/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:29:23,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:29:23,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:29:23,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:29:23,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:29:23,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:29:23,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:29:23,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:29:23,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:29:23,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:29:23,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:29:23,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:29:23,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:29:23,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:29:23,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:29:23,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:29:23,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:29:23,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:29:23,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:29:23,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:29:23,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:29:23,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:29:23,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:29:23,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:29:23,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 03:29:23,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 03:29:23,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 03:29:23,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 03:29:23,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 03:29:23,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 03:29:23,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 03:29:23,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 03:29:23,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 03:29:23,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 03:29:23,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 03:29:23,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 03:29:23,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 03:29:23,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 03:29:23,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:29:23,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:29:23,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:29:23,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:29:23,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:29:23,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:29:23,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:29:23,819 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:29:23,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:29:23,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:29:23,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:29:23,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:29:23,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:29:23,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:29:23,821 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:29:23,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:29:23,822 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:29:23,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:29:23,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:29:23,823 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:29:23,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:29:23,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:29:23,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:29:23,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:29:23,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:29:23,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:29:23,825 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:29:23,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:29:24,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:29:24,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:29:24,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:29:24,290 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:29:24,290 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:29:24,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2021-02-24 03:29:24,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2943b69eb/37a9779ac4f74585bf563eab0df9c747/FLAGf68d3e287 [2021-02-24 03:29:25,090 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:29:25,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product43.cil.c [2021-02-24 03:29:25,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2943b69eb/37a9779ac4f74585bf563eab0df9c747/FLAGf68d3e287 [2021-02-24 03:29:25,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2943b69eb/37a9779ac4f74585bf563eab0df9c747 [2021-02-24 03:29:25,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:29:25,361 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:29:25,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:29:25,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:29:25,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:29:25,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:25,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@579a3d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25, skipping insertion in model container [2021-02-24 03:29:25,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:25,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:29:25,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:29:25,629 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_product43.cil.c[2573,2586] [2021-02-24 03:29:25,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:29:25,841 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:29:25,863 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_product43.cil.c[2573,2586] [2021-02-24 03:29:25,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:29:25,961 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:29:25,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25 WrapperNode [2021-02-24 03:29:25,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:29:25,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:29:25,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:29:25,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:29:25,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:25,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:25,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:25,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:26,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:26,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:26,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (1/1) ... [2021-02-24 03:29:26,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:29:26,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:29:26,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:29:26,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:29:26,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (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 [2021-02-24 03:29:26,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:29:26,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:29:26,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-24 03:29:26,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:29:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-24 03:29:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-24 03:29:26,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-24 03:29:26,186 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-24 03:29:26,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:29:26,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-24 03:29:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:29:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-24 03:29:26,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-24 03:29:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-24 03:29:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-24 03:29:26,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-24 03:29:26,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-24 03:29:26,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-24 03:29:26,191 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-24 03:29:26,194 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-24 03:29:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-24 03:29:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-24 03:29:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-24 03:29:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-24 03:29:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2021-02-24 03:29:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-24 03:29:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-24 03:29:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-24 03:29:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-24 03:29:26,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-24 03:29:26,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-24 03:29:26,225 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-24 03:29:26,225 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-24 03:29:26,225 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-24 03:29:26,225 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-24 03:29:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-24 03:29:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-24 03:29:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-24 03:29:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-24 03:29:26,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-24 03:29:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:29:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:29:26,227 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:29:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:29:26,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:29:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-24 03:29:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-24 