/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_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:01:51,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:01:51,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:01:51,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 01:01:51,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 01:01:51,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 01:01:51,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 01:01:51,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 01:01:51,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 01:01:51,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 01:01:51,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 01:01:51,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 01:01:51,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:01:51,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:01:51,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:01:51,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:01:51,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:01:51,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:01:51,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:01:51,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:01:51,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:01:51,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:01:51,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:01:51,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:01:51,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 01:01:51,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 01:01:51,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 01:01:51,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 01:01:51,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 01:01:51,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 01:01:51,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 01:01:51,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 01:01:51,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 01:01:51,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 01:01:51,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 01:01:51,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 01:01:51,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 01:01:51,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 01:01:51,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:01:51,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:01:51,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:01:51,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:01:51,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:01:51,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:01:51,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:01:51,809 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:01:51,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:01:51,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:01:51,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:01:51,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:01:51,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:01:51,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:01:51,811 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:01:51,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:01:51,811 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:01:51,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:01:51,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:01:51,812 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:01:51,812 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:01:51,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:01:51,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:01:51,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:01:51,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:01:51,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:01:51,814 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:01:51,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:01:52,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:01:52,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:01:52,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:01:52,242 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:01:52,244 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:01:52,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2021-02-22 01:01:52,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d11ad435/8d0b12cfacf242bb9c8d50167bef13fc/FLAG26319b4ad [2021-02-22 01:01:53,079 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:01:53,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2021-02-22 01:01:53,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d11ad435/8d0b12cfacf242bb9c8d50167bef13fc/FLAG26319b4ad [2021-02-22 01:01:53,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d11ad435/8d0b12cfacf242bb9c8d50167bef13fc [2021-02-22 01:01:53,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:01:53,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:01:53,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:01:53,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:01:53,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:01:53,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:53,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be757d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53, skipping insertion in model container [2021-02-22 01:01:53,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:53,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:01:53,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:01:53,705 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_product09.cil.c[2573,2586] [2021-02-22 01:01:53,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:01:53,848 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:01:53,868 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_product09.cil.c[2573,2586] [2021-02-22 01:01:53,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:01:53,957 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:01:53,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53 WrapperNode [2021-02-22 01:01:53,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:01:53,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:01:53,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:01:53,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:01:53,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:53,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:53,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:53,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:54,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:54,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:54,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (1/1) ... [2021-02-22 01:01:54,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:01:54,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:01:54,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:01:54,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:01:54,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (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 [2021-02-22 01:01:54,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:01:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:01:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-22 01:01:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:01:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-22 01:01:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-22 01:01:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-22 01:01:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-22 01:01:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:01:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-22 01:01:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-22 01:01:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-22 01:01:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-22 01:01:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-22 01:01:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-22 01:01:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-22 01:01:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-22 01:01:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-22 01:01:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-22 01:01:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:01:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-22 01:01:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-22 01:01:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-22 01:01:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-22 01:01:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-22 01:01:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-22 01:01:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-22 01:01:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-22 01:01:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-22 01:01:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-22 01:01:54,187 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-22 