/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_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:25:46,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:25:46,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:25:46,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:25:46,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:25:46,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:25:46,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:25:46,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:25:46,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:25:46,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:25:46,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:25:46,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:25:46,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:25:46,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:25:46,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:25:46,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:25:46,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:25:46,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:25:46,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:25:46,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:25:46,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:25:46,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:25:46,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:25:46,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:25:46,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:25:46,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:25:46,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:25:46,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:25:46,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:25:46,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:25:46,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:25:46,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:25:46,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:25:46,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:25:46,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:25:46,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:25:46,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:25:46,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:25:46,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:25:46,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:25:46,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:25:46,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 12:25:46,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:25:46,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:25:46,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:25:46,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:25:46,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:25:46,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:25:46,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:25:46,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:25:46,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:25:46,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:25:46,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:25:46,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:25:46,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:25:46,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:25:46,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:25:46,806 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:25:46,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:25:46,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:25:46,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:25:46,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:25:46,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:25:46,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:25:46,807 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:25:47,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:25:47,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:25:47,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:25:47,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:25:47,110 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:25:47,111 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-07-07 12:25:47,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ea38532/e3037118afa241fbbbd66951afe303be/FLAG2906e18ef [2020-07-07 12:25:47,763 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:25:47,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-07-07 12:25:47,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ea38532/e3037118afa241fbbbd66951afe303be/FLAG2906e18ef [2020-07-07 12:25:47,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ea38532/e3037118afa241fbbbd66951afe303be [2020-07-07 12:25:48,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:25:48,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:25:48,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:48,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:25:48,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:25:48,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be4e3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48, skipping insertion in model container [2020-07-07 12:25:48,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:25:48,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:25:48,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:48,395 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:25:48,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:48,681 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:25:48,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48 WrapperNode [2020-07-07 12:25:48,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:48,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:25:48,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:25:48,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:25:48,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (1/1) ... [2020-07-07 12:25:48,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:25:48,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:25:48,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:25:48,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:25:48,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (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 [2020-07-07 12:25:48,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:25:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:25:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:25:48,867 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:25:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:25:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:25:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:25:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:25:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:25:48,868 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:48,869 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-07 12:25:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:25:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:25:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:25:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:25:48,870 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:25:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:25:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:25:48,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-07 12:25:48,872 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:25:48,873 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:25:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:25:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:25:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:25:48,875 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:25:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:25:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:25:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-07 12:25:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:25:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:25:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:25:48,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:25:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:25:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:25:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:25:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:25:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:25:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:25:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:25:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:25:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:25:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:25:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:25:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:25:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:25:48,879 