/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:25:50,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:25:50,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:25:50,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:25:50,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:25:50,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:25:50,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:25:50,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:25:50,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:25:50,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:25:50,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:25:50,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:25:50,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:25:50,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:25:50,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:25:50,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:25:50,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:25:50,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:25:50,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:25:50,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:25:50,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:25:50,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:25:50,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:25:50,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:25:50,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:25:50,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:25:50,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:25:50,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:25:50,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:25:50,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:25:50,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:25:50,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:25:50,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:25:50,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:25:50,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:25:50,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:25:50,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:25:50,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:25:50,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:25:50,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:25:50,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:25:50,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:25:50,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:25:50,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:25:50,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:25:50,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:25:50,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:25:50,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:25:50,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:25:50,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:25:50,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:25:50,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:25:50,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:25:50,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:25:50,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:25:50,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:25:50,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:25:50,155 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:25:50,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:25:50,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:25:50,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:25:50,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:25:50,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:25:50,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:25:50,156 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:25:50,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:25:50,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:25:50,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:25:50,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:25:50,618 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:25:50,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-09-04 15:25:50,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49a47228/02d14b6ddd9a42a8b379510b0e08fbff/FLAGd47d94ba2 [2020-09-04 15:25:51,340 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:25:51,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-09-04 15:25:51,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49a47228/02d14b6ddd9a42a8b379510b0e08fbff/FLAGd47d94ba2 [2020-09-04 15:25:51,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49a47228/02d14b6ddd9a42a8b379510b0e08fbff [2020-09-04 15:25:51,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:25:51,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:25:51,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:25:51,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:25:51,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:25:51,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:25:51" (1/1) ... [2020-09-04 15:25:51,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d3ce57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:51, skipping insertion in model container [2020-09-04 15:25:51,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:25:51" (1/1) ... [2020-09-04 15:25:51,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:25:51,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:25:52,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:25:52,062 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:25:52,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:25:52,367 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:25:52,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52 WrapperNode [2020-09-04 15:25:52,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:25:52,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:25:52,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:25:52,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:25:52,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (1/1) ... [2020-09-04 15:25:52,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (1/1) ... [2020-09-04 15:25:52,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (1/1) ... [2020-09-04 15:25:52,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (1/1) ... [2020-09-04 15:25:52,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (1/1) ... [2020-09-04 15:25:52,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (1/1) ... [2020-09-04 15:25:52,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (1/1) ... [2020-09-04 15:25:52,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:25:52,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:25:52,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:25:52,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:25:52,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:25:52,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:25:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:25:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:25:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:25:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:25:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:25:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:25:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:25:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-04 15:25:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:25:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:25:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:25:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:25:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:25:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:25:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 15:25:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:25:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:25:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:25:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:25:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:25:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:25:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:25:52,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:25:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:25:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:25:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:25:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:25:52,571 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:25:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:25:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:25:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:25:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:25:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:25:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:25:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:25:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:25:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 15:25:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:25:52,573 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:25:52,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:25:52,574 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:25:52,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:25:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:25:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:25:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:25:52,574 