01:01:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-22 01:01:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-22 01:01:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-22 01:01:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-22 01:01:54,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-22 01:01:54,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:01:54,188 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:01:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:01:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:01:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:01:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-22 01:01:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-22 01:01:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-22 01:01:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-22 01:01:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-22 01:01:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-22 01:01:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-22 01:01:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-22 01:01:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-22 01:01:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-22 01:01:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-22 01:01:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-22 01:01:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-22 01:01:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:01:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-22 01:01:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-22 01:01:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-22 01:01:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-22 01:01:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-22 01:01:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-22 01:01:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-22 01:01:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-22 01:01:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-22 01:01:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-22 01:01:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-22 01:01:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-22 01:01:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-22 01:01:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 01:01:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 01:01:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-22 01:01:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 01:01:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 01:01:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:01:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 01:01:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-22 01:01:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:01:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-22 01:01:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-22 01:01:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:01:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-22 01:01:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-22 01:01:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-22 01:01:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:01:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:01:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:01:55,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:01:55,592 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 01:01:55,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:01:55 BoogieIcfgContainer [2021-02-22 01:01:55,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:01:55,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:01:55,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:01:55,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:01:55,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:01:53" (1/3) ... [2021-02-22 01:01:55,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db7d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:01:55, skipping insertion in model container [2021-02-22 01:01:55,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:01:53" (2/3) ... [2021-02-22 01:01:55,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db7d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:01:55, skipping insertion in model container [2021-02-22 01:01:55,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:01:55" (3/3) ... [2021-02-22 01:01:55,606 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product09.cil.c [2021-02-22 01:01:55,614 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:01:55,619 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:01:55,638 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:01:55,661 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:01:55,661 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:01:55,661 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:01:55,661 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:01:55,662 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:01:55,662 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:01:55,662 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:01:55,662 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:01:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states. [2021-02-22 01:01:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-22 01:01:55,701 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:01:55,702 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] [2021-02-22 01:01:55,703 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:01:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:01:55,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1854146296, now seen corresponding path program 1 times [2021-02-22 01:01:55,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:01:55,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926425370] [2021-02-22 01:01:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:01:55,794 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:01:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,490 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:01:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:01:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:01:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:01:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:01:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:01:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-22 01:01:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:01:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:01:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:56,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:56,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:01:56,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926425370] [2021-02-22 01:01:56,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:01:56,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 01:01:56,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178935095] [2021-02-22 01:01:56,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 01:01:56,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:01:56,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 01:01:56,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:01:56,858 INFO L87 Difference]: Start difference. First operand 274 states. Second operand 3 states. [2021-02-22 01:01:58,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:01:58,225 INFO L93 Difference]: Finished difference Result 371 states and 444 transitions. [2021-02-22 01:01:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 01:01:58,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-22 01:01:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:01:58,252 INFO L225 Difference]: With dead ends: 371 [2021-02-22 01:01:58,253 INFO L226 Difference]: Without dead ends: 243 [2021-02-22 01:01:58,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 01:01:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-02-22 01:01:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 206. [2021-02-22 01:01:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2021-02-22 01:01:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 220 transitions. [2021-02-22 01:01:58,399 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 220 transitions. Word has length 158 [2021-02-22 01:01:58,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:01:58,400 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 220 transitions. [2021-02-22 01:01:58,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 01:01:58,401 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 220 transitions. [2021-02-22 01:01:58,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-22 01:01:58,405 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:01:58,405 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] [2021-02-22 01:01:58,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:01:58,406 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:01:58,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:01:58,406 