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:25:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:25:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:25:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:25:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:25:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:25:48,880 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:25:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:25:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:25:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-07 12:25:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:25:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:25:48,881 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:25:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:25:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:25:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:25:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:25:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:48,882 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-07 12:25:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-07 12:25:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:25:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:25:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:25:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:25:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:25:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:25:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:25:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:25:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:25:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:25:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:25:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:48,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:25:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:25:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:25:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:25:48,887 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:25:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:25:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:25:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:25:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:25:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:25:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:25:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:25:50,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:25:50,106 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:25:50,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:50 BoogieIcfgContainer [2020-07-07 12:25:50,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:25:50,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:25:50,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:25:50,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:25:50,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:25:48" (1/3) ... [2020-07-07 12:25:50,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae3a035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:50, skipping insertion in model container [2020-07-07 12:25:50,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:48" (2/3) ... [2020-07-07 12:25:50,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae3a035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:50, skipping insertion in model container [2020-07-07 12:25:50,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:50" (3/3) ... [2020-07-07 12:25:50,129 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-07-07 12:25:50,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:25:50,150 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:25:50,164 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:25:50,182 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:25:50,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:25:50,183 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:25:50,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:25:50,185 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:25:50,185 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:25:50,186 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:25:50,186 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:25:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2020-07-07 12:25:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:25:50,229 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:50,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:50,231 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:50,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:50,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2046718669, now seen corresponding path program 1 times [2020-07-07 12:25:50,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:50,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377614323] [2020-07-07 12:25:50,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:50,986 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:51,125 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:51,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377614323] [2020-07-07 12:25:51,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:51,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:25:51,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864499596] [2020-07-07 12:25:51,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:25:51,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:51,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:25:51,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:51,152 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 3 states. [2020-07-07 12:25:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:52,717 INFO L93 Difference]: Finished difference Result 545 states and 652 transitions. [2020-07-07 12:25:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:25:52,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:25:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:52,737 INFO L225 Difference]: With dead ends: 545 [2020-07-07 12:25:52,737 INFO L226 Difference]: Without dead ends: 332 [2020-07-07 12:25:52,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-07-07 12:25:52,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 287. [2020-07-07 12:25:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-07-07 12:25:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 316 transitions. [2020-07-07 12:25:52,899 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 316 transitions. Word has length 142 [2020-07-07 12:25:52,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:52,900 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 316 transitions. [2020-07-07 12:25:52,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:25:52,901 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 316 transitions. [2020-07-07 12:25:52,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:25:52,905 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:52,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:25:52,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:25:52,906 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:52,907 INFO L82 PathProgramCache]: Analyzing trace with hash 69871948, now seen corresponding path program 1 times [2020-07-07 12:25:52,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:52,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496287032] [2020-07-07 12:25:52,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:53,288 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:53,354 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:53,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496287032] [2020-07-07 12:25:53,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:53,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:25:53,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214031426] [2020-07-07 12:25:53,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:25:53,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:53,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:25:53,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:25:53,357 INFO L87 Difference]: Start difference. First operand 287 states and 316 transitions. Second operand 4 states. [2020-07-07 12:25:53,981 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:55,238 INFO L93 Difference]: Finished difference Result 456 states and 519 