18:05:37,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1064. [2020-08-22 18:05:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-08-22 18:05:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1191 transitions. [2020-08-22 18:05:37,231 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1191 transitions. Word has length 172 [2020-08-22 18:05:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:37,232 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1191 transitions. [2020-08-22 18:05:37,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:05:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1191 transitions. [2020-08-22 18:05:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-22 18:05:37,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:37,235 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] [2020-08-22 18:05:37,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:05:37,236 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:37,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1199080031, now seen corresponding path program 1 times [2020-08-22 18:05:37,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:37,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97798789] [2020-08-22 18:05:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:37,239 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:05:37,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:05:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:05:37,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:05:37,592 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:05:37,592 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:05:37,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:05:37,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:05:37 BoogieIcfgContainer [2020-08-22 18:05:37,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:05:37,632 INFO L168 Benchmark]: Toolchain (without parser) took 20866.48 ms. Allocated memory was 141.6 MB in the beginning and 652.2 MB in the end (delta: 510.7 MB). Free memory was 104.9 MB in the beginning and 299.3 MB in the end (delta: -194.4 MB). Peak memory consumption was 316.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:37,637 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:05:37,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.10 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.7 MB in the beginning and 173.3 MB in the end (delta: -68.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:37,639 INFO L168 Benchmark]: Boogie Preprocessor took 116.30 ms. Allocated memory is still 204.5 MB. Free memory was 173.3 MB in the beginning and 168.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:37,640 INFO L168 Benchmark]: RCFGBuilder took 1195.66 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 168.7 MB in the beginning and 170.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:37,640 INFO L168 Benchmark]: TraceAbstraction took 18877.53 ms. Allocated memory was 233.8 MB in the beginning and 652.2 MB in the end (delta: 418.4 MB). Free memory was 170.8 MB in the beginning and 299.3 MB in the end (delta: -128.5 MB). Peak memory consumption was 289.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:37,652 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 672.10 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.7 MB in the beginning and 173.3 MB in the end (delta: -68.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.30 ms. Allocated memory is still 204.5 MB. Free memory was 173.3 MB in the beginning and 168.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1195.66 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 168.7 MB in the beginning and 170.8 MB in the end (delta: -2.1 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18877.53 ms. Allocated memory was 233.8 MB in the beginning and 652.2 MB in the end (delta: 418.4 MB). Free memory was 170.8 MB in the beginning and 299.3 MB in the end (delta: -128.5 MB). Peak memory consumption was 289.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 556]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L120] int pumpRunning = 0; [L121] int systemActive = 1; [L324] int cleanupTimeShifts = 4; [L423] int waterLevel = 1; [L424] int methaneLevelCritical = 0; [L730] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L400] int retValue_acc ; [L401] int tmp ; [L405] FCALL select_helpers() [L406] FCALL select_features() [L407] CALL, EXPR valid_product() [L543] int retValue_acc ; [L546] retValue_acc = 1 [L547] return (retValue_acc); [L407] RET, EXPR valid_product() [L407] tmp = valid_product() [L409] COND TRUE \read(tmp) [L411] FCALL setup() [L412] CALL runTest() [L391] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L441] COND TRUE waterLevel < 2 [L442] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp___2)) [L89] tmp___1 = __VERIFIER_nondet_int() [L91] COND TRUE \read(tmp___1) [L93] CALL stopSystem() [L276] COND FALSE !(\read(pumpRunning)) [L283] systemActive = 0 [L93] RET stopSystem() [L100] CALL timeShift() [L128] COND FALSE !(\read(pumpRunning)) [L135] COND FALSE !(\read(systemActive)) [L143] CALL __utac_acc__Specification3_spec__1() [L291] int tmp ; [L292] int tmp___0 ; [L293] int tmp___1 ; [L297] CALL, EXPR isMethaneLevelCritical() [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); [L297] RET, EXPR isMethaneLevelCritical() [L297] tmp = isMethaneLevelCritical() [L299] COND FALSE !(\read(tmp)) [L303] CALL, EXPR getWaterLevel() [L494] int retValue_acc ; [L497] retValue_acc = waterLevel [L498] return (retValue_acc); [L303] RET, EXPR getWaterLevel() [L303] tmp___0 = getWaterLevel() [L305] COND TRUE tmp___0 == 2 [L307] CALL, EXPR isPumpRunning() [L209] int retValue_acc ; [L212] retValue_acc = pumpRunning [L213] return (retValue_acc); [L307] RET, EXPR isPumpRunning() [L307] tmp___1 = isPumpRunning() [L309] COND FALSE !(\read(tmp___1)) [L313] CALL __automaton_fail() [L556] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1176 SDtfs, 1582 SDslu, 1595 SDs, 0 SdLazy, 3348 SolverSat, 487 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1064occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 349 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...