/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_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 12:25:39,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 12:25:39,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 12:25:39,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 12:25:39,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 12:25:39,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 12:25:39,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 12:25:39,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 12:25:39,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 12:25:39,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 12:25:39,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 12:25:39,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 12:25:39,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 12:25:39,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 12:25:39,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 12:25:39,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 12:25:39,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 12:25:39,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 12:25:39,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 12:25:39,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 12:25:39,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 12:25:39,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 12:25:39,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 12:25:39,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 12:25:39,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 12:25:39,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 12:25:39,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 12:25:39,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 12:25:39,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 12:25:39,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 12:25:39,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 12:25:39,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 12:25:39,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 12:25:39,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 12:25:39,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 12:25:39,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 12:25:39,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 12:25:39,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 12:25:39,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 12:25:39,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 12:25:39,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 12:25:39,575 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 12:25:39,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 12:25:39,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 12:25:39,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 12:25:39,586 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 12:25:39,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 12:25:39,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 12:25:39,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 12:25:39,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 12:25:39,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 12:25:39,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 12:25:39,587 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 12:25:39,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 12:25:39,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 12:25:39,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 12:25:39,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 12:25:39,588 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 12:25:39,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 12:25:39,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 12:25:39,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 12:25:39,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 12:25:39,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 12:25:39,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 12:25:39,592 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 12:25:39,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 12:25:39,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 12:25:39,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 12:25:39,898 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 12:25:39,898 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 12:25:39,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-07-07 12:25:39,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cc8edee/3d012f6db6b24b88b1d9061d1b285dad/FLAGcee309840 [2020-07-07 12:25:40,522 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 12:25:40,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-07-07 12:25:40,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cc8edee/3d012f6db6b24b88b1d9061d1b285dad/FLAGcee309840 [2020-07-07 12:25:40,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cc8edee/3d012f6db6b24b88b1d9061d1b285dad [2020-07-07 12:25:40,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 12:25:40,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 12:25:40,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:40,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 12:25:40,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 12:25:40,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:40" (1/1) ... [2020-07-07 12:25:40,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78645f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:40, skipping insertion in model container [2020-07-07 12:25:40,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 12:25:40" (1/1) ... [2020-07-07 12:25:40,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 12:25:40,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 12:25:41,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:41,430 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 12:25:41,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 12:25:41,575 INFO L208 MainTranslator]: Completed translation [2020-07-07 12:25:41,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41 WrapperNode [2020-07-07 12:25:41,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 12:25:41,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 12:25:41,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 12:25:41,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 12:25:41,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (1/1) ... [2020-07-07 12:25:41,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (1/1) ... [2020-07-07 12:25:41,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (1/1) ... [2020-07-07 12:25:41,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (1/1) ... [2020-07-07 12:25:41,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (1/1) ... [2020-07-07 12:25:41,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (1/1) ... [2020-07-07 12:25:41,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (1/1) ... [2020-07-07 12:25:41,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 12:25:41,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 12:25:41,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 12:25:41,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 12:25:41,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (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 12:25:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 12:25:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 12:25:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 12:25:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 12:25:41,733 