transitions. [2020-07-07 12:25:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:25:55,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:25:55,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:55,245 INFO L225 Difference]: With dead ends: 456 [2020-07-07 12:25:55,245 INFO L226 Difference]: Without dead ends: 315 [2020-07-07 12:25:55,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:25:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-07-07 12:25:55,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 277. [2020-07-07 12:25:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-07-07 12:25:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 303 transitions. [2020-07-07 12:25:55,325 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 303 transitions. Word has length 143 [2020-07-07 12:25:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:55,326 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 303 transitions. [2020-07-07 12:25:55,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:25:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 303 transitions. [2020-07-07 12:25:55,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-07 12:25:55,329 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:55,329 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] [2020-07-07 12:25:55,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:25:55,330 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1405476844, now seen corresponding path program 1 times [2020-07-07 12:25:55,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:55,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848498656] [2020-07-07 12:25:55,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,672 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:55,911 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:55,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848498656] [2020-07-07 12:25:55,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:55,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:55,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533056590] [2020-07-07 12:25:55,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:55,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:55,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:55,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:55,915 INFO L87 Difference]: Start difference. First operand 277 states and 303 transitions. Second operand 9 states. [2020-07-07 12:25:56,379 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:56,716 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:56,983 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-07-07 12:25:57,238 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:57,474 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:57,699 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:58,625 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:01,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:01,140 INFO L93 Difference]: Finished difference Result 746 states and 866 transitions. [2020-07-07 12:26:01,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:26:01,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-07-07 12:26:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:01,148 INFO L225 Difference]: With dead ends: 746 [2020-07-07 12:26:01,148 INFO L226 Difference]: Without dead ends: 579 [2020-07-07 12:26:01,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-07-07 12:26:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-07-07 12:26:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 508. [2020-07-07 12:26:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-07-07 12:26:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 574 transitions. [2020-07-07 12:26:01,361 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 574 transitions. Word has length 152 [2020-07-07 12:26:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:01,362 INFO L479 AbstractCegarLoop]: Abstraction has 508 states and 574 transitions. [2020-07-07 12:26:01,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:26:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 574 transitions. [2020-07-07 12:26:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:26:01,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:01,366 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] [2020-07-07 12:26:01,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:26:01,367 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1864711332, now seen corresponding path program 1 times [2020-07-07 12:26:01,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:01,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360980001] [2020-07-07 12:26:01,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,723 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:01,909 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:01,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360980001] [2020-07-07 12:26:01,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:01,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:26:01,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899471527] [2020-07-07 12:26:01,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:26:01,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:01,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:26:01,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:26:01,911 INFO L87 Difference]: Start difference. First operand 508 states and 574 transitions. Second operand 9 states. [2020-07-07 12:26:02,478 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:03,658 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:03,945 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:04,369 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:04,665 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:05,178 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:05,498 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:05,806 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:06,387 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:07,647 INFO L93 Difference]: Finished difference Result 1427 states and 1716 transitions. [2020-07-07 12:26:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:26:07,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-07-07 12:26:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:07,655 INFO L225 Difference]: With dead ends: 1427 [2020-07-07 12:26:07,655 INFO L226 Difference]: Without dead ends: 1029 [2020-07-07 12:26:07,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:26:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-07-07 12:26:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 867. [2020-07-07 12:26:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-07-07 12:26:07,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 994 transitions. [2020-07-07 12:26:07,915 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 994 transitions. Word has length 161 [2020-07-07 12:26:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:07,916 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 994 transitions. [2020-07-07 12:26:07,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:26:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 994 transitions. [2020-07-07 12:26:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 12:26:07,920 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:07,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:07,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:26:07,921 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:07,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:07,921 INFO L82 PathProgramCache]: Analyzing trace with hash 206285744, now seen corresponding path program 1 times [2020-07-07 12:26:07,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:07,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113466481] [2020-07-07 12:26:07,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,180 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:08,354 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:08,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113466481] [2020-07-07 12:26:08,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:08,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:26:08,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767258445] [2020-07-07 12:26:08,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:26:08,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:08,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:26:08,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:26:08,357 INFO L87 Difference]: Start difference. First operand 867 states and 994 transitions. Second operand 10 states. [2020-07-07 12:26:09,039 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:10,528 