/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:24:35,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:24:35,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:24:35,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:24:35,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:24:35,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:24:35,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:24:35,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:24:35,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:24:35,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:24:35,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:24:35,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:24:35,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:24:35,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:24:35,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:24:35,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:24:35,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:24:35,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:24:35,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:24:35,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:24:35,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:24:35,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:24:35,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:24:35,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:24:35,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 16:24:35,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:24:35,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:24:35,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:24:35,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:24:35,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:24:35,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:24:35,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:24:35,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:24:35,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:24:35,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:24:35,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:24:35,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:24:35,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:24:35,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:24:35,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:24:35,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:24:35,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:24:35,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:24:35,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:24:35,211 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:24:35,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:24:35,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:24:35,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:24:35,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:24:35,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:24:35,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:24:35,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:24:35,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:24:35,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:24:35,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:24:35,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:24:35,661 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:24:35,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2021-02-23 16:24:35,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8139fb04a/95f6bd8e48ec429489bd5de2e9b17948/FLAG050142a17 [2021-02-23 16:24:36,466 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:24:36,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product29.cil.c [2021-02-23 16:24:36,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8139fb04a/95f6bd8e48ec429489bd5de2e9b17948/FLAG050142a17 [2021-02-23 16:24:36,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8139fb04a/95f6bd8e48ec429489bd5de2e9b17948 [2021-02-23 16:24:36,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:24:36,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:24:36,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:24:36,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:24:36,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:24:36,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:24:36" (1/1) ... [2021-02-23 16:24:36,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ea27cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:36, skipping insertion in model container [2021-02-23 16:24:36,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:24:36" (1/1) ... [2021-02-23 16:24:36,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:24:36,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:24:37,284 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_product29.cil.c[13408,13421] [2021-02-23 16:24:37,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:24:37,332 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:24:37,399 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_product29.cil.c[13408,13421] [2021-02-23 16:24:37,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:24:37,463 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:24:37,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37 WrapperNode [2021-02-23 16:24:37,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:24:37,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:24:37,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:24:37,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:24:37,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (1/1) ... [2021-02-23 16:24:37,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (1/1) ... [2021-02-23 16:24:37,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (1/1) ... [2021-02-23 16:24:37,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (1/1) ... [2021-02-23 16:24:37,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (1/1) ... [2021-02-23 16:24:37,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (1/1) ... [2021-02-23 16:24:37,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (1/1) ... [2021-02-23 16:24:37,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:24:37,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:24:37,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:24:37,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:24:37,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (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 [2021-02-23 16:24:37,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:24:37,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:24:37,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:24:37,786 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:24:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:24:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:24:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:24:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:24:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:24:37,787 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:24:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:24:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:24:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:24:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:24:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:24:37,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:24:37,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:24:37,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:24:37,789 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:24:37,789 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:24:37,789 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:24:37,790 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:24:37,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:24:37,790 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:24:37,790 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:24:37,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:24:37,790 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:24:37,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:24:37,791 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:24:37,791 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:24:37,791 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:24:37,791 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:24:37,791 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:24:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:24:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:24:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:24:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:24:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:24:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:24:37,792 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:24:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:24:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:24:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:24:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:24:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:24:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:24:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:24:37,793 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:24:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:24:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:24:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:24:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:24:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:24:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:24:37,794 