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 12:25:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 12:25:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 12:25:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 12:25:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 12:25:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-07 12:25:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 12:25:41,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 12:25:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 12:25:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 12:25:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 12:25:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 12:25:41,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 12:25:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 12:25:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 12:25:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-07 12:25:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-07 12:25:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 12:25:41,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 12:25:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 12:25:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 12:25:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 12:25:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 12:25:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 12:25:41,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 12:25:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 12:25:41,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 12:25:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 12:25:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 12:25:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 12:25:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 12:25:41,739 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 12:25:41,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 12:25:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 12:25:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 12:25:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 12:25:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 12:25:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 12:25:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 12:25:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 12:25:41,740 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 12:25:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 12:25:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-07 12:25:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 12:25:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 12:25:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 12:25:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 12:25:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 12:25:41,741 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 12:25:41,742 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 12:25:41,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 12:25:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 12:25:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 12:25:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 12:25:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 12:25:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 12:25:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 12:25:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 12:25:41,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 12:25:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 12:25:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 12:25:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 12:25:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 12:25:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 12:25:41,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 12:25:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 12:25:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 12:25:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 12:25:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 12:25:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 12:25:41,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 12:25:42,899 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 12:25:42,900 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 12:25:42,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:42 BoogieIcfgContainer [2020-07-07 12:25:42,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 12:25:42,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 12:25:42,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 12:25:42,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 12:25:42,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 12:25:40" (1/3) ... [2020-07-07 12:25:42,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59acb2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:42, skipping insertion in model container [2020-07-07 12:25:42,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 12:25:41" (2/3) ... [2020-07-07 12:25:42,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59acb2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 12:25:42, skipping insertion in model container [2020-07-07 12:25:42,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 12:25:42" (3/3) ... [2020-07-07 12:25:42,915 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-07-07 12:25:42,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 12:25:42,936 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 12:25:42,951 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 12:25:42,977 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 12:25:42,978 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 12:25:42,978 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 12:25:42,978 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 12:25:42,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 12:25:42,979 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 12:25:42,979 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 12:25:42,979 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 12:25:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-07-07 12:25:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-07 12:25:43,023 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:43,025 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 12:25:43,025 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:43,032 INFO L82 PathProgramCache]: Analyzing trace with hash 254159831, now seen corresponding path program 1 times [2020-07-07 12:25:43,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:43,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114814974] [2020-07-07 12:25:43,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,802 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:25:44,054 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:44,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114814974] [2020-07-07 12:25:44,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:44,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 12:25:44,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828671809] [2020-07-07 12:25:44,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 12:25:44,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:44,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 12:25:44,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 12:25:44,104 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 3 states. [2020-07-07 12:25:45,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:45,527 