/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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:00:33,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:00:33,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:00:33,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:00:33,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:00:33,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:00:33,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:00:33,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:00:33,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:00:33,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:00:33,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:00:33,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:00:33,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:00:33,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:00:33,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:00:33,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:00:33,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:00:33,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:00:33,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:00:33,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:00:33,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:00:33,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:00:33,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:00:33,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:00:33,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:00:33,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:00:33,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:00:33,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:00:33,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:00:33,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:00:33,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:00:33,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:00:33,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:00:33,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:00:33,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:00:33,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:00:33,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:00:33,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:00:33,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:00:33,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:00:33,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:00:33,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:00:33,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:00:33,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:00:33,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:00:33,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:00:33,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:00:33,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:00:33,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:00:33,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:00:33,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:00:33,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:00:33,177 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:00:33,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:00:33,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:00:33,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:00:33,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:00:33,178 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:00:33,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:00:33,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:00:33,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:33,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:00:33,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:00:33,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:00:33,180 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:00:33,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:00:33,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:00:33,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:00:33,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:00:33,652 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:00:33,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2021-02-21 19:00:33,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b483bca/b69a076521a545d9a20c05679ded332d/FLAG7fcb47b76 [2021-02-21 19:00:34,397 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:00:34,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2021-02-21 19:00:34,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b483bca/b69a076521a545d9a20c05679ded332d/FLAG7fcb47b76 [2021-02-21 19:00:34,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89b483bca/b69a076521a545d9a20c05679ded332d [2021-02-21 19:00:34,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:00:34,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:00:34,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:34,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:00:34,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:00:34,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6447ba27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:34, skipping insertion in model container [2021-02-21 19:00:34,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:00:34" (1/1) ... [2021-02-21 19:00:34,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:00:34,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:00:35,119 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_product63.cil.c[8881,8894] [2021-02-21 19:00:35,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:35,235 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:00:35,313 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_product63.cil.c[8881,8894] [2021-02-21 19:00:35,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:00:35,439 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:00:35,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35 WrapperNode [2021-02-21 19:00:35,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:00:35,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:00:35,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:00:35,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:00:35,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (1/1) ... [2021-02-21 19:00:35,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (1/1) ... [2021-02-21 19:00:35,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (1/1) ... [2021-02-21 19:00:35,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (1/1) ... [2021-02-21 19:00:35,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (1/1) ... [2021-02-21 19:00:35,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (1/1) ... [2021-02-21 19:00:35,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (1/1) ... [2021-02-21 19:00:35,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:00:35,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:00:35,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:00:35,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:00:35,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:00:35,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:00:35,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:00:35,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:35,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:00:35,693 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:00:35,694 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:00:35,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:00:35,694 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:00:35,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:00:35,694 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:00:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:00:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:00:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:00:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:00:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-21 19:00:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:00:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:00:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:00:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:00:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:00:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:00:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:00:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:00:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-21 19:00:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-21 19:00:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-21 19:00:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:00:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:00:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:00:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:00:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:00:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:00:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:00:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-21 19:00:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-21 