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:25:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:25:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:25:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:25:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:25:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:25:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:25:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:25:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:25:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:25:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:25:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 15:25:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:25:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:25:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:25:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:25:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-04 15:25:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:25:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:25:52,577 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:25:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 15:25:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 15:25:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-04 15:25:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:25:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:25:52,578 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:25:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:25:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:25:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:25:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:25:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:25:52,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:25:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:25:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:25:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:25:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:25:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:25:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:25:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:25:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:25:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:25:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:25:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:25:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:25:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:25:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:25:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:25:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:25:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:25:52,582 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:25:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:25:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:25:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:25:52,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:25:53,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:25:53,815 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:25:53,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:25:53 BoogieIcfgContainer [2020-09-04 15:25:53,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:25:53,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:25:53,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:25:53,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:25:53,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:25:51" (1/3) ... [2020-09-04 15:25:53,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254ff107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:25:53, skipping insertion in model container [2020-09-04 15:25:53,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:25:52" (2/3) ... [2020-09-04 15:25:53,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254ff107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:25:53, skipping insertion in model container [2020-09-04 15:25:53,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:25:53" (3/3) ... [2020-09-04 15:25:53,832 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2020-09-04 15:25:53,844 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:25:53,855 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:25:53,878 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:25:53,907 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:25:53,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:25:53,908 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:25:53,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:25:53,908 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:25:53,908 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:25:53,908 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:25:53,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:25:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states. [2020-09-04 15:25:53,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-04 15:25:53,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:53,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:25:53,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash 179280132, now seen corresponding path program 1 times [2020-09-04 15:25:53,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:53,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155013047] [2020-09-04 15:25:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:54,075 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:54,828 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:25:54,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:25:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:25:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:54,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:25:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:54,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:25:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:54,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:25:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:25:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:54,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:25:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:54,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:25:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:25:55,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155013047] [2020-09-04 15:25:55,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:25:55,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:25:55,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235024800] [2020-09-04 15:25:55,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:25:55,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:25:55,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:25:55,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:25:55,056 INFO L87 Difference]: Start difference. First operand 350 states. Second operand 3 states. [2020-09-04 15:25:56,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:25:56,546 INFO L93 Difference]: Finished difference Result 570 states and 673 transitions. [2020-09-04 15:25:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:25:56,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-04 15:25:56,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:25:56,586 INFO L225 Difference]: With dead ends: 570 [2020-09-04 15:25:56,586 INFO L226 Difference]: Without dead ends: 345 [2020-09-04 15:25:56,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:25:56,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-09-04 15:25:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 299. [2020-09-04 15:25:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-09-04 15:25:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 326 transitions. [2020-09-04 15:25:56,790 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 326 transitions. Word has length 153 [2020-09-04 15:25:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:25:56,791 INFO L479 AbstractCegarLoop]: Abstraction has 299 states and 326 transitions. [2020-09-04 15:25:56,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:25:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 326 transitions. [2020-09-04 15:25:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 15:25:56,797 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:56,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:25:56,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:25:56,798 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:56,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:56,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1644789212, now seen corresponding path program 1 times [2020-09-04 15:25:56,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:56,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164615791] [2020-09-04 15:25:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:56,802 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,195 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:25:57,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:25:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:25:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:25:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:25:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:25:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-04 