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:24:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:24:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:24:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:24:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:24:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:24:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:24:37,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:24:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:24:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:24:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:24:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:24:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:24:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:24:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:24:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:24:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:24:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:24:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:24:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:24:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:24:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:24:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:24:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:24:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:24:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:24:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:24:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:24:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:24:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:24:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:24:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:24:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:24:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:24:37,799 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:24:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:24:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-23 16:24:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:24:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:24:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:24:39,101 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:24:39,101 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:24:39,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:24:39 BoogieIcfgContainer [2021-02-23 16:24:39,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:24:39,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:24:39,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:24:39,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:24:39,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:24:36" (1/3) ... [2021-02-23 16:24:39,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569850e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:24:39, skipping insertion in model container [2021-02-23 16:24:39,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:24:37" (2/3) ... [2021-02-23 16:24:39,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569850e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:24:39, skipping insertion in model container [2021-02-23 16:24:39,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:24:39" (3/3) ... [2021-02-23 16:24:39,113 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product29.cil.c [2021-02-23 16:24:39,121 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:24:39,126 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:24:39,146 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:24:39,170 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:24:39,170 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:24:39,170 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:24:39,170 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:24:39,171 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:24:39,171 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:24:39,171 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:24:39,171 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:24:39,194 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states. [2021-02-23 16:24:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:24:39,216 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:39,217 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] [2021-02-23 16:24:39,218 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:39,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1444282729, now seen corresponding path program 1 times [2021-02-23 16:24:39,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:39,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246289191] [2021-02-23 16:24:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:39,317 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:39,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:39,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:39,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:39,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,031 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:40,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:40,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:40,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:40,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:40,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:40,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:40,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:40,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:40,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:40,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:24:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:40,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:40,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:40,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:40,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:24:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:40,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:40,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:40,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246289191] [2021-02-23 16:24:40,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:40,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:24:40,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340658651] [2021-02-23 16:24:40,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:24:40,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:40,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:24:40,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:24:40,284 INFO L87 Difference]: Start difference. First operand 322 states. Second operand 3 states. [2021-02-23 16:24:41,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:41,961 INFO L93 Difference]: Finished difference Result 483 states and 576 transitions. [2021-02-23 16:24:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:24:41,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:24:41,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:41,980 INFO L225 Difference]: With dead ends: 483 [2021-02-23 16:24:41,980 INFO L226 Difference]: Without dead ends: 301 [2021-02-23 16:24:41,986 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 [2021-02-23 16:24:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-02-23 16:24:42,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 260. [2021-02-23 16:24:42,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2021-02-23 16:24:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 283 transitions. [2021-02-23 16:24:42,164 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 283 transitions. Word has length 158 [2021-02-23 16:24:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:42,167 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 283 transitions. [2021-02-23 16:24:42,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:24:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 283 transitions. [2021-02-23 16:24:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:24:42,179 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:42,180 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] [2021-02-23 16:24:42,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:24:42,180 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:42,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1480340107, now seen corresponding path program 1 times [2021-02-23 16:24:42,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:42,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915617353] [2021-02-23 16:24:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:42,189 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:42,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,676 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:24:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:24:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:24:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:42,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:42,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:42,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915617353] [2021-02-23 16:24:42,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:42,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:24:42,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439238050] [2021-02-23 16:24:42,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:24:42,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:42,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:24:42,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:24:42,800 INFO L87 Difference]: Start difference. First operand 260 states and 283 transitions. Second operand 4 states. [2021-02-23 16:24:43,548 WARN L202 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:24:44,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:44,653 INFO L93 Difference]: Finished difference Result 399 states and 450 transitions. [2021-02-23 16:24:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:24:44,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:24:44,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:44,658 