19:00:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:00:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:00:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:00:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:00:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:00:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:00:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:00:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:00:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:00:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:00:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:00:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:00:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:00:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:00:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:00:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:00:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:00:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:00:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:00:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:00:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:00:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:00:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:00:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:00:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:00:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:00:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:00:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-21 19:00:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-21 19:00:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:00:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:00:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:00:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-21 19:00:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-21 19:00:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:00:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-21 19:00:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-21 19:00:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-21 19:00:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-21 19:00:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:00:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:00:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2021-02-21 19:00:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:00:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:00:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:00:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:00:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:00:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:00:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:00:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:00:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:00:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:00:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:00:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:00:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:00:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:00:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:00:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:00:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:00:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:00:35,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:00:35,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:00:37,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:00:37,428 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:00:37,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:37 BoogieIcfgContainer [2021-02-21 19:00:37,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:00:37,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:00:37,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:00:37,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:00:37,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:00:34" (1/3) ... [2021-02-21 19:00:37,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b9af6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:37, skipping insertion in model container [2021-02-21 19:00:37,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:00:35" (2/3) ... [2021-02-21 19:00:37,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b9af6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:00:37, skipping insertion in model container [2021-02-21 19:00:37,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:00:37" (3/3) ... [2021-02-21 19:00:37,440 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2021-02-21 19:00:37,447 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:00:37,453 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:00:37,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:00:37,495 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:00:37,495 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:00:37,495 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:00:37,496 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:00:37,496 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:00:37,496 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:00:37,496 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:00:37,496 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:00:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states. [2021-02-21 19:00:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-21 19:00:37,543 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:37,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:37,545 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:37,551 INFO L82 PathProgramCache]: Analyzing trace with hash -243843483, now seen corresponding path program 1 times [2021-02-21 19:00:37,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:37,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651579502] [2021-02-21 19:00:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:37,642 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,577 WARN L202 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:00:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:00:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:38,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:38,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:38,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651579502] [2021-02-21 19:00:38,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:38,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:00:38,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213313961] [2021-02-21 19:00:38,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:00:38,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:38,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:00:38,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:38,848 INFO L87 Difference]: Start difference. First operand 364 states. Second operand 3 states. [2021-02-21 19:00:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:40,895 INFO L93 Difference]: Finished difference Result 593 states and 706 transitions. [2021-02-21 19:00:40,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:00:40,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-21 19:00:40,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:40,918 INFO L225 Difference]: With dead ends: 593 [2021-02-21 19:00:40,918 INFO L226 Difference]: Without dead ends: 359 [2021-02-21 19:00:40,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:00:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-02-21 19:00:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 312. [2021-02-21 19:00:41,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2021-02-21 19:00:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 344 transitions. [2021-02-21 19:00:41,113 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 344 transitions. Word has length 158 [2021-02-21 19:00:41,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:41,114 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 344 transitions. [2021-02-21 19:00:41,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:00:41,115 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 344 transitions. [2021-02-21 19:00:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-21 19:00:41,120 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:41,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:41,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:00:41,121 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:41,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2104447006, now seen corresponding path program 1 times [2021-02-21 19:00:41,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:41,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206534302] [2021-02-21 19:00:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:41,126 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:41,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,542 WARN L202 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-21 19:00:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-21 19:00:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:00:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:41,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:41,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:41,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206534302] [2021-02-21 19:00:41,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:41,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:00:41,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963875348] [2021-02-21 19:00:41,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:00:41,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:41,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:00:41,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:00:41,654 INFO L87 Difference]: Start difference. First operand 312 states and 344 transitions. Second operand 4 states. [2021-02-21 19:00:42,359 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:43,888 INFO L93 Difference]: Finished difference Result 503 states and 572 transitions. [2021-02-21 19:00:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:00:43,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-21 19:00:43,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:43,894 INFO L225 Difference]: With dead ends: 503 [2021-02-21 19:00:43,894 INFO L226 