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:10,759 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:11,027 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:11,317 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:11,569 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:12,252 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:12,508 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:12,830 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:14,236 INFO L93 Difference]: Finished difference Result 2220 states and 2745 transitions. [2020-07-07 12:26:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:26:14,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-07-07 12:26:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:14,248 INFO L225 Difference]: With dead ends: 2220 [2020-07-07 12:26:14,248 INFO L226 Difference]: Without dead ends: 1463 [2020-07-07 12:26:14,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-07-07 12:26:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-07-07 12:26:14,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1201. [2020-07-07 12:26:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1201 states. [2020-07-07 12:26:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1393 transitions. [2020-07-07 12:26:14,722 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1393 transitions. Word has length 166 [2020-07-07 12:26:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:14,722 INFO L479 AbstractCegarLoop]: Abstraction has 1201 states and 1393 transitions. [2020-07-07 12:26:14,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:26:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1393 transitions. [2020-07-07 12:26:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 12:26:14,727 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:14,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:14,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:26:14,727 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:14,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:14,728 INFO L82 PathProgramCache]: Analyzing trace with hash -543136798, now seen corresponding path program 1 times [2020-07-07 12:26:14,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:14,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423070038] [2020-07-07 12:26:14,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,009 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:15,213 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:15,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423070038] [2020-07-07 12:26:15,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:15,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 12:26:15,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063647881] [2020-07-07 12:26:15,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 12:26:15,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:15,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 12:26:15,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-07-07 12:26:15,217 INFO L87 Difference]: Start difference. First operand 1201 states and 1393 transitions. Second operand 13 states. [2020-07-07 12:26:15,817 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:16,050 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:16,331 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:16,571 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:16,799 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:17,720 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:17,972 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:18,256 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:18,562 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:18,813 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:20,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:20,606 INFO L93 Difference]: Finished difference Result 2708 states and 3381 transitions. [2020-07-07 12:26:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:26:20,607 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2020-07-07 12:26:20,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:20,618 INFO L225 Difference]: With dead ends: 2708 [2020-07-07 12:26:20,618 INFO L226 Difference]: Without dead ends: 1617 [2020-07-07 12:26:20,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-07-07 12:26:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2020-07-07 12:26:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1231. [2020-07-07 12:26:21,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2020-07-07 12:26:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1425 transitions. [2020-07-07 12:26:21,014 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1425 transitions. Word has length 200 [2020-07-07 12:26:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:21,015 INFO L479 AbstractCegarLoop]: Abstraction has 1231 states and 1425 transitions. [2020-07-07 12:26:21,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 12:26:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1425 transitions. [2020-07-07 12:26:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 12:26:21,019 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:21,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:21,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:26:21,020 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:21,020 INFO L82 PathProgramCache]: Analyzing trace with hash -956768190, now seen corresponding path program 1 times [2020-07-07 12:26:21,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:21,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963884865] [2020-07-07 12:26:21,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,271 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:21,527 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:21,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963884865] [2020-07-07 12:26:21,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:21,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:26:21,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437350154] [2020-07-07 12:26:21,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:26:21,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:21,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:26:21,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:26:21,529 INFO L87 Difference]: Start difference. First operand 1231 states and 1425 transitions. Second operand 10 states. [2020-07-07 12:26:22,749 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:22,989 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:23,256 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:26:23,502 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:23,768 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:24,034 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:25,432 INFO L93 Difference]: Finished difference Result 2750 states and 3362 transitions. [2020-07-07 12:26:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 12:26:25,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 200 [2020-07-07 12:26:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:25,443 INFO L225 Difference]: With dead ends: 2750 [2020-07-07 12:26:25,443 INFO L226 Difference]: Without dead ends: 1629 [2020-07-07 12:26:25,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-07-07 12:26:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2020-07-07 12:26:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1263. [2020-07-07 12:26:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-07-07 12:26:26,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1457 transitions. [2020-07-07 12:26:26,080 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1457 transitions. Word has length 200 [2020-07-07 12:26:26,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:26,081 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1457 transitions. [2020-07-07 12:26:26,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:26:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1457 transitions. [2020-07-07 12:26:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-07-07 12:26:26,085 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:26,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:26,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:26:26,086 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:26,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:26,086 INFO L82 PathProgramCache]: Analyzing trace with hash -612654907, now seen corresponding path program 1 times [2020-07-07 12:26:26,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:26,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363163422] [2020-07-07 12:26:26,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,443 