03:29:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-24 03:29:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-24 03:29:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-24 03:29:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-24 03:29:26,231 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-24 03:29:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-24 03:29:26,232 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-24 03:29:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-24 03:29:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-24 03:29:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-24 03:29:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-24 03:29:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:29:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-24 03:29:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-24 03:29:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-24 03:29:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-24 03:29:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-24 03:29:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 03:29:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-24 03:29:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-24 03:29:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 03:29:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 03:29:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:29:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 03:29:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-24 03:29:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:29:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-24 03:29:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-24 03:29:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:29:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-24 03:29:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-24 03:29:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-24 03:29:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-24 03:29:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-24 03:29:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-24 03:29:26,248 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-24 03:29:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-24 03:29:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-24 03:29:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-24 03:29:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-24 03:29:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-24 03:29:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-24 03:29:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2021-02-24 03:29:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-24 03:29:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:29:26,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:29:26,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:29:27,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:29:27,910 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 03:29:27,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:29:27 BoogieIcfgContainer [2021-02-24 03:29:27,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:29:27,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:29:27,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:29:27,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:29:27,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:29:25" (1/3) ... [2021-02-24 03:29:27,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33159cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:29:27, skipping insertion in model container [2021-02-24 03:29:27,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:29:25" (2/3) ... [2021-02-24 03:29:27,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33159cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:29:27, skipping insertion in model container [2021-02-24 03:29:27,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:29:27" (3/3) ... [2021-02-24 03:29:27,923 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product43.cil.c [2021-02-24 03:29:27,930 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:29:27,936 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:29:27,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:29:27,977 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:29:27,977 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:29:27,978 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:29:27,978 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:29:27,978 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:29:27,978 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:29:27,978 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:29:27,979 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:29:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states. [2021-02-24 03:29:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-24 03:29:28,023 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:28,024 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] [2021-02-24 03:29:28,025 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:28,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1496528977, now seen corresponding path program 1 times [2021-02-24 03:29:28,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:28,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7809375] [2021-02-24 03:29:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:28,128 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:28,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:28,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:28,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:28,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:28,981 WARN L202 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:28,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:29,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:29,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:29,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:29,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:29,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:29,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:29,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:29,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:29,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:29,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:29,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:29,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:29,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-24 03:29:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:29,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:29,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:29,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:29:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:29,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:29,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:29,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:29:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:29,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:29,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:29:29,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7809375] [2021-02-24 03:29:29,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:29,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 03:29:29,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699354198] [2021-02-24 03:29:29,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 03:29:29,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:29,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 03:29:29,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:29:29,209 INFO L87 Difference]: Start difference. First operand 321 states. Second operand 3 states. [2021-02-24 03:29:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:31,054 INFO L93 Difference]: Finished difference Result 503 states and 594 transitions. [2021-02-24 03:29:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 03:29:31,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-24 03:29:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:31,075 INFO L225 Difference]: With dead ends: 503 [2021-02-24 03:29:31,075 INFO L226 Difference]: Without dead ends: 312 [2021-02-24 03:29:31,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 03:29:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-02-24 03:29:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 269. [2021-02-24 03:29:31,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2021-02-24 03:29:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2021-02-24 03:29:31,265 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 158 [2021-02-24 03:29:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:31,267 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2021-02-24 03:29:31,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 03:29:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2021-02-24 03:29:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-24 03:29:31,272 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:31,272 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] [2021-02-24 03:29:31,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:29:31,273 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:31,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:31,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1512702236, now seen corresponding path program 1 times [2021-02-24 03:29:31,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:31,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864355409] [2021-02-24 03:29:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:31,279 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:31,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,796 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:31,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-24 03:29:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-24 03:29:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-24 