15:25:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:25:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:25:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:25:57,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164615791] [2020-09-04 15:25:57,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:25:57,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:25:57,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290444973] [2020-09-04 15:25:57,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:25:57,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:25:57,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:25:57,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:25:57,284 INFO L87 Difference]: Start difference. First operand 299 states and 326 transitions. Second operand 4 states. [2020-09-04 15:25:57,980 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:25:59,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:25:59,269 INFO L93 Difference]: Finished difference Result 477 states and 536 transitions. [2020-09-04 15:25:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:25:59,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-04 15:25:59,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:25:59,275 INFO L225 Difference]: With dead ends: 477 [2020-09-04 15:25:59,275 INFO L226 Difference]: Without dead ends: 328 [2020-09-04 15:25:59,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:25:59,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-09-04 15:25:59,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 289. [2020-09-04 15:25:59,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-09-04 15:25:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 313 transitions. [2020-09-04 15:25:59,402 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 313 transitions. Word has length 154 [2020-09-04 15:25:59,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:25:59,403 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 313 transitions. [2020-09-04 15:25:59,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:25:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 313 transitions. [2020-09-04 15:25:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:25:59,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:25:59,406 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] [2020-09-04 15:25:59,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:25:59,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:25:59,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:25:59,407 INFO L82 PathProgramCache]: Analyzing trace with hash -205094291, now seen corresponding path program 1 times [2020-09-04 15:25:59,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:25:59,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050993375] [2020-09-04 15:25:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:25:59,411 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:25:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,749 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:25:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:25:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:25:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:25:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:25:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:25:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:25:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:25:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:25:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:25:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:25:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:25:59,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050993375] [2020-09-04 15:25:59,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:25:59,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:25:59,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810538476] [2020-09-04 15:25:59,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:25:59,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:25:59,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:25:59,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:25:59,894 INFO L87 Difference]: Start difference. First operand 289 states and 313 transitions. Second operand 10 states. [2020-09-04 15:26:00,485 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:26:00,867 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:26:01,172 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:26:01,474 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:01,794 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:26:02,086 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:03,082 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:26:06,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:26:06,235 INFO L93 Difference]: Finished difference Result 817 states and 945 transitions. [2020-09-04 15:26:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:26:06,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:26:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:26:06,242 INFO L225 Difference]: With dead ends: 817 [2020-09-04 15:26:06,242 INFO L226 Difference]: Without dead ends: 638 [2020-09-04 15:26:06,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:26:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-04 15:26:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 539. [2020-09-04 15:26:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-09-04 15:26:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 602 transitions. [2020-09-04 15:26:06,456 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 602 transitions. Word has length 167 [2020-09-04 15:26:06,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:26:06,457 INFO L479 AbstractCegarLoop]: Abstraction has 539 states and 602 transitions. [2020-09-04 15:26:06,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:26:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 602 transitions. [2020-09-04 15:26:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:26:06,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:26:06,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:26:06,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:26:06,462 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:26:06,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:26:06,462 INFO L82 PathProgramCache]: Analyzing trace with hash 935759642, now seen corresponding path program 1 times [2020-09-04 15:26:06,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:26:06,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754354785] [2020-09-04 15:26:06,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:26:06,465 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:26:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,822 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:26:06,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:26:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:26:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:26:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:26:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:26:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:26:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:26:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-04 15:26:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 15:26:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:26:07,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754354785] [2020-09-04 15:26:07,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:26:07,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:26:07,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408625759] [2020-09-04 15:26:07,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:26:07,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:26:07,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:26:07,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:26:07,023 INFO L87 Difference]: Start difference. First operand 539 states and 602 transitions. Second operand 9 states. [2020-09-04 15:26:07,500 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:26:09,607 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:09,965 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:26:10,342 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:10,736 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:26:11,051 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:26:11,341 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:11,671 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:26:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:26:12,993 INFO L93 Difference]: Finished difference Result 1487 states and 1773 transitions. [2020-09-04 15:26:12,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:26:12,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 172 [2020-09-04 15:26:12,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:26:13,006 INFO L225 Difference]: With dead ends: 1487 [2020-09-04 15:26:13,006 INFO L226 Difference]: Without dead ends: 1058 [2020-09-04 15:26:13,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 15:26:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2020-09-04 15:26:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 951. [2020-09-04 15:26:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-09-04 15:26:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1085 transitions. [2020-09-04 15:26:13,347 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1085 transitions. Word has length 172 [2020-09-04 15:26:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:26:13,347 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1085 