INFO L93 Difference]: Finished difference Result 512 states and 609 transitions. [2020-07-07 12:25:45,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 12:25:45,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-07-07 12:25:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:45,547 INFO L225 Difference]: With dead ends: 512 [2020-07-07 12:25:45,547 INFO L226 Difference]: Without dead ends: 315 [2020-07-07 12:25:45,553 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 12:25:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-07-07 12:25:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 271. [2020-07-07 12:25:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-07-07 12:25:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 295 transitions. [2020-07-07 12:25:45,718 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 295 transitions. Word has length 142 [2020-07-07 12:25:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:45,720 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 295 transitions. [2020-07-07 12:25:45,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 12:25:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 295 transitions. [2020-07-07 12:25:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-07 12:25:45,732 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:45,732 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 12:25:45,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 12:25:45,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:45,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:45,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1230709371, now seen corresponding path program 1 times [2020-07-07 12:25:45,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:45,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963813813] [2020-07-07 12:25:45,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,116 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:46,256 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 12:25:46,256 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:46,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963813813] [2020-07-07 12:25:46,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:46,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 12:25:46,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418696368] [2020-07-07 12:25:46,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 12:25:46,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:46,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 12:25:46,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 12:25:46,259 INFO L87 Difference]: Start difference. First operand 271 states and 295 transitions. Second operand 4 states. [2020-07-07 12:25:46,860 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:47,918 INFO L93 Difference]: Finished difference Result 419 states and 472 transitions. [2020-07-07 12:25:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 12:25:47,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-07-07 12:25:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:47,925 INFO L225 Difference]: With dead ends: 419 [2020-07-07 12:25:47,925 INFO L226 Difference]: Without dead ends: 298 [2020-07-07 12:25:47,927 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 12:25:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-07-07 12:25:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 261. [2020-07-07 12:25:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-07-07 12:25:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 282 transitions. [2020-07-07 12:25:48,012 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 282 transitions. Word has length 143 [2020-07-07 12:25:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:48,012 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 282 transitions. [2020-07-07 12:25:48,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 12:25:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 282 transitions. [2020-07-07 12:25:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-07 12:25:48,015 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:48,016 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] [2020-07-07 12:25:48,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 12:25:48,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash -11881279, now seen corresponding path program 1 times [2020-07-07 12:25:48,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:48,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008549187] [2020-07-07 12:25:48,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,385 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:48,521 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 12:25:48,521 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:48,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008549187] [2020-07-07 12:25:48,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:48,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:25:48,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891727500] [2020-07-07 12:25:48,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:25:48,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:48,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:25:48,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:25:48,524 INFO L87 Difference]: Start difference. First operand 261 states and 282 transitions. Second operand 10 states. [2020-07-07 12:25:48,990 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:49,298 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:25:49,576 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-07-07 12:25:49,810 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:50,058 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:50,290 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:51,218 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:53,596 INFO L93 Difference]: Finished difference Result 718 states and 836 transitions. [2020-07-07 12:25:53,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:53,597 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-07-07 12:25:53,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:53,609 INFO L225 Difference]: With dead ends: 718 [2020-07-07 12:25:53,609 INFO L226 Difference]: Without dead ends: 567 [2020-07-07 12:25:53,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:25:53,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-07-07 12:25:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 472. [2020-07-07 12:25:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-07-07 12:25:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 528 transitions. [2020-07-07 12:25:53,822 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 528 transitions. Word has length 156 [2020-07-07 12:25:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:53,823 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 528 transitions. [2020-07-07 12:25:53,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:25:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 528 transitions. [2020-07-07 12:25:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-07 12:25:53,826 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:53,826 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 12:25:53,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 12:25:53,827 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:53,827 INFO L82 PathProgramCache]: Analyzing trace with hash -409466612, now seen corresponding path program 1 times [2020-07-07 12:25:53,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:53,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963946424] [2020-07-07 