INFO L82 PathProgramCache]: Analyzing trace with hash 454730193, now seen corresponding path program 1 times [2021-02-22 01:01:58,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:01:58,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625824498] [2021-02-22 01:01:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:01:58,411 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:01:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:01:58,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,859 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:01:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:01:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:01:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:01:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:01:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:01:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-22 01:01:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-22 01:01:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-22 01:01:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:01:58,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:01:58,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:01:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:01:58,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625824498] [2021-02-22 01:01:58,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:01:58,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:01:58,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884633150] [2021-02-22 01:01:58,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:01:58,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:01:58,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:01:58,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:01:58,986 INFO L87 Difference]: Start difference. First operand 206 states and 220 transitions. Second operand 4 states. [2021-02-22 01:01:59,740 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-22 01:02:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:02:00,406 INFO L93 Difference]: Finished difference Result 287 states and 318 transitions. [2021-02-22 01:02:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:02:00,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-22 01:02:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:02:00,410 INFO L225 Difference]: With dead ends: 287 [2021-02-22 01:02:00,411 INFO L226 Difference]: Without dead ends: 226 [2021-02-22 01:02:00,412 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 [2021-02-22 01:02:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-22 01:02:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-22 01:02:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-22 01:02:00,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 207 transitions. [2021-02-22 01:02:00,520 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 207 transitions. Word has length 159 [2021-02-22 01:02:00,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:02:00,521 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 207 transitions. [2021-02-22 01:02:00,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:02:00,521 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 207 transitions. [2021-02-22 01:02:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-22 01:02:00,529 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:00,530 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] [2021-02-22 01:02:00,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:02:00,531 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:00,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1483944557, now seen corresponding path program 1 times [2021-02-22 01:02:00,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:00,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375684570] [2021-02-22 01:02:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:00,545 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:00,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:00,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:00,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:00,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:00,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:00,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:00,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:00,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:02:00,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:00,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,075 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:02:01,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:02:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:01,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:02:01,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:02:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:01,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:02:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:01,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:02:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:01,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:02:01,234 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-22 01:02:01,236 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-22 01:02:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:02:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:01,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-22 01:02:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:01,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-22 01:02:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:01,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-22 01:02:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:01,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:01,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:02:01,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375684570] [2021-02-22 01:02:01,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:02:01,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:02:01,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046193684] [2021-02-22 01:02:01,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:02:01,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:02:01,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:02:01,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:02:01,323 INFO L87 Difference]: Start difference. First operand 196 states and 207 transitions. Second operand 9 states. [2021-02-22 01:02:01,921 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:02:02,375 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-22 01:02:02,748 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-22 01:02:03,118 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:03,503 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:02:03,871 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:04,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:02:04,964 INFO L93 Difference]: Finished difference Result 307 states and 343 transitions. [2021-02-22 01:02:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:02:04,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-22 01:02:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:02:04,976 INFO L225 Difference]: With dead ends: 307 [2021-02-22 01:02:04,976 INFO L226 Difference]: Without dead ends: 226 [2021-02-22 01:02:04,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:02:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-22 01:02:05,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 196. [2021-02-22 01:02:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2021-02-22 01:02:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 206 transitions. [2021-02-22 01:02:05,065 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 206 transitions. Word has length 168 [2021-02-22 01:02:05,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:02:05,067 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 206 transitions. [2021-02-22 01:02:05,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:02:05,067 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 206 transitions. [2021-02-22 01:02:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-22 01:02:05,070 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:05,071 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] [2021-02-22 01:02:05,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:02:05,071 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:05,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1149653709, now seen corresponding path program 1 times [2021-02-22 01:02:05,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:05,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139528942] [2021-02-22 01:02:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:05,077 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,602 WARN L202 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-22 01:02:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:02:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:02:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-22 