/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 18:56:54,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 18:56:54,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 18:56:54,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 18:56:54,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 18:56:54,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 18:56:54,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 18:56:54,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 18:56:54,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 18:56:54,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 18:56:54,135 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 18:56:54,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 18:56:54,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 18:56:54,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 18:56:54,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 18:56:54,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 18:56:54,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 18:56:54,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 18:56:54,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 18:56:54,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 18:56:54,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 18:56:54,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 18:56:54,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 18:56:54,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 18:56:54,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 18:56:54,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 18:56:54,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 18:56:54,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 18:56:54,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 18:56:54,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 18:56:54,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 18:56:54,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 18:56:54,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 18:56:54,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 18:56:54,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 18:56:54,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 18:56:54,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 18:56:54,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 18:56:54,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 18:56:54,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 18:56:54,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 18:56:54,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 18:56:54,217 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 18:56:54,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 18:56:54,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 18:56:54,221 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 18:56:54,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 18:56:54,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 18:56:54,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 18:56:54,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 18:56:54,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 18:56:54,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 18:56:54,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 18:56:54,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 18:56:54,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 18:56:54,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 18:56:54,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 18:56:54,224 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 18:56:54,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 18:56:54,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 18:56:54,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 18:56:54,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 18:56:54,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 18:56:54,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 18:56:54,226 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 18:56:54,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 18:56:54,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 18:56:54,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 18:56:54,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 18:56:54,690 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 18:56:54,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2021-02-21 18:56:54,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6c3729e/63502edfb8b543bc9237178160b8f9f0/FLAG2f23c6511 [2021-02-21 18:56:55,536 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 18:56:55,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2021-02-21 18:56:55,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6c3729e/63502edfb8b543bc9237178160b8f9f0/FLAG2f23c6511 [2021-02-21 18:56:55,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff6c3729e/63502edfb8b543bc9237178160b8f9f0 [2021-02-21 18:56:55,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 18:56:55,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 18:56:55,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:55,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 18:56:55,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 18:56:55,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:55" (1/1) ... [2021-02-21 18:56:55,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e673fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:55, skipping insertion in model container [2021-02-21 18:56:55,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 06:56:55" (1/1) ... [2021-02-21 18:56:55,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 18:56:55,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 18:56:56,031 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c[12347,12360] [2021-02-21 18:56:56,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:56,152 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 18:56:56,265 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c[12347,12360] [2021-02-21 18:56:56,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 18:56:56,347 INFO L208 MainTranslator]: Completed translation [2021-02-21 18:56:56,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56 WrapperNode [2021-02-21 18:56:56,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 18:56:56,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 18:56:56,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 18:56:56,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 18:56:56,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (1/1) ... [2021-02-21 18:56:56,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (1/1) ... [2021-02-21 18:56:56,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (1/1) ... [2021-02-21 18:56:56,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (1/1) ... [2021-02-21 18:56:56,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (1/1) ... [2021-02-21 18:56:56,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (1/1) ... [2021-02-21 18:56:56,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (1/1) ... [2021-02-21 18:56:56,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 18:56:56,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 18:56:56,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 18:56:56,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 18:56:56,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (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 [2021-02-21 18:56:56,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 18:56:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 18:56:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 18:56:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:56,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 18:56:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 18:56:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 18:56:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 18:56:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 18:56:56,626 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 18:56:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 18:56:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 18:56:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 18:56:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 18:56:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 18:56:56,627 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 18:56:56,628 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 18:56:56,628 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 18:56:56,628 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 18:56:56,628 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 18:56:56,628 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 18:56:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 18:56:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 18:56:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 18:56:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 18:56:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 18:56:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 18:56:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 18:56:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 18:56:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 18:56:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 18:56:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 18:56:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 18:56:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 18:56:56,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 