03:29:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:31,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:31,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:29:31,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864355409] [2021-02-24 03:29:31,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:31,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:29:31,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364306019] [2021-02-24 03:29:31,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:29:31,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:31,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:29:31,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:29:31,923 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 4 states. [2021-02-24 03:29:32,688 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:29:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:33,831 INFO L93 Difference]: Finished difference Result 410 states and 458 transitions. [2021-02-24 03:29:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:29:33,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-24 03:29:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:33,837 INFO L225 Difference]: With dead ends: 410 [2021-02-24 03:29:33,838 INFO L226 Difference]: Without dead ends: 295 [2021-02-24 03:29:33,840 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 [2021-02-24 03:29:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-02-24 03:29:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 259. [2021-02-24 03:29:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2021-02-24 03:29:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 278 transitions. [2021-02-24 03:29:33,959 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 278 transitions. Word has length 159 [2021-02-24 03:29:33,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:33,960 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 278 transitions. [2021-02-24 03:29:33,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:29:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 278 transitions. [2021-02-24 03:29:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-24 03:29:33,963 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:33,964 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] [2021-02-24 03:29:33,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:29:33,964 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:33,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1024484371, now seen corresponding path program 1 times [2021-02-24 03:29:33,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:33,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084049474] [2021-02-24 03:29:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:33,969 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:34,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:34,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:34,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:34,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:29:34,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:29:34,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:29:34,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,395 WARN L202 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:29:34,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:29:34,550 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-24 03:29:34,551 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-24 03:29:34,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-24 03:29:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-24 03:29:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-24 03:29:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:34,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:34,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:29:34,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084049474] [2021-02-24 03:29:34,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:34,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:29:34,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448425253] [2021-02-24 03:29:34,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:29:34,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:34,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:29:34,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:29:34,631 INFO L87 Difference]: Start difference. First operand 259 states and 278 transitions. Second operand 9 states. [2021-02-24 03:29:35,308 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:35,836 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-24 03:29:36,166 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-24 03:29:36,527 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:36,869 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:29:37,250 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:38,335 WARN L202 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:29:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:40,698 INFO L93 Difference]: Finished difference Result 689 states and 785 transitions. [2021-02-24 03:29:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 03:29:40,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-24 03:29:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:40,706 INFO L225 Difference]: With dead ends: 689 [2021-02-24 03:29:40,706 INFO L226 Difference]: Without dead ends: 545 [2021-02-24 03:29:40,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:29:40,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-02-24 03:29:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 466. [2021-02-24 03:29:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2021-02-24 03:29:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 515 transitions. [2021-02-24 03:29:40,926 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 515 transitions. Word has length 168 [2021-02-24 03:29:40,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:40,927 INFO L480 AbstractCegarLoop]: Abstraction has 466 states and 515 transitions. [2021-02-24 03:29:40,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:29:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 515 transitions. [2021-02-24 03:29:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-24 03:29:40,931 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:40,931 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] [2021-02-24 03:29:40,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:29:40,932 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:40,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:40,933 INFO L82 PathProgramCache]: Analyzing trace with hash -751554570, now seen corresponding path program 1 times [2021-02-24 03:29:40,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:40,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182186832] [2021-02-24 03:29:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:40,937 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:41,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:41,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:41,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:41,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:41,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,411 WARN L202 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:41,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-24 03:29:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:41,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:29:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-24 03:29:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-24 03:29:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-24 03:29:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-24 03:29:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:41,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:41,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:29:41,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182186832] [2021-02-24 03:29:41,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:41,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 03:29:41,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780462143] [2021-02-24 03:29:41,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 03:29:41,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:41,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 03:29:41,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 03:29:41,646 INFO L87 Difference]: Start difference. First operand 466 states and 515 transitions. Second operand 6 states. [2021-02-24 03:29:42,301 WARN L202 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:44,243 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-24 03:29:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:45,015 INFO L93 Difference]: Finished difference Result 1171 states and 1362 transitions. [2021-02-24 03:29:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 03:29:45,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2021-02-24 03:29:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:45,024 INFO L225 Difference]: With dead ends: 1171 [2021-02-24 03:29:45,024 INFO L226 Difference]: Without dead ends: 820 [2021-02-24 03:29:45,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:29:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-02-24 03:29:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 704. [2021-02-24 03:29:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2021-02-24 03:29:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 777 transitions. [2021-02-24 03:29:45,381 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 777 transitions. Word has length 176 [2021-02-24 03:29:45,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:45,382 INFO L480 AbstractCegarLoop]: Abstraction has 704 states and 777 transitions. [2021-02-24 03:29:45,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 03:29:45,382 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 777 transitions. [2021-02-24 03:29:45,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-24 03:29:45,385 