/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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:04:46,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:04:46,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:04:46,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:04:46,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:04:46,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:04:46,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:04:46,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:04:46,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:04:46,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:04:46,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:04:46,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:04:46,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:04:46,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:04:46,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:04:46,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:04:46,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:04:46,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:04:46,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:04:46,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:04:46,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:04:46,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:04:46,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:04:46,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:04:46,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:04:46,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:04:46,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:04:46,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:04:46,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:04:46,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:04:46,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:04:46,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:04:46,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:04:46,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:04:46,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:04:46,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:04:46,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:04:46,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:04:46,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:04:46,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:04:46,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:04:46,667 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 18:04:46,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:04:46,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:04:46,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:04:46,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:04:46,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:04:46,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:04:46,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:04:46,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:04:46,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:04:46,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:04:46,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:04:46,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:04:46,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:04:46,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:04:46,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:04:46,690 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:04:46,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:04:46,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:04:46,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:04:46,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:04:46,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:04:46,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:04:46,691 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:04:47,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:04:47,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:04:47,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:04:47,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:04:47,020 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:04:47,020 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-08-22 18:04:47,077 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17564ce70/466161d82ab84208a2fd6b73e1a1bba5/FLAGfea5cab48 [2020-08-22 18:04:47,619 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:04:47,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product25.cil.c [2020-08-22 18:04:47,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17564ce70/466161d82ab84208a2fd6b73e1a1bba5/FLAGfea5cab48 [2020-08-22 18:04:47,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17564ce70/466161d82ab84208a2fd6b73e1a1bba5 [2020-08-22 18:04:47,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:04:47,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:04:47,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:47,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:04:47,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:04:47,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:47" (1/1) ... [2020-08-22 18:04:47,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325abad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:47, skipping insertion in model container [2020-08-22 18:04:47,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:04:47" (1/1) ... [2020-08-22 18:04:47,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:04:47,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:04:48,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:48,353 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:04:48,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:04:48,616 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:04:48,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48 WrapperNode [2020-08-22 18:04:48,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:04:48,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:04:48,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:04:48,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:04:48,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 18:04:48,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 18:04:48,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 18:04:48,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 18:04:48,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 18:04:48,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 18:04:48,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (1/1) ... [2020-08-22 18:04:48,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:04:48,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:04:48,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:04:48,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:04:48,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (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 18:04:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:04:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:04:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:04:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:04:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:04:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:04:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:04:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:04:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:04:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:04:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:04:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:04:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 18:04:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:04:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:04:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:04:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:04:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:04:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:04:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:04:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:04:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:04:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:04:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 18:04:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:04:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 18:04:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:04:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:04:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:04:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:04:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:04:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 18:04:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:04:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:04:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:04:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:04:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:04:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:04:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:04:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:04:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:04:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:04:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:04:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:04:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:04:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:04:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:04:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:04:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:04:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:04:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:04:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:04:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:04:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:04:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:04:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:04:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:04:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:04:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:04:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:04:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:04:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:04:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 18:04:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:04:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:04:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:04:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:04:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:04:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:04:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:04:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:04:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:04:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:04:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:04:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:04:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:04:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:04:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:04:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 18:04:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 18:04:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 18:04:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:04:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:04:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:04:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:04:49,935 