18:56:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 18:56:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 18:56:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 18:56:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 18:56:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 18:56:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 18:56:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 18:56:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 18:56:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 18:56:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 18:56:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 18:56:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 18:56:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 18:56:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 18:56:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 18:56:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 18:56:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 18:56:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 18:56:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 18:56:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 18:56:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 18:56:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 18:56:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 18:56:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 18:56:56,634 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 18:56:56,635 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 18:56:56,635 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 18:56:56,635 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 18:56:56,635 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 18:56:56,635 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 18:56:56,635 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 18:56:56,635 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 18:56:56,636 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 18:56:56,636 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 18:56:56,636 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 18:56:56,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 18:56:56,636 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 18:56:56,636 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 18:56:56,636 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 18:56:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 18:56:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 18:56:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 18:56:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 18:56:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 18:56:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 18:56:56,637 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 18:56:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 18:56:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 18:56:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 18:56:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 18:56:56,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 18:56:58,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 18:56:58,223 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 18:56:58,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:58 BoogieIcfgContainer [2021-02-21 18:56:58,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 18:56:58,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 18:56:58,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 18:56:58,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 18:56:58,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 06:56:55" (1/3) ... [2021-02-21 18:56:58,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a04c1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:58, skipping insertion in model container [2021-02-21 18:56:58,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 06:56:56" (2/3) ... [2021-02-21 18:56:58,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a04c1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 06:56:58, skipping insertion in model container [2021-02-21 18:56:58,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 06:56:58" (3/3) ... [2021-02-21 18:56:58,236 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2021-02-21 18:56:58,244 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 18:56:58,251 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 18:56:58,272 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 18:56:58,297 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 18:56:58,297 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 18:56:58,297 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 18:56:58,298 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 18:56:58,298 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 18:56:58,298 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 18:56:58,298 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 18:56:58,298 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 18:56:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2021-02-21 18:56:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 18:56:58,342 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:56:58,343 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] [2021-02-21 18:56:58,343 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:56:58,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:56:58,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1853223525, now seen corresponding path program 1 times [2021-02-21 18:56:58,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:56:58,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034747726] [2021-02-21 18:56:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:56:58,454 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:56:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:58,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:58,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:58,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,559 WARN L202 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:56:59,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:56:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:59,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:59,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:56:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:59,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:59,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:56:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:59,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:59,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:56:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:59,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:59,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:56:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:59,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:59,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 18:56:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:59,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:59,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:56:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:59,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:59,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:56:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:56:59,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:56:59,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:56:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:56:59,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034747726] [2021-02-21 18:56:59,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:56:59,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 18:56:59,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139173161] [2021-02-21 18:56:59,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 18:56:59,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:56:59,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 18:56:59,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:56:59,862 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2021-02-21 18:57:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:01,507 INFO L93 Difference]: Finished difference Result 441 states and 523 transitions. [2021-02-21 18:57:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 18:57:01,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 18:57:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:01,524 INFO L225 Difference]: With dead ends: 441 [2021-02-21 18:57:01,524 INFO L226 Difference]: Without dead ends: 279 [2021-02-21 18:57:01,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 18:57:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-02-21 18:57:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 240. [2021-02-21 18:57:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-02-21 18:57:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 258 transitions. [2021-02-21 18:57:01,670 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 258 transitions. Word has length 158 [2021-02-21 18:57:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:01,671 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 258 transitions. [2021-02-21 18:57:01,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 18:57:01,672 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 258 transitions. [2021-02-21 18:57:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 18:57:01,677 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:01,677 