transitions. [2020-09-04 15:26:13,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:26:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1085 transitions. [2020-09-04 15:26:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:26:13,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:26:13,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:26:13,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:26:13,354 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:26:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:26:13,354 INFO L82 PathProgramCache]: Analyzing trace with hash -455034656, now seen corresponding path program 1 times [2020-09-04 15:26:13,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:26:13,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013967676] [2020-09-04 15:26:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:26:13,357 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:26:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,708 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:26:13,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:26:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:26:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:26:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:26:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:26:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:26:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:26:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:26:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-04 15:26:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-09-04 15:26:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:26:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:26:13,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013967676] [2020-09-04 15:26:13,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:26:13,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:26:13,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084772548] [2020-09-04 15:26:13,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:26:13,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:26:13,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:26:13,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:26:13,967 INFO L87 Difference]: Start difference. First operand 951 states and 1085 transitions. Second operand 6 states. [2020-09-04 15:26:14,618 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:26:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:26:17,052 INFO L93 Difference]: Finished difference Result 2131 states and 2544 transitions. [2020-09-04 15:26:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 15:26:17,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2020-09-04 15:26:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:26:17,060 INFO L225 Difference]: With dead ends: 2131 [2020-09-04 15:26:17,060 INFO L226 Difference]: Without dead ends: 1290 [2020-09-04 15:26:17,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:26:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2020-09-04 15:26:17,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1190. [2020-09-04 15:26:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-04 15:26:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1353 transitions. [2020-09-04 15:26:17,447 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1353 transitions. Word has length 177 [2020-09-04 15:26:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:26:17,448 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1353 transitions. [2020-09-04 15:26:17,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:26:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1353 transitions. [2020-09-04 15:26:17,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-04 15:26:17,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:26:17,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:26:17,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:26:17,452 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:26:17,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:26:17,452 INFO L82 PathProgramCache]: Analyzing trace with hash 403214129, now seen corresponding path program 1 times [2020-09-04 15:26:17,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:26:17,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673111309] [2020-09-04 15:26:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:26:17,455 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:26:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:26:17,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:26:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:26:17,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:26:17,781 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:26:17,781 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:26:17,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:26:17,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:26:17 BoogieIcfgContainer [2020-09-04 15:26:17,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:26:17,816 INFO L168 Benchmark]: Toolchain (without parser) took 26237.65 ms. Allocated memory was 140.5 MB in the beginning and 648.0 MB in the end (delta: 507.5 MB). Free memory was 102.8 MB in the beginning and 208.6 MB in the end (delta: -105.8 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:17,817 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:26:17,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 789.44 ms. Allocated memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: 66.1 MB). Free memory was 102.6 MB in the beginning and 175.4 MB in the end (delta: -72.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:17,819 INFO L168 Benchmark]: Boogie Preprocessor took 100.65 ms. Allocated memory is still 206.6 MB. Free memory was 175.4 MB in the beginning and 170.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:17,819 INFO L168 Benchmark]: RCFGBuilder took 1352.85 ms. Allocated memory was 206.6 MB in the beginning and 236.5 MB in the end (delta: 29.9 MB). Free memory was 170.7 MB in the beginning and 170.6 MB in the end (delta: 84.8 kB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:17,820 INFO L168 Benchmark]: TraceAbstraction took 23988.81 ms. Allocated memory was 236.5 MB in the beginning and 648.0 MB in the end (delta: 411.6 MB). Free memory was 170.6 MB in the beginning and 208.6 MB in the end (delta: -38.0 MB). Peak memory consumption was 373.6 MB. Max. memory is 7.1 GB. [2020-09-04 15:26:17,824 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 789.44 ms. Allocated memory was 140.5 MB in the beginning and 206.6 MB in the end (delta: 66.1 MB). Free memory was 102.6 MB in the beginning and 175.4 MB in the end (delta: -72.8 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.65 ms. Allocated memory is still 206.6 MB. Free memory was 175.4 MB in the beginning and 170.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1352.85 ms. Allocated memory was 206.6 MB in the beginning and 236.5 MB in the end (delta: 29.9 MB). Free memory was 170.7 MB in the beginning and 170.6 MB in the end (delta: 84.8 kB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23988.81 ms. Allocated memory was 236.5 MB in the beginning and 648.0 MB in the end (delta: 411.6 MB). Free memory was 170.6 MB in the beginning and 208.6 MB in the end (delta: -38.0 MB). Peak memory consumption was 373.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 769]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L124] int pumpRunning = 0; [L125] int systemActive = 1; [L568] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L812] int waterLevel = 1; [L813] int methaneLevelCritical = 0; [L915] int cleanupTimeShifts = 4; [L988] int retValue_acc ; [L989] int tmp ; [L993] FCALL select_helpers() [L994] FCALL select_features() [L995] CALL, EXPR valid_product() [L803] int retValue_acc ; [L806] retValue_acc = 1 [L807] return (retValue_acc); [L995] RET, EXPR valid_product() [L995] tmp = valid_product() [L997] COND TRUE \read(tmp) [L999] FCALL setup() [L1000] CALL runTest() [L982] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L830] COND TRUE waterLevel < 2 [L831] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___1) [L96] CALL stopSystem() [L343] COND FALSE !(\read(pumpRunning)) [L350] systemActive = 0 [L96] RET stopSystem() [L103] CALL timeShift() [L132] COND FALSE !(\read(pumpRunning)) [L139] COND FALSE !(\read(systemActive)) [L147] CALL __utac_acc__Specification3_spec__1() [L366] int tmp ; [L367] int tmp___0 ; [L368] int tmp___1 ; [L372] CALL, EXPR isMethaneLevelCritical() [L851] int retValue_acc ; [L854] retValue_acc = methaneLevelCritical [L855] return (retValue_acc); [L372] RET, EXPR isMethaneLevelCritical() [L372] tmp = isMethaneLevelCritical() [L374] COND FALSE !(\read(tmp)) [L378] CALL, EXPR getWaterLevel() [L883] int retValue_acc ; [L886] retValue_acc = waterLevel [L887] return (retValue_acc); [L378] RET, EXPR getWaterLevel() [L378] tmp___0 = getWaterLevel() [L380] COND TRUE tmp___0 == 2 [L382] CALL, EXPR isPumpRunning() [L257] int retValue_acc ; [L260] retValue_acc = pumpRunning [L261] return (retValue_acc); [L382] RET, EXPR isPumpRunning() [L382] tmp___1 = isPumpRunning() [L384] COND FALSE !(\read(tmp___1)) [L388] CALL __automaton_fail() [L769] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 662 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1426 SDtfs, 2833 SDslu, 1635 SDs, 0 SdLazy, 4115 SolverSat, 1019 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1190occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 391 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...