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:04:49,936 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:04:49,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:49 BoogieIcfgContainer [2020-08-22 18:04:49,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:04:49,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:04:49,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:04:49,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:04:49,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:04:47" (1/3) ... [2020-08-22 18:04:49,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461c8009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:49, skipping insertion in model container [2020-08-22 18:04:49,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:04:48" (2/3) ... [2020-08-22 18:04:49,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@461c8009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:49, skipping insertion in model container [2020-08-22 18:04:49,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:49" (3/3) ... [2020-08-22 18:04:49,952 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product25.cil.c [2020-08-22 18:04:49,963 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:04:49,973 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:04:49,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:04:50,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:04:50,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:04:50,015 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:04:50,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:04:50,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:04:50,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:04:50,016 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:04:50,016 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:04:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-08-22 18:04:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:04:50,060 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:50,061 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 18:04:50,062 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:50,070 INFO L82 PathProgramCache]: Analyzing trace with hash 984796511, now seen corresponding path program 1 times [2020-08-22 18:04:50,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:50,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145586218] [2020-08-22 18:04:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:50,139 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:50,806 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:50,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:50,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:50,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:50,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:04:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:50,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:51,024 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 18:04:51,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145586218] [2020-08-22 18:04:51,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:51,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:04:51,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495703138] [2020-08-22 18:04:51,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:04:51,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:51,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:04:51,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:51,069 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 3 states. [2020-08-22 18:04:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:52,286 INFO L93 Difference]: Finished difference Result 435 states and 517 transitions. [2020-08-22 18:04:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:04:52,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:04:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:52,306 INFO L225 Difference]: With dead ends: 435 [2020-08-22 18:04:52,306 INFO L226 Difference]: Without dead ends: 274 [2020-08-22 18:04:52,311 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 [2020-08-22 18:04:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-08-22 18:04:52,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 235. [2020-08-22 18:04:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-22 18:04:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2020-08-22 18:04:52,442 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 153 [2020-08-22 18:04:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:52,443 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2020-08-22 18:04:52,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:04:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2020-08-22 18:04:52,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:04:52,448 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:52,448 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 18:04:52,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:04:52,449 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:52,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:52,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1074714265, now seen corresponding path program 1 times [2020-08-22 18:04:52,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:52,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151949149] [2020-08-22 18:04:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:52,453 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:52,874 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:52,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:04:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:04:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:04:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:53,024 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 18:04:53,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151949149] [2020-08-22 18:04:53,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:53,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:04:53,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20278784] [2020-08-22 18:04:53,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:04:53,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:53,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:04:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:04:53,028 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 4 states. [2020-08-22 18:04:53,598 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:54,379 INFO L93 Difference]: Finished difference Result 352 states and 392 transitions. [2020-08-22 18:04:54,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:04:54,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:04:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:54,385 INFO L225 Difference]: With dead ends: 352 [2020-08-22 18:04:54,385 INFO L226 Difference]: Without dead ends: 257 [2020-08-22 18:04:54,388 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 18:04:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-08-22 18:04:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 225. [2020-08-22 18:04:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-22 18:04:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 240 transitions. [2020-08-22 18:04:54,457 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 240 transitions. Word has length 154 [2020-08-22 18:04:54,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:54,458 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 240 transitions. [2020-08-22 18:04:54,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:04:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 240 transitions. [2020-08-22 18:04:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 18:04:54,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:54,460 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 18:04:54,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:04:54,461 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:54,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:54,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1460051564, now seen corresponding path program 1 times [2020-08-22 18:04:54,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:54,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570798079] [2020-08-22 18:04:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:54,465 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,806 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:54,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 18:04:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:54,954 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 18:04:54,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570798079] [2020-08-22 18:04:54,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:54,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:04:54,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114183342] [2020-08-22 18:04:54,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:04:54,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:54,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:04:54,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:04:54,957 INFO L87 Difference]: Start difference. First operand 225 states and 240 transitions. Second operand 9 states. [2020-08-22 18:04:55,390 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:55,767 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:04:55,981 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:04:56,221 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:56,453 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:56,719 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:58,067 INFO L93 Difference]: Finished difference Result 372 states and 417 transitions. [2020-08-22 18:04:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:04:58,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-08-22 18:04:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:58,075 INFO L225 Difference]: With dead ends: 372 [2020-08-22 18:04:58,075 INFO L226 Difference]: Without dead ends: 257 [2020-08-22 18:04:58,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:04:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-08-22 18:04:58,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 225. [2020-08-22 18:04:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-22 18:04:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 239 transitions. [2020-08-22 18:04:58,144 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 239 transitions. Word has length 163 [2020-08-22 18:04:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:58,144 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 239 transitions. [2020-08-22 18:04:58,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:04:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2020-08-22 18:04:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 18:04:58,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:58,147 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 18:04:58,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:04:58,148 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash 973971077, now seen corresponding path program 1 times [2020-08-22 18:04:58,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:58,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215187060] [2020-08-22 18:04:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:58,152 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,474 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:58,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:04:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:04:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 