12:25:53,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,111 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:25:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:25:54,236 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 12:25:54,236 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:25:54,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963946424] [2020-07-07 12:25:54,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:25:54,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 12:25:54,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717260662] [2020-07-07 12:25:54,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 12:25:54,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:25:54,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 12:25:54,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 12:25:54,239 INFO L87 Difference]: Start difference. First operand 472 states and 528 transitions. Second operand 9 states. [2020-07-07 12:25:54,691 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:56,121 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:56,387 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:56,746 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:57,085 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:25:57,332 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:25:57,575 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:57,818 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:25:58,314 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:25:59,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:25:59,487 INFO L93 Difference]: Finished difference Result 1314 states and 1572 transitions. [2020-07-07 12:25:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 12:25:59,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-07-07 12:25:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:25:59,495 INFO L225 Difference]: With dead ends: 1314 [2020-07-07 12:25:59,495 INFO L226 Difference]: Without dead ends: 952 [2020-07-07 12:25:59,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-07-07 12:25:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-07-07 12:25:59,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 795. [2020-07-07 12:25:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-07-07 12:25:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 902 transitions. [2020-07-07 12:25:59,748 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 902 transitions. Word has length 161 [2020-07-07 12:25:59,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:25:59,749 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 902 transitions. [2020-07-07 12:25:59,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 12:25:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 902 transitions. [2020-07-07 12:25:59,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-07 12:25:59,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:25:59,753 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 12:25:59,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 12:25:59,753 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:25:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:25:59,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1234625458, now seen corresponding path program 1 times [2020-07-07 12:25:59,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:25:59,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727589709] [2020-07-07 12:25:59,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:25:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,126 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:00,296 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 12:26:00,297 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:00,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727589709] [2020-07-07 12:26:00,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:00,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 12:26:00,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363299508] [2020-07-07 12:26:00,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 12:26:00,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:00,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 12:26:00,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 12:26:00,299 INFO L87 Difference]: Start difference. First operand 795 states and 902 transitions. Second operand 10 states. [2020-07-07 12:26:00,740 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:01,970 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:02,276 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:02,531 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:02,801 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 12:26:03,052 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:03,687 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:03,919 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:04,295 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:05,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:05,297 INFO L93 Difference]: Finished difference Result 2058 states and 2533 transitions. [2020-07-07 12:26:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 12:26:05,298 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-07-07 12:26:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:05,308 INFO L225 Difference]: With dead ends: 2058 [2020-07-07 12:26:05,309 INFO L226 Difference]: Without dead ends: 1373 [2020-07-07 12:26:05,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-07-07 12:26:05,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-07-07 12:26:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1105. [2020-07-07 12:26:05,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2020-07-07 12:26:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1273 transitions. [2020-07-07 12:26:05,648 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1273 transitions. Word has length 166 [2020-07-07 12:26:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:05,648 INFO L479 AbstractCegarLoop]: Abstraction has 1105 states and 1273 transitions. [2020-07-07 12:26:05,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 12:26:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1273 transitions. [2020-07-07 12:26:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-07 12:26:05,653 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:05,653 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] [2020-07-07 12:26:05,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 12:26:05,653 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:05,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:05,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1793051015, now seen corresponding path program 1 times [2020-07-07 12:26:05,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:05,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359191797] [2020-07-07 12:26:05,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,911 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:06,098 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 12:26:06,099 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:06,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359191797] [2020-07-07 12:26:06,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:06,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 12:26:06,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395222017] [2020-07-07 12:26:06,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 