Difference]: Without dead ends: 342 [2021-02-21 19:00:43,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:00:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-02-21 19:00:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 302. [2021-02-21 19:00:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2021-02-21 19:00:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 331 transitions. [2021-02-21 19:00:44,011 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 331 transitions. Word has length 159 [2021-02-21 19:00:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:44,012 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 331 transitions. [2021-02-21 19:00:44,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:00:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 331 transitions. [2021-02-21 19:00:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-21 19:00:44,015 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:44,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:44,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:00:44,016 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:44,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:44,016 INFO L82 PathProgramCache]: Analyzing trace with hash -218181787, now seen corresponding path program 1 times [2021-02-21 19:00:44,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:44,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097589795] [2021-02-21 19:00:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:44,021 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:44,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:44,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:44,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:44,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:44,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:44,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:00:44,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,481 WARN L202 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:44,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:00:44,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:00:44,597 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:00:44,600 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:00:44,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:00:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-21 19:00:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-21 19:00:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:44,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:44,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:44,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:44,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097589795] [2021-02-21 19:00:44,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:44,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:00:44,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008532882] [2021-02-21 19:00:44,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:00:44,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:44,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:00:44,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:00:44,686 INFO L87 Difference]: Start difference. First operand 302 states and 331 transitions. Second operand 9 states. [2021-02-21 19:00:45,273 WARN L202 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:45,687 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:00:46,065 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:00:46,410 WARN L202 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:46,784 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:47,111 WARN L202 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:48,145 WARN L202 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:00:51,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:51,557 INFO L93 Difference]: Finished difference Result 826 states and 956 transitions. [2021-02-21 19:00:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:00:51,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-21 19:00:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:51,564 INFO L225 Difference]: With dead ends: 826 [2021-02-21 19:00:51,564 INFO L226 Difference]: Without dead ends: 639 [2021-02-21 19:00:51,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-02-21 19:00:51,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-02-21 19:00:51,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 564. [2021-02-21 19:00:51,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2021-02-21 19:00:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 637 transitions. [2021-02-21 19:00:51,833 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 637 transitions. Word has length 168 [2021-02-21 19:00:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:00:51,834 INFO L480 AbstractCegarLoop]: Abstraction has 564 states and 637 transitions. [2021-02-21 19:00:51,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:00:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 637 transitions. [2021-02-21 19:00:51,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-21 19:00:51,839 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:00:51,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:00:51,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:00:51,840 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:00:51,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:00:51,840 INFO L82 PathProgramCache]: Analyzing trace with hash -289433691, now seen corresponding path program 1 times [2021-02-21 19:00:51,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:00:51,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591421067] [2021-02-21 19:00:51,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:00:51,844 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:00:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:51,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:51,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:51,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,243 WARN L202 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:00:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:00:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:00:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:00:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:00:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:00:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:00:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:00:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-21 19:00:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-21 19:00:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:52,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:00:52,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-21 19:00:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:00:52,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:00:52,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:00:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:00:52,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591421067] [2021-02-21 19:00:52,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:00:52,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 19:00:52,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217175186] [2021-02-21 19:00:52,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 19:00:52,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:00:52,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 19:00:52,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-21 19:00:52,447 INFO L87 Difference]: Start difference. First operand 564 states and 637 transitions. Second operand 9 states. [2021-02-21 19:00:53,114 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:55,686 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:56,098 WARN L202 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:56,554 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:57,027 WARN L202 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:00:57,386 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:00:57,733 WARN L202 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:58,083 WARN L202 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:00:59,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:00:59,638 INFO L93 Difference]: Finished difference Result 1557 states and 1878 transitions. [2021-02-21 19:00:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 19:00:59,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-21 19:00:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:00:59,647 INFO L225 Difference]: With dead ends: 1557 [2021-02-21 19:00:59,648 INFO L226 Difference]: Without dead ends: 1108 [2021-02-21 19:00:59,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-21 19:00:59,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-02-21 19:01:00,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1000. [2021-02-21 19:01:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2021-02-21 19:01:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1156 transitions. [2021-02-21 19:01:00,200 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1156 transitions. Word has length 177 [2021-02-21 19:01:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:00,202 INFO L480 AbstractCegarLoop]: Abstraction has 1000 states and 1156 transitions. [2021-02-21 19:01:00,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 19:01:00,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1156 transitions. [2021-02-21 19:01:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:01:00,212 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:00,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:01:00,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:01:00,214 