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] [2021-02-21 18:57:01,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 18:57:01,678 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:01,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1839669217, now seen corresponding path program 1 times [2021-02-21 18:57:01,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:01,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699326878] [2021-02-21 18:57:01,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:01,684 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:01,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:01,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:01,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:01,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:01,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:01,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,196 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:02,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:02,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:02,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:02,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:02,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:02,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:02,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:02,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:02,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:02,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:02,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 18:57:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:02,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:02,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 18:57:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:02,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:02,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 18:57:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:02,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:02,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:02,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699326878] [2021-02-21 18:57:02,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:02,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 18:57:02,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900186607] [2021-02-21 18:57:02,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 18:57:02,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:02,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 18:57:02,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 18:57:02,317 INFO L87 Difference]: Start difference. First operand 240 states and 258 transitions. Second operand 4 states. [2021-02-21 18:57:03,061 WARN L202 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 18:57:03,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:03,965 INFO L93 Difference]: Finished difference Result 357 states and 397 transitions. [2021-02-21 18:57:03,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 18:57:03,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 18:57:03,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:03,970 INFO L225 Difference]: With dead ends: 357 [2021-02-21 18:57:03,970 INFO L226 Difference]: Without dead ends: 262 [2021-02-21 18:57:03,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 18:57:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-21 18:57:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-21 18:57:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-21 18:57:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 245 transitions. [2021-02-21 18:57:04,085 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 245 transitions. Word has length 159 [2021-02-21 18:57:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:04,085 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 245 transitions. [2021-02-21 18:57:04,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 18:57:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 245 transitions. [2021-02-21 18:57:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 18:57:04,088 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:04,088 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] [2021-02-21 18:57:04,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 18:57:04,089 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:04,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:04,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2064716305, now seen corresponding path program 1 times [2021-02-21 18:57:04,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:04,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932519730] [2021-02-21 18:57:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:04,094 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:04,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:04,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:04,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 18:57:04,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,541 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:04,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:57:04,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 18:57:04,683 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 18:57:04,684 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 18:57:04,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 18:57:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 18:57:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 18:57:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:04,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:04,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:04,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932519730] [2021-02-21 18:57:04,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:04,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:57:04,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877625743] [2021-02-21 18:57:04,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:57:04,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:04,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:57:04,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:57:04,758 INFO L87 Difference]: Start difference. First operand 230 states and 245 transitions. Second operand 9 states. [2021-02-21 18:57:05,361 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:05,834 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 18:57:06,226 WARN L202 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 18:57:06,597 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:06,993 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:07,414 WARN L202 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:08,738 INFO L93 Difference]: Finished difference Result 377 states and 422 transitions. [2021-02-21 18:57:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 18:57:08,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 18:57:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:08,742 INFO L225 Difference]: With dead ends: 377 [2021-02-21 18:57:08,742 INFO L226 Difference]: Without dead ends: 262 [2021-02-21 18:57:08,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-21 18:57:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-21 18:57:08,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 230. [2021-02-21 18:57:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-21 18:57:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 244 transitions. [2021-02-21 18:57:08,848 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 244 transitions. Word has length 168 [2021-02-21 18:57:08,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:08,848 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 244 transitions. [2021-02-21 18:57:08,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:57:08,848 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 244 transitions. [2021-02-21 18:57:08,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-21 18:57:08,851 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:08,851 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] [2021-02-21 18:57:08,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 18:57:08,852 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:08,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:08,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1932849306, now seen corresponding path program 1 times [2021-02-21 18:57:08,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:08,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523619403] [2021-02-21 18:57:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:08,856 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:08,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:08,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:08,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:08,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:08,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:08,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:08,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:08,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:08,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:08,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:08,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:08,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:08,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:08,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:08,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:08,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,300 