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:26:26,652 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:26,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363163422] [2020-07-07 12:26:26,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:26,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 12:26:26,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44228640] [2020-07-07 12:26:26,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 12:26:26,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:26,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 12:26:26,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 12:26:26,654 INFO L87 Difference]: Start difference. First operand 1263 states and 1457 transitions. Second operand 7 states. [2020-07-07 12:26:27,131 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:27,634 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:31,105 INFO L93 Difference]: Finished difference Result 4116 states and 5135 transitions. [2020-07-07 12:26:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:26:31,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2020-07-07 12:26:31,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:31,123 INFO L225 Difference]: With dead ends: 4116 [2020-07-07 12:26:31,123 INFO L226 Difference]: Without dead ends: 2963 [2020-07-07 12:26:31,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-07-07 12:26:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-07-07 12:26:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2459. [2020-07-07 12:26:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2020-07-07 12:26:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 2865 transitions. [2020-07-07 12:26:32,226 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 2865 transitions. Word has length 200 [2020-07-07 12:26:32,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:32,226 INFO L479 AbstractCegarLoop]: Abstraction has 2459 states and 2865 transitions. [2020-07-07 12:26:32,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 12:26:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 2865 transitions. [2020-07-07 12:26:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-07 12:26:32,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:32,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 12:26:32,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:26:32,231 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:32,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1591834572, now seen corresponding path program 1 times [2020-07-07 12:26:32,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:32,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792546621] [2020-07-07 12:26:32,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:26:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:26:32,506 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:32,506 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:26:32,506 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:26:32,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:26:32,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:26:32 BoogieIcfgContainer [2020-07-07 12:26:32,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:26:32,545 INFO L168 Benchmark]: Toolchain (without parser) took 44535.69 ms. Allocated memory was 145.2 MB in the beginning and 950.0 MB in the end (delta: 804.8 MB). Free memory was 102.4 MB in the beginning and 234.1 MB in the end (delta: -131.6 MB). Peak memory consumption was 673.1 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:32,549 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:26:32,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.97 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 102.2 MB in the beginning and 171.3 MB in the end (delta: -69.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:32,556 INFO L168 Benchmark]: Boogie Preprocessor took 107.06 ms. Allocated memory is still 203.4 MB. Free memory was 171.3 MB in the beginning and 166.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:32,557 INFO L168 Benchmark]: RCFGBuilder took 1330.31 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 166.4 MB in the beginning and 173.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:32,561 INFO L168 Benchmark]: TraceAbstraction took 42421.07 ms. Allocated memory was 235.9 MB in the beginning and 950.0 MB in the end (delta: 714.1 MB). Free memory was 171.9 MB in the beginning and 234.1 MB in the end (delta: -62.2 MB). Peak memory consumption was 651.9 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:32,571 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.97 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 102.2 MB in the beginning and 171.3 MB in the end (delta: -69.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.06 ms. Allocated memory is still 203.4 MB. Free memory was 171.3 MB in the beginning and 166.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1330.31 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 166.4 MB in the beginning and 173.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42421.07 ms. Allocated memory was 235.9 MB in the beginning and 950.0 MB in the end (delta: 714.1 MB). Free memory was 171.9 MB in the beginning and 234.1 MB in the end (delta: -62.2 MB). Peak memory consumption was 651.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L159] int pumpRunning = 0; [L160] int systemActive = 1; [L399] int waterLevel = 1; [L400] int methaneLevelCritical = 0; [L511] int cleanupTimeShifts = 4; [L802] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L584] int retValue_acc ; [L585] int tmp ; [L589] FCALL select_helpers() [L590] FCALL select_features() [L591] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L591] RET, EXPR valid_product() [L591] tmp = valid_product() [L593] COND TRUE \read(tmp) [L595] FCALL setup() [L596] CALL runTest() [L578] CALL test() [L84] int splverifierCounter ; [L85] int tmp ; [L86] int tmp___0 ; [L87] int tmp___1 ; [L88] int tmp___2 ; [L91] splverifierCounter = 0 [L93] COND TRUE 1 [L95] COND TRUE splverifierCounter < 4 [L101] tmp = __VERIFIER_nondet_int() [L103] COND TRUE \read(tmp) [L105] CALL waterRise() [L417] COND TRUE waterLevel < 2 [L418] waterLevel = waterLevel + 1 [L105] RET waterRise() [L111] tmp___0 = __VERIFIER_nondet_int() [L113] COND TRUE \read(tmp___0) [L115] CALL changeMethaneLevel() [L429] COND FALSE !(\read(methaneLevelCritical)) [L432] methaneLevelCritical = 1 [L115] RET changeMethaneLevel() [L121] tmp___2 = __VERIFIER_nondet_int() [L123] COND TRUE \read(tmp___2) [L138] CALL timeShift() [L167] COND FALSE !(\read(pumpRunning)) [L174] COND TRUE \read(systemActive) [L176] CALL processEnvironment() [L248] int tmp ; [L251] COND FALSE !(\read(pumpRunning)) [L266] CALL processEnvironment__wrappee__lowWaterSensor() [L222] int tmp ; [L225] COND FALSE !(\read(pumpRunning)) [L240] CALL processEnvironment__wrappee__highWaterSensor() [L196] int tmp ; [L199] COND TRUE ! pumpRunning [L201] CALL, EXPR isHighWaterLevel() [L345] int retValue_acc ; [L346] int tmp ; [L347] int tmp___0 ; [L351] CALL, EXPR isHighWaterSensorDry() [L479] int retValue_acc ; [L482] COND FALSE !(waterLevel < 2) [L486] retValue_acc = 0 [L487] return (retValue_acc); [L351] RET, EXPR isHighWaterSensorDry() [L351] tmp = isHighWaterSensorDry() [L353] COND FALSE !(\read(tmp)) [L356] tmp___0 = 1 [L358] retValue_acc = tmp___0 [L359] return (retValue_acc); [L201] RET, EXPR isHighWaterLevel() [L201] tmp = isHighWaterLevel() [L203] COND TRUE \read(tmp) [L205] CALL activatePump() [L276] pumpRunning = 1 [L205] RET activatePump() [L240] RET processEnvironment__wrappee__highWaterSensor() [L266] RET processEnvironment__wrappee__lowWaterSensor() [L176] RET processEnvironment() [L182] CALL __utac_acc__Specification1_spec__1() [L608] int tmp ; [L609] int tmp___0 ; [L613] CALL, EXPR isMethaneLevelCritical() [L438] int retValue_acc ; [L441] retValue_acc = methaneLevelCritical [L442] return (retValue_acc); [L613] RET, EXPR isMethaneLevelCritical() [L613] tmp = isMethaneLevelCritical() [L615] COND TRUE \read(tmp) [L617] CALL, EXPR isPumpRunning() [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); [L617] RET, EXPR isPumpRunning() [L617] tmp___0 = isPumpRunning() [L619] COND TRUE \read(tmp___0) [L621] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 655 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 34.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2183 SDtfs, 4078 SDslu, 3917 SDs, 0 SdLazy, 9143 SolverSat, 1332 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 308 GetRequests, 197 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2459occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1834 StatesRemovedByMinimization, 8 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...