01:02:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-22 01:02:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-22 01:02:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-22 01:02:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-22 01:02:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-22 01:02:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-22 01:02:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:02:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-22 01:02:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:02:05,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:02:05,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:02:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:02:05,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139528942] [2021-02-22 01:02:05,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:02:05,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:02:05,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737589526] [2021-02-22 01:02:05,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:02:05,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:02:05,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:02:05,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:02:05,764 INFO L87 Difference]: Start difference. First operand 196 states and 206 transitions. Second operand 8 states. [2021-02-22 01:02:06,338 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:02:07,663 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:08,004 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:02:08,419 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:08,827 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-22 01:02:09,211 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-22 01:02:09,570 WARN L202 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:09,965 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-22 01:02:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:02:10,292 INFO L93 Difference]: Finished difference Result 373 states and 422 transitions. [2021-02-22 01:02:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 01:02:10,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2021-02-22 01:02:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:02:10,297 INFO L225 Difference]: With dead ends: 373 [2021-02-22 01:02:10,297 INFO L226 Difference]: Without dead ends: 292 [2021-02-22 01:02:10,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:02:10,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-02-22 01:02:10,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 267. [2021-02-22 01:02:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2021-02-22 01:02:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 289 transitions. [2021-02-22 01:02:10,409 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 289 transitions. Word has length 171 [2021-02-22 01:02:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:02:10,410 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 289 transitions. [2021-02-22 01:02:10,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:02:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 289 transitions. [2021-02-22 01:02:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-22 01:02:10,413 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:02:10,413 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] [2021-02-22 01:02:10,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:02:10,413 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:02:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:02:10,414 INFO L82 PathProgramCache]: Analyzing trace with hash -668012141, now seen corresponding path program 1 times [2021-02-22 01:02:10,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:02:10,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075326744] [2021-02-22 01:02:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:02:10,417 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:02:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:02:10,489 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:02:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:02:10,558 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:02:10,768 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:02:10,769 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:02:10,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:02:10,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:02:10 BoogieIcfgContainer [2021-02-22 01:02:10,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:02:10,813 INFO L168 Benchmark]: Toolchain (without parser) took 17494.83 ms. Allocated memory was 154.1 MB in the beginning and 413.1 MB in the end (delta: 259.0 MB). Free memory was 129.2 MB in the beginning and 378.2 MB in the end (delta: -249.0 MB). Peak memory consumption was 250.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:10,814 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 154.1 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:02:10,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.31 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 108.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:10,819 INFO L168 Benchmark]: Boogie Preprocessor took 85.88 ms. Allocated memory is still 154.1 MB. Free memory was 108.5 MB in the beginning and 104.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:10,819 INFO L168 Benchmark]: RCFGBuilder took 1549.58 ms. Allocated memory was 154.1 MB in the beginning and 198.2 MB in the end (delta: 44.0 MB). Free memory was 104.6 MB in the beginning and 137.1 MB in the end (delta: -32.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:10,820 INFO L168 Benchmark]: TraceAbstraction took 15209.95 ms. Allocated memory was 198.2 MB in the beginning and 413.1 MB in the end (delta: 215.0 MB). Free memory was 136.6 MB in the beginning and 378.2 MB in the end (delta: -241.6 MB). Peak memory consumption was 212.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:02:10,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 154.1 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 627.31 ms. Allocated memory is still 154.1 MB. Free memory was 128.1 MB in the beginning and 108.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.88 ms. Allocated memory is still 154.1 MB. Free memory was 108.5 MB in the beginning and 104.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1549.58 ms. Allocated memory was 154.1 MB in the beginning and 198.2 MB in the end (delta: 44.0 MB). Free memory was 104.6 MB in the beginning and 137.1 MB in the end (delta: -32.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15209.95 ms. Allocated memory was 198.2 MB in the beginning and 413.1 MB in the end (delta: 215.0 MB). Free memory was 136.6 MB in the beginning and 378.2 MB in the end (delta: -241.6 MB). Peak memory consumption was 212.4 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; [L226] int pumpRunning = 0; [L227] int systemActive = 1; [L591] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L788] int waterLevel = 1; [L789] int methaneLevelCritical = 0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L413] int retValue_acc ; [L416] retValue_acc = 1 [L417] 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() [L156] int splverifierCounter ; [L157] int tmp ; [L158] int tmp___0 ; [L159] int tmp___1 ; [L160] int tmp___2 ; [L163] splverifierCounter = 0 [L165] COND TRUE 1 [L167] COND TRUE splverifierCounter < 4 [L173] tmp = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp) [L177] CALL waterRise() [L806] COND TRUE waterLevel < 2 [L807] waterLevel = waterLevel + 1 [L177] RET waterRise() [L183] tmp___0 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___0)) [L193] tmp___2 = __VERIFIER_nondet_int() [L195] COND TRUE \read(tmp___2) [L208] CALL timeShift() [L234] COND FALSE !(\read(pumpRunning)) [L241] COND TRUE \read(systemActive) [L243] FCALL processEnvironment() [L249] CALL __utac_acc__Specification3_spec__1() [L354] int tmp ; [L355] int tmp___0 ; [L356] int tmp___1 ; [L360] CALL, EXPR isMethaneLevelCritical() [L827] int retValue_acc ; [L830] retValue_acc = methaneLevelCritical [L831] return (retValue_acc); [L360] RET, EXPR isMethaneLevelCritical() [L360] tmp = isMethaneLevelCritical() [L362] COND FALSE !(\read(tmp)) [L366] CALL, EXPR getWaterLevel() [L859] int retValue_acc ; [L862] retValue_acc = waterLevel [L863] return (retValue_acc); [L366] RET, EXPR getWaterLevel() [L366] tmp___0 = getWaterLevel() [L368] COND TRUE tmp___0 == 2 [L370] CALL, EXPR isPumpRunning() [L307] int retValue_acc ; [L310] retValue_acc = pumpRunning [L311] return (retValue_acc); [L370] RET, EXPR isPumpRunning() [L370] tmp___1 = isPumpRunning() [L372] COND FALSE !(\read(tmp___1)) [L376] CALL __automaton_fail() [L150] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 596 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 755 SDtfs, 704 SDslu, 1099 SDs, 0 SdLazy, 1740 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=274occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 122 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...