12:26:06,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:06,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 12:26:06,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 12:26:06,102 INFO L87 Difference]: Start difference. First operand 1105 states and 1273 transitions. Second operand 11 states. [2020-07-07 12:26:07,504 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:07,821 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:08,150 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-07-07 12:26:08,404 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:08,680 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:08,918 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:10,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:10,666 INFO L93 Difference]: Finished difference Result 2717 states and 3403 transitions. [2020-07-07 12:26:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 12:26:10,666 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2020-07-07 12:26:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:10,678 INFO L225 Difference]: With dead ends: 2717 [2020-07-07 12:26:10,678 INFO L226 Difference]: Without dead ends: 1722 [2020-07-07 12:26:10,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-07-07 12:26:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-07-07 12:26:10,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1143. [2020-07-07 12:26:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-07-07 12:26:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1313 transitions. [2020-07-07 12:26:10,997 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1313 transitions. Word has length 199 [2020-07-07 12:26:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:10,997 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1313 transitions. [2020-07-07 12:26:10,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 12:26:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1313 transitions. [2020-07-07 12:26:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-07 12:26:11,002 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:11,002 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] [2020-07-07 12:26:11,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 12:26:11,003 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:11,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:11,003 INFO L82 PathProgramCache]: Analyzing trace with hash 819180839, now seen corresponding path program 1 times [2020-07-07 12:26:11,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:11,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251483536] [2020-07-07 12:26:11,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,279 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:11,603 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 12:26:11,603 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:11,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251483536] [2020-07-07 12:26:11,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:11,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 12:26:11,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159383472] [2020-07-07 12:26:11,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 12:26:11,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:11,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 12:26:11,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-07-07 12:26:11,606 INFO L87 Difference]: Start difference. First operand 1143 states and 1313 transitions. Second operand 14 states. [2020-07-07 12:26:12,133 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 12:26:12,376 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 12:26:12,634 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:12,876 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:13,108 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:14,067 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:14,375 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:14,648 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:14,929 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 12:26:15,178 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 12:26:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:17,408 INFO L93 Difference]: Finished difference Result 2799 states and 3554 transitions. [2020-07-07 12:26:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 12:26:17,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 199 [2020-07-07 12:26:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:17,419 INFO L225 Difference]: With dead ends: 2799 [2020-07-07 12:26:17,419 INFO L226 Difference]: Without dead ends: 1766 [2020-07-07 12:26:17,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-07-07 12:26:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2020-07-07 12:26:17,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1167. [2020-07-07 12:26:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-07-07 12:26:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1337 transitions. [2020-07-07 12:26:17,942 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1337 transitions. Word has length 199 [2020-07-07 12:26:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:17,942 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1337 transitions. [2020-07-07 12:26:17,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 12:26:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1337 transitions. [2020-07-07 12:26:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-07 12:26:17,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:17,947 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] [2020-07-07 12:26:17,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 12:26:17,948 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:17,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:17,948 INFO L82 PathProgramCache]: Analyzing trace with hash -821113142, now seen corresponding path program 1 times [2020-07-07 12:26:17,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:17,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462827446] [2020-07-07 12:26:17,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,231 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 12:26:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:26:18,401 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 12:26:18,401 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:18,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462827446] [2020-07-07 12:26:18,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:26:18,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 12:26:18,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256064995] [2020-07-07 12:26:18,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 12:26:18,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 12:26:18,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 12:26:18,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 12:26:18,404 INFO L87 Difference]: Start difference. First operand 1167 states and 1337 transitions. Second operand 8 states. [2020-07-07 12:26:18,922 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:19,502 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 12:26:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:26:23,736 INFO L93 Difference]: Finished difference Result 4329 states and 5547 transitions. [2020-07-07 12:26:23,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-07 12:26:23,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-07-07 12:26:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:26:23,756 INFO L225 Difference]: With dead ends: 4329 [2020-07-07 12:26:23,756 INFO L226 Difference]: Without dead ends: 3272 [2020-07-07 12:26:23,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-07-07 12:26:23,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-07-07 12:26:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 2347. [2020-07-07 12:26:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2347 states. [2020-07-07 12:26:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 2717 transitions. [2020-07-07 12:26:24,830 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 2717 transitions. Word has length 199 [2020-07-07 12:26:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:26:24,830 INFO L479 AbstractCegarLoop]: Abstraction has 2347 states and 2717 transitions. [2020-07-07 12:26:24,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 12:26:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 2717 transitions. [2020-07-07 12:26:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-07-07 12:26:24,834 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:26:24,835 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] [2020-07-07 12:26:24,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 12:26:24,835 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:26:24,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:26:24,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1861424498, now seen corresponding path program 1 times [2020-07-07 12:26:24,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 12:26:24,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091296263] [2020-07-07 12:26:24,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:26:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:26:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 12:26:25,200 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 12:26:25,201 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 12:26:25,201 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 12:26:25,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 12:26:25,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 12:26:25 BoogieIcfgContainer [2020-07-07 12:26:25,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 12:26:25,245 INFO L168 Benchmark]: Toolchain (without parser) took 44395.87 ms. Allocated memory was 135.3 MB in the beginning and 1.1 GB in the end (delta: 983.0 MB). Free memory was 99.0 MB in the beginning and 357.8 MB in the end (delta: -258.8 MB). Peak memory consumption was 724.3 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:25,252 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 135.3 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 12:26:25,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.28 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 98.8 MB in the beginning and 168.1 MB in the end (delta: -69.4 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:25,257 INFO L168 Benchmark]: Boogie Preprocessor took 97.60 ms. Allocated memory is still 199.8 MB. Free memory was 168.1 MB in the beginning and 163.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:25,259 INFO L168 Benchmark]: RCFGBuilder took 1231.94 ms. Allocated memory was 199.8 MB in the beginning and 227.0 MB in the end (delta: 27.3 MB). Free memory was 163.7 MB in the beginning and 171.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:25,260 INFO L168 Benchmark]: TraceAbstraction took 42333.78 ms. Allocated memory was 227.0 MB in the beginning and 1.1 GB in the end (delta: 891.3 MB). Free memory was 169.9 MB in the beginning and 357.8 MB in the end (delta: -187.9 MB). Peak memory consumption was 703.4 MB. Max. memory is 7.1 GB. [2020-07-07 12:26:25,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 135.3 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 727.28 ms. Allocated memory was 135.3 MB in the beginning and 199.8 MB in the end (delta: 64.5 MB). Free memory was 98.8 MB in the beginning and 168.1 MB in the end (delta: -69.4 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.60 ms. Allocated memory is still 199.8 MB. Free memory was 168.1 MB in the beginning and 163.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1231.94 ms. Allocated memory was 199.8 MB in the beginning and 227.0 MB in the end (delta: 27.3 MB). Free memory was 163.7 MB in the beginning and 171.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42333.78 ms. Allocated memory was 227.0 MB in the beginning and 1.1 GB in the end (delta: 891.3 MB). Free memory was 169.9 MB in the beginning and 357.8 MB in the end (delta: -187.9 MB). Peak memory consumption was 703.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 383]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L458] int cleanupTimeShifts = 4; [L752] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int retValue_acc ; [L535] int tmp ; [L539] FCALL select_helpers() [L540] FCALL select_features() [L541] CALL, EXPR valid_product() [L975] int retValue_acc ; [L978] retValue_acc = 1 [L979] return (retValue_acc); [L541] RET, EXPR valid_product() [L541] tmp = valid_product() [L543] COND TRUE \read(tmp) [L545] FCALL setup() [L546] CALL runTest() [L525] CALL test() [L390] int splverifierCounter ; [L391] int tmp ; [L392] int tmp___0 ; [L393] int tmp___1 ; [L394] int tmp___2 ; [L397] splverifierCounter = 0 [L399] COND TRUE 1 [L401] COND TRUE splverifierCounter < 4 [L407] tmp = __VERIFIER_nondet_int() [L409] COND TRUE \read(tmp) [L411] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L411] RET waterRise() [L417] tmp___0 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp___0) [L421] CALL changeMethaneLevel() [L78] COND FALSE !(\read(methaneLevelCritical)) [L81] methaneLevelCritical = 1 [L421] RET changeMethaneLevel() [L427] tmp___2 = __VERIFIER_nondet_int() [L429] COND TRUE \read(tmp___2) [L431] CALL startSystem() [L374] systemActive = 1 [L431] RET startSystem() [L446] CALL timeShift() [L166] COND FALSE !(\read(pumpRunning)) [L173] COND TRUE \read(systemActive) [L175] CALL processEnvironment() [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L239] CALL processEnvironment__wrappee__highWaterSensor() [L195] int tmp ; [L198] COND TRUE ! pumpRunning [L200] CALL, EXPR isHighWaterLevel() [L318] int retValue_acc ; [L319] int tmp ; [L320] int tmp___0 ; [L324] CALL, EXPR isHighWaterSensorDry() [L128] int retValue_acc ; [L131] COND FALSE !(waterLevel < 2) [L135] retValue_acc = 0 [L136] return (retValue_acc); [L324] RET, EXPR isHighWaterSensorDry() [L324] tmp = isHighWaterSensorDry() [L326] COND FALSE !(\read(tmp)) [L329] tmp___0 = 1 [L331] retValue_acc = tmp___0 [L332] return (retValue_acc); [L200] RET, EXPR isHighWaterLevel() [L200] tmp = isHighWaterLevel() [L202] COND TRUE \read(tmp) [L204] CALL activatePump() [L249] pumpRunning = 1 [L204] RET activatePump() [L239] RET processEnvironment__wrappee__highWaterSensor() [L175] RET processEnvironment() [L181] CALL __utac_acc__Specification1_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L563] RET, EXPR isMethaneLevelCritical() [L563] tmp = isMethaneLevelCritical() [L565] COND TRUE \read(tmp) [L567] CALL, EXPR isPumpRunning() [L273] int retValue_acc ; [L276] retValue_acc = pumpRunning [L277] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) [L571] CALL __automaton_fail() [L383] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 647 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2103 SDtfs, 4648 SDslu, 4298 SDs, 0 SdLazy, 9415 SolverSat, 1515 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 333 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2347occurred 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: 2.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 2704 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...