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:00,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:00,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1398088534, now seen corresponding path program 1 times [2021-02-21 19:01:00,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:00,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426607830] [2021-02-21 19:01:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:00,220 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,645 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:01:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:01:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:01:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:01:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:01:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:01:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-21 19:01:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:01:00,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-21 19:01:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-21 19:01:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-21 19:01:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-21 19:01:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:01:00,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:01:00,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:01:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:01:00,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426607830] [2021-02-21 19:01:00,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:01:00,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 19:01:00,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514705577] [2021-02-21 19:01:00,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 19:01:00,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:01:00,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 19:01:00,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 19:01:00,853 INFO L87 Difference]: Start difference. First operand 1000 states and 1156 transitions. Second operand 6 states. [2021-02-21 19:01:01,456 WARN L202 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:01:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:01:04,412 INFO L93 Difference]: Finished difference Result 2231 states and 2691 transitions. [2021-02-21 19:01:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 19:01:04,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-21 19:01:04,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:01:04,423 INFO L225 Difference]: With dead ends: 2231 [2021-02-21 19:01:04,424 INFO L226 Difference]: Without dead ends: 1346 [2021-02-21 19:01:04,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-21 19:01:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2021-02-21 19:01:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1249. [2021-02-21 19:01:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2021-02-21 19:01:05,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1424 transitions. [2021-02-21 19:01:05,102 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1424 transitions. Word has length 182 [2021-02-21 19:01:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:01:05,103 INFO L480 AbstractCegarLoop]: Abstraction has 1249 states and 1424 transitions. [2021-02-21 19:01:05,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 19:01:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1424 transitions. [2021-02-21 19:01:05,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-21 19:01:05,108 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:01:05,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:01:05,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:01:05,109 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:01:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:01:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1322695665, now seen corresponding path program 1 times [2021-02-21 19:01:05,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:01:05,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766047097] [2021-02-21 19:01:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:01:05,114 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:01:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:01:05,213 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:01:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 19:01:05,303 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 19:01:05,575 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 19:01:05,575 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 19:01:05,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 19:01:05,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 07:01:05 BoogieIcfgContainer [2021-02-21 19:01:05,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 19:01:05,622 INFO L168 Benchmark]: Toolchain (without parser) took 30914.28 ms. Allocated memory was 165.7 MB in the beginning and 733.0 MB in the end (delta: 567.3 MB). Free memory was 140.8 MB in the beginning and 615.9 MB in the end (delta: -475.1 MB). Peak memory consumption was 93.1 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:05,623 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 165.7 MB. Free memory is still 140.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 19:01:05,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.18 ms. Allocated memory is still 165.7 MB. Free memory was 139.8 MB in the beginning and 117.2 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:05,624 INFO L168 Benchmark]: Boogie Preprocessor took 146.93 ms. Allocated memory is still 165.7 MB. Free memory was 117.2 MB in the beginning and 144.9 MB in the end (delta: -27.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:05,625 INFO L168 Benchmark]: RCFGBuilder took 1841.60 ms. Allocated memory is still 165.7 MB. Free memory was 144.9 MB in the beginning and 96.1 MB in the end (delta: 48.7 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:05,629 INFO L168 Benchmark]: TraceAbstraction took 28182.78 ms. Allocated memory was 165.7 MB in the beginning and 733.0 MB in the end (delta: 567.3 MB). Free memory was 95.6 MB in the beginning and 615.9 MB in the end (delta: -520.3 MB). Peak memory consumption was 47.0 MB. Max. memory is 8.0 GB. [2021-02-21 19:01:05,634 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 165.7 MB. Free memory is still 140.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 720.18 ms. Allocated memory is still 165.7 MB. Free memory was 139.8 MB in the beginning and 117.2 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 146.93 ms. Allocated memory is still 165.7 MB. Free memory was 117.2 MB in the beginning and 144.9 MB in the end (delta: -27.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1841.60 ms. Allocated memory is still 165.7 MB. Free memory was 144.9 MB in the beginning and 96.1 MB in the end (delta: 48.7 MB). Peak memory consumption was 65.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 28182.78 ms. Allocated memory was 165.7 MB in the beginning and 733.0 MB in the end (delta: 567.3 MB). Free memory was 95.6 MB in the beginning and 615.9 MB in the end (delta: -520.3 MB). Peak memory consumption was 47.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 621]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L190] int pumpRunning = 0; [L191] int systemActive = 1; [L514] int waterLevel = 1; [L515] int methaneLevelCritical = 0; [L829] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L123] int retValue_acc ; [L124] int tmp ; [L128] FCALL select_helpers() [L129] FCALL select_features() [L130] CALL, EXPR valid_product() [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); [L130] RET, EXPR valid_product() [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) [L134] FCALL setup() [L135] CALL runTest() [L114] CALL test() [L447] int splverifierCounter ; [L448] int tmp ; [L449] int tmp___0 ; [L450] int tmp___1 ; [L451] int tmp___2 ; [L454] splverifierCounter = 0 [L456] COND TRUE 1 [L458] COND TRUE splverifierCounter < 4 [L464] tmp = __VERIFIER_nondet_int() [L466] COND TRUE \read(tmp) [L468] CALL waterRise() [L532] COND TRUE waterLevel < 2 [L533] waterLevel = waterLevel + 1 [L468] RET waterRise() [L474] tmp___0 = __VERIFIER_nondet_int() [L476] COND FALSE !(\read(tmp___0)) [L484] tmp___2 = __VERIFIER_nondet_int() [L486] COND FALSE !(\read(tmp___2)) [L490] tmp___1 = __VERIFIER_nondet_int() [L492] COND TRUE \read(tmp___1) [L494] CALL stopSystem() [L434] COND FALSE !(\read(pumpRunning)) [L441] systemActive = 0 [L494] RET stopSystem() [L501] CALL timeShift() [L198] COND FALSE !(\read(pumpRunning)) [L205] COND FALSE !(\read(systemActive)) [L213] CALL __utac_acc__Specification3_spec__1() [L627] int tmp ; [L628] int tmp___0 ; [L629] int tmp___1 ; [L633] CALL, EXPR isMethaneLevelCritical() [L553] int retValue_acc ; [L556] retValue_acc = methaneLevelCritical [L557] return (retValue_acc); [L633] RET, EXPR isMethaneLevelCritical() [L633] tmp = isMethaneLevelCritical() [L635] COND FALSE !(\read(tmp)) [L639] CALL, EXPR getWaterLevel() [L585] int retValue_acc ; [L588] retValue_acc = waterLevel [L589] return (retValue_acc); [L639] RET, EXPR getWaterLevel() [L639] tmp___0 = getWaterLevel() [L641] COND TRUE tmp___0 == 2 [L643] CALL, EXPR isPumpRunning() [L348] int retValue_acc ; [L351] retValue_acc = pumpRunning [L352] return (retValue_acc); [L643] RET, EXPR isPumpRunning() [L643] tmp___1 = isPumpRunning() [L645] COND FALSE !(\read(tmp___1)) [L649] CALL __automaton_fail() [L621] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 679 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 21.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1476 SDtfs, 2407 SDslu, 1540 SDs, 0 SdLazy, 4423 SolverSat, 823 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1249occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 367 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...