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:45,385 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] [2021-02-24 03:29:45,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:29:45,386 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:45,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:45,387 INFO L82 PathProgramCache]: Analyzing trace with hash -775423515, now seen corresponding path program 1 times [2021-02-24 03:29:45,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:45,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482001519] [2021-02-24 03:29:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:45,390 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,832 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-24 03:29:45,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:29:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:29:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-24 03:29:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-24 03:29:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-24 03:29:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-24 03:29:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-24 03:29:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-24 03:29:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-24 03:29:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:29:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-24 03:29:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:29:45,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:29:45,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:29:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:29:45,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482001519] [2021-02-24 03:29:45,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:29:45,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:29:45,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799033303] [2021-02-24 03:29:45,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:29:45,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:29:45,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:29:45,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:29:45,989 INFO L87 Difference]: Start difference. First operand 704 states and 777 transitions. Second operand 9 states. [2021-02-24 03:29:46,735 WARN L202 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:48,316 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:48,726 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:29:49,172 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:49,600 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-24 03:29:49,979 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-24 03:29:50,357 WARN L202 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:50,735 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-24 03:29:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:29:52,386 INFO L93 Difference]: Finished difference Result 1817 states and 2106 transitions. [2021-02-24 03:29:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:29:52,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-24 03:29:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:29:52,394 INFO L225 Difference]: With dead ends: 1817 [2021-02-24 03:29:52,394 INFO L226 Difference]: Without dead ends: 1228 [2021-02-24 03:29:52,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-24 03:29:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-02-24 03:29:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1145. [2021-02-24 03:29:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1145 states. [2021-02-24 03:29:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1280 transitions. [2021-02-24 03:29:53,059 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1280 transitions. Word has length 177 [2021-02-24 03:29:53,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:29:53,060 INFO L480 AbstractCegarLoop]: Abstraction has 1145 states and 1280 transitions. [2021-02-24 03:29:53,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:29:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1280 transitions. [2021-02-24 03:29:53,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-24 03:29:53,064 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:29:53,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:29:53,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:29:53,065 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:29:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:29:53,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1051388138, now seen corresponding path program 1 times [2021-02-24 03:29:53,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:29:53,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27760762] [2021-02-24 03:29:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:29:53,070 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:29:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:29:53,189 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:29:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:29:53,282 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:29:53,569 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:29:53,570 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:29:53,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:29:53,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:29:53 BoogieIcfgContainer [2021-02-24 03:29:53,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:29:53,598 INFO L168 Benchmark]: Toolchain (without parser) took 28245.82 ms. Allocated memory was 160.4 MB in the beginning and 634.4 MB in the end (delta: 474.0 MB). Free memory was 136.7 MB in the beginning and 515.3 MB in the end (delta: -378.6 MB). Peak memory consumption was 95.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:53,598 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:29:53,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.77 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 114.4 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:53,599 INFO L168 Benchmark]: Boogie Preprocessor took 87.43 ms. Allocated memory is still 160.4 MB. Free memory was 114.1 MB in the beginning and 109.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:53,600 INFO L168 Benchmark]: RCFGBuilder took 1859.97 ms. Allocated memory was 160.4 MB in the beginning and 197.1 MB in the end (delta: 36.7 MB). Free memory was 109.7 MB in the beginning and 160.3 MB in the end (delta: -50.6 MB). Peak memory consumption was 55.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:53,600 INFO L168 Benchmark]: TraceAbstraction took 25681.36 ms. Allocated memory was 197.1 MB in the beginning and 634.4 MB in the end (delta: 437.3 MB). Free memory was 160.3 MB in the beginning and 515.3 MB in the end (delta: -355.0 MB). Peak memory consumption was 82.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:29:53,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 134.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 599.77 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 114.4 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.43 ms. Allocated memory is still 160.4 MB. Free memory was 114.1 MB in the beginning and 109.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1859.97 ms. Allocated memory was 160.4 MB in the beginning and 197.1 MB in the end (delta: 36.7 MB). Free memory was 109.7 MB in the beginning and 160.3 MB in the end (delta: -50.6 MB). Peak memory consumption was 55.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25681.36 ms. Allocated memory was 197.1 MB in the beginning and 634.4 MB in the end (delta: 437.3 MB). Free memory was 160.3 MB in the beginning and 515.3 MB in the end (delta: -355.0 MB). Peak memory consumption was 82.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 150]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L361] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L599] int pumpRunning = 0; [L600] int systemActive = 1; [L851] int waterLevel = 1; [L852] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L785] int splverifierCounter ; [L786] int tmp ; [L787] int tmp___0 ; [L788] int tmp___1 ; [L789] int tmp___2 ; [L792] splverifierCounter = 0 [L794] COND TRUE 1 [L796] COND TRUE splverifierCounter < 4 [L802] tmp = __VERIFIER_nondet_int() [L804] COND TRUE \read(tmp) [L806] CALL waterRise() [L869] COND TRUE waterLevel < 2 [L870] waterLevel = waterLevel + 1 [L806] RET waterRise() [L812] tmp___0 = __VERIFIER_nondet_int() [L814] COND FALSE !(\read(tmp___0)) [L822] tmp___2 = __VERIFIER_nondet_int() [L824] COND FALSE !(\read(tmp___2)) [L828] tmp___1 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___1) [L832] CALL stopSystem() [L772] COND FALSE !(\read(pumpRunning)) [L779] systemActive = 0 [L832] RET stopSystem() [L839] CALL timeShift() [L606] COND FALSE !(\read(pumpRunning)) [L613] COND FALSE !(\read(systemActive)) [L621] CALL __utac_acc__Specification3_spec__1() [L159] int tmp ; [L160] int tmp___0 ; [L161] int tmp___1 ; [L165] CALL, EXPR isMethaneLevelCritical() [L890] int retValue_acc ; [L893] retValue_acc = methaneLevelCritical [L894] return (retValue_acc); [L165] RET, EXPR isMethaneLevelCritical() [L165] tmp = isMethaneLevelCritical() [L167] COND FALSE !(\read(tmp)) [L171] CALL, EXPR getWaterLevel() [L922] int retValue_acc ; [L925] retValue_acc = waterLevel [L926] return (retValue_acc); [L171] RET, EXPR getWaterLevel() [L171] tmp___0 = getWaterLevel() [L173] COND TRUE tmp___0 == 2 [L175] CALL, EXPR isPumpRunning() [L705] int retValue_acc ; [L708] retValue_acc = pumpRunning [L709] return (retValue_acc); [L175] RET, EXPR isPumpRunning() [L175] tmp___1 = isPumpRunning() [L177] COND FALSE !(\read(tmp___1)) [L181] CALL __automaton_fail() [L150] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 636 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1285 SDtfs, 1749 SDslu, 1693 SDs, 0 SdLazy, 3644 SolverSat, 547 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1145occurred 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: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 357 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...