INFO L225 Difference]: With dead ends: 399 [2021-02-23 16:24:44,658 INFO L226 Difference]: Without dead ends: 284 [2021-02-23 16:24:44,660 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 [2021-02-23 16:24:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-23 16:24:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 250. [2021-02-23 16:24:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-23 16:24:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 270 transitions. [2021-02-23 16:24:44,761 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 270 transitions. Word has length 159 [2021-02-23 16:24:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:44,761 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 270 transitions. [2021-02-23 16:24:44,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:24:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 270 transitions. [2021-02-23 16:24:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:24:44,764 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:44,765 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] [2021-02-23 16:24:44,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:24:44,765 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2121635617, now seen corresponding path program 1 times [2021-02-23 16:24:44,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:44,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767355159] [2021-02-23 16:24:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:44,770 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:44,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:44,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:44,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:44,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:44,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:44,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:44,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:44,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:24:44,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:44,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,242 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:45,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:24:45,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:45,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:45,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:45,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:24:45,429 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:24:45,430 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:24:45,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:45,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:45,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:24:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:45,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:24:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:45,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:45,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:45,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767355159] [2021-02-23 16:24:45,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:45,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:24:45,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373765898] [2021-02-23 16:24:45,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:24:45,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:24:45,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:24:45,564 INFO L87 Difference]: Start difference. First operand 250 states and 270 transitions. Second operand 9 states. [2021-02-23 16:24:46,218 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:46,660 WARN L202 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:24:46,996 WARN L202 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:24:47,375 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:47,738 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:48,100 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:49,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:49,695 INFO L93 Difference]: Finished difference Result 419 states and 475 transitions. [2021-02-23 16:24:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:24:49,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:24:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:49,699 INFO L225 Difference]: With dead ends: 419 [2021-02-23 16:24:49,699 INFO L226 Difference]: Without dead ends: 284 [2021-02-23 16:24:49,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:24:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-23 16:24:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 250. [2021-02-23 16:24:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2021-02-23 16:24:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 269 transitions. [2021-02-23 16:24:49,795 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 269 transitions. Word has length 168 [2021-02-23 16:24:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:49,796 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 269 transitions. [2021-02-23 16:24:49,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:24:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 269 transitions. [2021-02-23 16:24:49,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-23 16:24:49,799 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:49,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:49,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:24:49,800 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:49,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1804083470, now seen corresponding path program 1 times [2021-02-23 16:24:49,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:49,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986344115] [2021-02-23 16:24:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:49,804 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:49,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:49,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:49,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:49,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:49,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:49,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:49,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:49,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:49,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:49,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:49,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:49,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:49,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:49,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:49,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:49,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,225 WARN L202 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:50,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:24:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:24:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-23 16:24:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:24:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:50,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-02-23 16:24:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:50,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:50,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:50,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986344115] [2021-02-23 16:24:50,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:50,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:24:50,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048088105] [2021-02-23 16:24:50,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:24:50,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:50,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:24:50,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:24:50,396 INFO L87 Difference]: Start difference. First operand 250 states and 269 transitions. Second operand 9 states. [2021-02-23 16:24:51,015 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:53,382 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:53,750 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:54,163 WARN L202 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:54,534 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:24:54,903 WARN L202 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:55,451 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:55,811 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:24:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:56,257 INFO L93 Difference]: Finished difference Result 591 states and 699 transitions. [2021-02-23 16:24:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:24:56,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 181 [2021-02-23 16:24:56,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:56,264 INFO L225 Difference]: With dead ends: 591 [2021-02-23 16:24:56,264 INFO L226 Difference]: Without dead ends: 456 [2021-02-23 16:24:56,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:24:56,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-02-23 16:24:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 379. [2021-02-23 16:24:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2021-02-23 16:24:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 421 transitions. [2021-02-23 16:24:56,420 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 421 transitions. Word has length 181 [2021-02-23 16:24:56,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:56,421 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 421 transitions. [2021-02-23 16:24:56,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:24:56,421 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 421 transitions. [2021-02-23 16:24:56,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-02-23 