18:04:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:04:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 18:04:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:58,635 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 18:04:58,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215187060] [2020-08-22 18:04:58,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:58,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:04:58,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095569509] [2020-08-22 18:04:58,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:04:58,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:58,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:04:58,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:04:58,638 INFO L87 Difference]: Start difference. First operand 225 states and 239 transitions. Second operand 9 states. [2020-08-22 18:04:59,164 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:00,869 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:01,163 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:01,468 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:01,755 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:02,012 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:05:02,292 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:02,564 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:05:03,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:03,199 INFO L93 Difference]: Finished difference Result 522 states and 613 transitions. [2020-08-22 18:05:03,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 18:05:03,202 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-08-22 18:05:03,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:03,208 INFO L225 Difference]: With dead ends: 522 [2020-08-22 18:05:03,209 INFO L226 Difference]: Without dead ends: 407 [2020-08-22 18:05:03,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-08-22 18:05:03,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-08-22 18:05:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 332. [2020-08-22 18:05:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-22 18:05:03,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 363 transitions. [2020-08-22 18:05:03,362 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 363 transitions. Word has length 171 [2020-08-22 18:05:03,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:03,363 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 363 transitions. [2020-08-22 18:05:03,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:05:03,363 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 363 transitions. [2020-08-22 18:05:03,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 18:05:03,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:03,366 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] [2020-08-22 18:05:03,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:05:03,367 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:03,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1376953546, now seen corresponding path program 1 times [2020-08-22 18:05:03,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:03,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200742841] [2020-08-22 18:05:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:03,370 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,741 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:05:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:05:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:05:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:05:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:05:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:05:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 18:05:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:05:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 18:05:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 18:05:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 18:05:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-22 18:05:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:05:03,934 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 18:05:03,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200742841] [2020-08-22 18:05:03,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:05:03,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 18:05:03,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520008155] [2020-08-22 18:05:03,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 18:05:03,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:05:03,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 18:05:03,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 18:05:03,937 INFO L87 Difference]: Start difference. First operand 332 states and 363 transitions. Second operand 6 states. [2020-08-22 18:05:04,678 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:05:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:05:05,380 INFO L93 Difference]: Finished difference Result 501 states and 567 transitions. [2020-08-22 18:05:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 18:05:05,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-08-22 18:05:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:05:05,384 INFO L225 Difference]: With dead ends: 501 [2020-08-22 18:05:05,384 INFO L226 Difference]: Without dead ends: 279 [2020-08-22 18:05:05,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-22 18:05:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-22 18:05:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 258. [2020-08-22 18:05:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-22 18:05:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 273 transitions. [2020-08-22 18:05:05,502 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 273 transitions. Word has length 176 [2020-08-22 18:05:05,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:05:05,503 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 273 transitions. [2020-08-22 18:05:05,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 18:05:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 273 transitions. [2020-08-22 18:05:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 18:05:05,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:05:05,506 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] [2020-08-22 18:05:05,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:05:05,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:05:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:05:05,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722854, now seen corresponding path program 1 times [2020-08-22 18:05:05,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:05:05,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999964450] [2020-08-22 18:05:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:05:05,511 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:05:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:05:05,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:05:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:05:05,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:05:05,906 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:05:05,906 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:05:05,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:05:05,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:05:05 BoogieIcfgContainer [2020-08-22 18:05:05,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:05:05,946 INFO L168 Benchmark]: Toolchain (without parser) took 18019.02 ms. Allocated memory was 144.7 MB in the beginning and 560.5 MB in the end (delta: 415.8 MB). Free memory was 101.5 MB in the beginning and 229.8 MB in the end (delta: -128.2 MB). Peak memory consumption was 287.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,952 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.57 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.3 MB in the beginning and 172.6 MB in the end (delta: -71.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,954 INFO L168 Benchmark]: Boogie Preprocessor took 87.61 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,955 INFO L168 Benchmark]: RCFGBuilder took 1237.29 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 168.3 MB in the beginning and 178.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,956 INFO L168 Benchmark]: TraceAbstraction took 15999.20 ms. Allocated memory was 234.4 MB in the beginning and 560.5 MB in the end (delta: 326.1 MB). Free memory was 178.3 MB in the beginning and 229.8 MB in the end (delta: -51.5 MB). Peak memory consumption was 274.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:05:05,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 144.7 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 689.57 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.3 MB in the beginning and 172.6 MB in the end (delta: -71.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.61 ms. Allocated memory is still 202.4 MB. Free memory was 172.6 MB in the beginning and 168.3 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1237.29 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 168.3 MB in the beginning and 178.3 MB in the end (delta: -10.0 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15999.20 ms. Allocated memory was 234.4 MB in the beginning and 560.5 MB in the end (delta: 326.1 MB). Free memory was 178.3 MB in the beginning and 229.8 MB in the end (delta: -51.5 MB). Peak memory consumption was 274.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L256] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L458] int waterLevel = 1; [L459] int methaneLevelCritical = 0; [L585] int cleanupTimeShifts = 4; [L686] int pumpRunning = 0; [L687] int systemActive = 1; [L661] int retValue_acc ; [L662] int tmp ; [L666] FCALL select_helpers() [L667] FCALL select_features() [L668] CALL, EXPR valid_product() [L576] int retValue_acc ; [L579] retValue_acc = 1 [L580] return (retValue_acc); [L668] RET, EXPR valid_product() [L668] tmp = valid_product() [L670] COND TRUE \read(tmp) [L672] FCALL setup() [L673] CALL runTest() [L655] CALL test() [L857] int splverifierCounter ; [L858] int tmp ; [L859] int tmp___0 ; [L860] int tmp___1 ; [L861] int tmp___2 ; [L864] splverifierCounter = 0 [L866] COND TRUE 1 [L868] COND TRUE splverifierCounter < 4 [L874] tmp = __VERIFIER_nondet_int() [L876] COND TRUE \read(tmp) [L878] CALL waterRise() [L476] COND TRUE waterLevel < 2 [L477] waterLevel = waterLevel + 1 [L878] RET waterRise() [L884] tmp___0 = __VERIFIER_nondet_int() [L886] COND FALSE !(\read(tmp___0)) [L894] tmp___2 = __VERIFIER_nondet_int() [L896] COND TRUE \read(tmp___2) [L909] CALL timeShift() [L693] COND FALSE !(\read(pumpRunning)) [L700] COND TRUE \read(systemActive) [L702] CALL processEnvironment() [L722] int tmp ; [L725] COND FALSE !(\read(pumpRunning)) [L740] FCALL processEnvironment__wrappee__base() [L702] RET processEnvironment() [L708] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L497] int retValue_acc ; [L500] retValue_acc = methaneLevelCritical [L501] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L529] int retValue_acc ; [L532] retValue_acc = waterLevel [L533] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L792] int retValue_acc ; [L795] retValue_acc = pumpRunning [L796] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1032 SDtfs, 1392 SDslu, 1219 SDs, 0 SdLazy, 2428 SolverSat, 396 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred 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: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 199 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...