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 18:57:09,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 18:57:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 18:57:09,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 18:57:09,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 18:57:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 18:57:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 18:57:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-21 18:57:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 18:57:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-21 18:57:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-21 18:57:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:09,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 18:57:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-21 18:57:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 18:57:09,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 18:57:09,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 18:57:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 18:57:09,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523619403] [2021-02-21 18:57:09,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 18:57:09,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 18:57:09,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535876680] [2021-02-21 18:57:09,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 18:57:09,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 18:57:09,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 18:57:09,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 18:57:09,473 INFO L87 Difference]: Start difference. First operand 230 states and 244 transitions. Second operand 9 states. [2021-02-21 18:57:10,072 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:11,877 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:12,279 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:12,737 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:13,163 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 18:57:13,552 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 18:57:13,954 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:14,331 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 18:57:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 18:57:15,031 INFO L93 Difference]: Finished difference Result 527 states and 618 transitions. [2021-02-21 18:57:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 18:57:15,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-21 18:57:15,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 18:57:15,037 INFO L225 Difference]: With dead ends: 527 [2021-02-21 18:57:15,037 INFO L226 Difference]: Without dead ends: 412 [2021-02-21 18:57:15,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 18:57:15,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-02-21 18:57:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 337. [2021-02-21 18:57:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2021-02-21 18:57:15,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 368 transitions. [2021-02-21 18:57:15,205 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 368 transitions. Word has length 176 [2021-02-21 18:57:15,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 18:57:15,206 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 368 transitions. [2021-02-21 18:57:15,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 18:57:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 368 transitions. [2021-02-21 18:57:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 18:57:15,209 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 18:57:15,209 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] [2021-02-21 18:57:15,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 18:57:15,210 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 18:57:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 18:57:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash -172672318, now seen corresponding path program 1 times [2021-02-21 18:57:15,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 18:57:15,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398592076] [2021-02-21 18:57:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 18:57:15,215 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 18:57:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:57:15,329 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:57:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 18:57:15,417 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 18:57:15,681 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 18:57:15,681 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 18:57:15,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 18:57:15,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 06:57:15 BoogieIcfgContainer [2021-02-21 18:57:15,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 18:57:15,726 INFO L168 Benchmark]: Toolchain (without parser) took 20144.24 ms. Allocated memory was 158.3 MB in the beginning and 400.6 MB in the end (delta: 242.2 MB). Free memory was 132.7 MB in the beginning and 159.6 MB in the end (delta: -26.8 MB). Peak memory consumption was 216.1 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:15,727 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 18:57:15,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.53 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 111.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:15,735 INFO L168 Benchmark]: Boogie Preprocessor took 143.72 ms. Allocated memory is still 158.3 MB. Free memory was 111.4 MB in the beginning and 107.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:15,736 INFO L168 Benchmark]: RCFGBuilder took 1732.26 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 107.5 MB in the beginning and 126.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:15,736 INFO L168 Benchmark]: TraceAbstraction took 17492.53 ms. Allocated memory was 190.8 MB in the beginning and 400.6 MB in the end (delta: 209.7 MB). Free memory was 126.5 MB in the beginning and 159.6 MB in the end (delta: -33.0 MB). Peak memory consumption was 176.2 MB. Max. memory is 8.0 GB. [2021-02-21 18:57:15,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 131.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 759.53 ms. Allocated memory is still 158.3 MB. Free memory was 131.5 MB in the beginning and 111.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 143.72 ms. Allocated memory is still 158.3 MB. Free memory was 111.4 MB in the beginning and 107.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1732.26 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 107.5 MB in the beginning and 126.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17492.53 ms. Allocated memory was 190.8 MB in the beginning and 400.6 MB in the end (delta: 209.7 MB). Free memory was 126.5 MB in the beginning and 159.6 MB in the end (delta: -33.0 MB). Peak memory consumption was 176.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 508]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L415] int waterLevel = 1; [L416] int methaneLevelCritical = 0; [L584] int pumpRunning = 0; [L585] int systemActive = 1; [L737] int cleanupTimeShifts = 4; [L813] int retValue_acc ; [L814] int tmp ; [L818] FCALL select_helpers() [L819] FCALL select_features() [L820] CALL, EXPR valid_product() [L862] int retValue_acc ; [L865] retValue_acc = 1 [L866] return (retValue_acc); [L820] RET, EXPR valid_product() [L820] tmp = valid_product() [L822] COND TRUE \read(tmp) [L824] FCALL setup() [L825] CALL runTest() [L804] CALL test() [L516] int splverifierCounter ; [L517] int tmp ; [L518] int tmp___0 ; [L519] int tmp___1 ; [L520] int tmp___2 ; [L523] splverifierCounter = 0 [L525] COND TRUE 1 [L527] COND TRUE splverifierCounter < 4 [L533] tmp = __VERIFIER_nondet_int() [L535] COND TRUE \read(tmp) [L537] CALL waterRise() [L433] COND TRUE waterLevel < 2 [L434] waterLevel = waterLevel + 1 [L537] RET waterRise() [L543] tmp___0 = __VERIFIER_nondet_int() [L545] COND FALSE !(\read(tmp___0)) [L553] tmp___2 = __VERIFIER_nondet_int() [L555] COND TRUE \read(tmp___2) [L568] CALL timeShift() [L592] COND FALSE !(\read(pumpRunning)) [L599] COND TRUE \read(systemActive) [L601] CALL processEnvironment() [L621] int tmp ; [L624] COND FALSE !(\read(pumpRunning)) [L639] FCALL processEnvironment__wrappee__base() [L601] RET processEnvironment() [L607] CALL __utac_acc__Specification3_spec__1() [L872] int tmp ; [L873] int tmp___0 ; [L874] int tmp___1 ; [L878] CALL, EXPR isMethaneLevelCritical() [L454] int retValue_acc ; [L457] retValue_acc = methaneLevelCritical [L458] return (retValue_acc); [L878] RET, EXPR isMethaneLevelCritical() [L878] tmp = isMethaneLevelCritical() [L880] COND FALSE !(\read(tmp)) [L884] CALL, EXPR getWaterLevel() [L486] int retValue_acc ; [L489] retValue_acc = waterLevel [L490] return (retValue_acc); [L884] RET, EXPR getWaterLevel() [L884] tmp___0 = getWaterLevel() [L886] COND TRUE tmp___0 == 2 [L888] CALL, EXPR isPumpRunning() [L673] int retValue_acc ; [L676] retValue_acc = pumpRunning [L677] return (retValue_acc); [L888] RET, EXPR isPumpRunning() [L888] tmp___1 = isPumpRunning() [L890] COND FALSE !(\read(tmp___1)) [L894] CALL __automaton_fail() [L508] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 618 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 877 SDtfs, 938 SDslu, 1250 SDs, 0 SdLazy, 2277 SolverSat, 265 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 178 StatesRemovedByMinimization, 4 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...