16:24:56,424 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:56,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:56,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:24:56,425 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:56,426 INFO L82 PathProgramCache]: Analyzing trace with hash 650293260, now seen corresponding path program 1 times [2021-02-23 16:24:56,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:56,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099259191] [2021-02-23 16:24:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:56,429 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:56,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:56,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:56,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:56,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:56,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,817 WARN L202 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:24:56,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:24:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:24:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:24:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:24:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:24:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:24:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:24:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:24:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:24:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:24:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-02-23 16:24:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-02-23 16:24:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-02-23 16:24:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:24:56,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:24:56,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:24:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:24:56,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099259191] [2021-02-23 16:24:56,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:24:56,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:24:56,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674705811] [2021-02-23 16:24:56,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:24:56,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:24:56,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:24:56,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:24:56,972 INFO L87 Difference]: Start difference. First operand 379 states and 421 transitions. Second operand 6 states. [2021-02-23 16:24:57,563 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:24:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:24:58,322 INFO L93 Difference]: Finished difference Result 558 states and 640 transitions. [2021-02-23 16:24:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:24:58,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2021-02-23 16:24:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:24:58,326 INFO L225 Difference]: With dead ends: 558 [2021-02-23 16:24:58,326 INFO L226 Difference]: Without dead ends: 294 [2021-02-23 16:24:58,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:24:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-02-23 16:24:58,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 273. [2021-02-23 16:24:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2021-02-23 16:24:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 288 transitions. [2021-02-23 16:24:58,448 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 288 transitions. Word has length 191 [2021-02-23 16:24:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:24:58,449 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 288 transitions. [2021-02-23 16:24:58,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:24:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 288 transitions. [2021-02-23 16:24:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-02-23 16:24:58,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:24:58,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:24:58,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:24:58,453 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:24:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:24:58,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2073224505, now seen corresponding path program 1 times [2021-02-23 16:24:58,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:24:58,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202847569] [2021-02-23 16:24:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:24:58,456 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:24:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:24:58,537 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:24:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:24:58,610 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:24:58,810 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:24:58,810 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:24:58,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:24:58,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:24:58 BoogieIcfgContainer [2021-02-23 16:24:58,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:24:58,837 INFO L168 Benchmark]: Toolchain (without parser) took 22035.04 ms. Allocated memory was 164.6 MB in the beginning and 442.5 MB in the end (delta: 277.9 MB). Free memory was 140.6 MB in the beginning and 182.5 MB in the end (delta: -41.8 MB). Peak memory consumption was 236.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:58,838 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 164.6 MB. Free memory is still 143.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:24:58,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.72 ms. Allocated memory is still 164.6 MB. Free memory was 139.6 MB in the beginning and 118.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:58,839 INFO L168 Benchmark]: Boogie Preprocessor took 109.91 ms. Allocated memory is still 164.6 MB. Free memory was 118.4 MB in the beginning and 114.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:58,839 INFO L168 Benchmark]: RCFGBuilder took 1528.29 ms. Allocated memory is still 164.6 MB. Free memory was 114.5 MB in the beginning and 121.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:58,840 INFO L168 Benchmark]: TraceAbstraction took 19729.75 ms. Allocated memory was 164.6 MB in the beginning and 442.5 MB in the end (delta: 277.9 MB). Free memory was 121.2 MB in the beginning and 182.5 MB in the end (delta: -61.3 MB). Peak memory consumption was 216.6 MB. Max. memory is 8.0 GB. [2021-02-23 16:24:58,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 164.6 MB. Free memory is still 143.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 641.72 ms. Allocated memory is still 164.6 MB. Free memory was 139.6 MB in the beginning and 118.4 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 109.91 ms. Allocated memory is still 164.6 MB. Free memory was 118.4 MB in the beginning and 114.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1528.29 ms. Allocated memory is still 164.6 MB. Free memory was 114.5 MB in the beginning and 121.2 MB in the end (delta: -6.8 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19729.75 ms. Allocated memory was 164.6 MB in the beginning and 442.5 MB in the end (delta: 277.9 MB). Free memory was 121.2 MB in the beginning and 182.5 MB in the end (delta: -61.3 MB). Peak memory consumption was 216.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 582]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L85] int waterLevel = 1; [L86] int methaneLevelCritical = 0; [L343] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L587] int cleanupTimeShifts = 4; [L688] int pumpRunning = 0; [L689] int systemActive = 1; [L663] int retValue_acc ; [L664] int tmp ; [L668] FCALL select_helpers() [L669] FCALL select_features() [L670] CALL, EXPR valid_product() [L569] int retValue_acc ; [L572] retValue_acc = 1 [L573] return (retValue_acc); [L670] RET, EXPR valid_product() [L670] tmp = valid_product() [L672] COND TRUE \read(tmp) [L674] FCALL setup() [L675] CALL runTest() [L657] CALL test() [L884] int splverifierCounter ; [L885] int tmp ; [L886] int tmp___0 ; [L887] int tmp___1 ; [L888] int tmp___2 ; [L891] splverifierCounter = 0 [L893] COND TRUE 1 [L895] COND TRUE splverifierCounter < 4 [L901] tmp = __VERIFIER_nondet_int() [L903] COND TRUE \read(tmp) [L905] CALL waterRise() [L103] COND TRUE waterLevel < 2 [L104] waterLevel = waterLevel + 1 [L905] RET waterRise() [L911] tmp___0 = __VERIFIER_nondet_int() [L913] COND FALSE !(\read(tmp___0)) [L921] tmp___2 = __VERIFIER_nondet_int() [L923] COND TRUE \read(tmp___2) [L936] CALL timeShift() [L695] COND FALSE !(\read(pumpRunning)) [L702] COND TRUE \read(systemActive) [L704] CALL processEnvironment() [L750] int tmp ; [L753] COND FALSE !(\read(pumpRunning)) [L768] CALL processEnvironment__wrappee__methaneQuery() [L724] int tmp ; [L727] COND FALSE !(\read(pumpRunning)) [L742] FCALL processEnvironment__wrappee__base() [L768] RET processEnvironment__wrappee__methaneQuery() [L704] RET processEnvironment() [L710] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L124] int retValue_acc ; [L127] retValue_acc = methaneLevelCritical [L128] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L156] int retValue_acc ; [L159] retValue_acc = waterLevel [L160] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L819] int retValue_acc ; [L822] retValue_acc = pumpRunning [L823] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L582] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 639 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1137 SDtfs, 1426 SDslu, 1386 SDs, 0 SdLazy, 2747 SolverSat, 406 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=379occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 207 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...