/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_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:22:40,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:22:40,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:22:40,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:22:40,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:22:40,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:22:40,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:22:40,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:22:40,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:22:40,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:22:40,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:22:40,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:22:40,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:22:40,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:22:40,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:22:40,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:22:40,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:22:40,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:22:40,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:22:40,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:22:40,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:22:40,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:22:40,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:22:40,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:22:40,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:22:40,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:22:40,151 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:22:40,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:22:40,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:22:40,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:22:40,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:22:40,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:22:40,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:22:40,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:22:40,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:22:40,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:22:40,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:22:40,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:22:40,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:22:40,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:22:40,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:22:40,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:22:40,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:22:40,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:22:40,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:22:40,197 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:22:40,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:22:40,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:22:40,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:22:40,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:22:40,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:22:40,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:22:40,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:22:40,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:22:40,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:22:40,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:22:40,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:22:40,200 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:22:40,200 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:22:40,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:22:40,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:22:40,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:22:40,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:22:40,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:22:40,201 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:22:40,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:22:40,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:22:40,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:22:40,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:22:40,609 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:22:40,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product13.cil.c [2021-02-23 16:22:40,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04504c468/65ac362461c14c0794aedd13b0d41d85/FLAGa97668eb6 [2021-02-23 16:22:41,381 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:22:41,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product13.cil.c [2021-02-23 16:22:41,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04504c468/65ac362461c14c0794aedd13b0d41d85/FLAGa97668eb6 [2021-02-23 16:22:41,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04504c468/65ac362461c14c0794aedd13b0d41d85 [2021-02-23 16:22:41,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:22:41,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:22:41,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:22:41,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:22:41,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:22:41,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:22:41" (1/1) ... [2021-02-23 16:22:41,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727a3ff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:41, skipping insertion in model container [2021-02-23 16:22:41,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:22:41" (1/1) ... [2021-02-23 16:22:41,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:22:41,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:22:42,002 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_product13.cil.c[3019,3032] [2021-02-23 16:22:42,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:22:42,105 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:22:42,156 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_product13.cil.c[3019,3032] [2021-02-23 16:22:42,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:22:42,290 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:22:42,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42 WrapperNode [2021-02-23 16:22:42,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:22:42,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:22:42,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:22:42,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:22:42,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (1/1) ... [2021-02-23 16:22:42,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (1/1) ... [2021-02-23 16:22:42,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (1/1) ... [2021-02-23 16:22:42,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (1/1) ... [2021-02-23 16:22:42,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (1/1) ... [2021-02-23 16:22:42,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (1/1) ... [2021-02-23 16:22:42,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (1/1) ... [2021-02-23 16:22:42,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:22:42,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:22:42,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:22:42,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:22:42,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:22:42,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:22:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:22:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:22:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:22:42,500 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:22:42,501 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:22:42,501 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:22:42,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:22:42,501 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:22:42,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:22:42,501 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:22:42,502 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:22:42,502 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:22:42,502 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:22:42,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:22:42,502 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:22:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:22:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:22:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:22:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:22:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:22:42,503 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:22:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:22:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:22:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:22:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:22:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:22:42,504 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:22:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:22:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:22:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:22:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:22:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:22:42,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:22:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:22:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:22:42,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:22:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:22:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:22:42,506 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:22:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:22:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:22:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:22:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:22:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:22:42,507 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:22:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:22:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:22:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:22:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:22:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:22:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:22:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:22:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:22:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:22:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:22:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:22:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:22:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:22:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:22:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:22:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:22:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:22:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:22:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:22:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:22:42,510 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:22:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:22:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:22:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:22:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:22:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:22:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:22:42,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:22:42,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:22:42,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:22:42,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:22:42,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:22:42,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:22:42,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:22:42,513 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:22:42,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:22:42,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:22:42,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:22:42,513 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:22:42,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:22:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:22:42,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:22:43,655 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:22:43,655 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:22:43,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:22:43 BoogieIcfgContainer [2021-02-23 16:22:43,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:22:43,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:22:43,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:22:43,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:22:43,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:22:41" (1/3) ... [2021-02-23 16:22:43,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667deee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:22:43, skipping insertion in model container [2021-02-23 16:22:43,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:22:42" (2/3) ... [2021-02-23 16:22:43,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667deee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:22:43, skipping insertion in model container [2021-02-23 16:22:43,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:22:43" (3/3) ... [2021-02-23 16:22:43,666 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product13.cil.c [2021-02-23 16:22:43,673 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:22:43,679 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:22:43,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:22:43,721 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:22:43,722 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:22:43,722 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:22:43,722 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:22:43,722 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:22:43,722 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:22:43,723 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:22:43,723 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:22:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states. [2021-02-23 16:22:43,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:22:43,764 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:43,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:22:43,765 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:43,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:43,772 INFO L82 PathProgramCache]: Analyzing trace with hash 191098234, now seen corresponding path program 1 times [2021-02-23 16:22:43,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:43,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457886758] [2021-02-23 16:22:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:43,865 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,556 WARN L202 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:22:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:22:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:22:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:44,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:44,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:44,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457886758] [2021-02-23 16:22:44,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:44,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:22:44,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488395430] [2021-02-23 16:22:44,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:22:44,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:44,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:22:44,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:22:44,868 INFO L87 Difference]: Start difference. First operand 291 states. Second operand 3 states. [2021-02-23 16:22:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:46,456 INFO L93 Difference]: Finished difference Result 419 states and 501 transitions. [2021-02-23 16:22:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:22:46,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:22:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:46,473 INFO L225 Difference]: With dead ends: 419 [2021-02-23 16:22:46,473 INFO L226 Difference]: Without dead ends: 268 [2021-02-23 16:22:46,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:22:46,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-02-23 16:22:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 229. [2021-02-23 16:22:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2021-02-23 16:22:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2021-02-23 16:22:46,646 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 158 [2021-02-23 16:22:46,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:46,647 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2021-02-23 16:22:46,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:22:46,648 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2021-02-23 16:22:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:22:46,652 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:46,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:22:46,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:22:46,653 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:46,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1058296177, now seen corresponding path program 1 times [2021-02-23 16:22:46,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:46,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665864573] [2021-02-23 16:22:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:46,658 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:46,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:46,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:46,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:46,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:46,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:46,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,154 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:47,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:47,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:47,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:47,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:47,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:47,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:47,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:47,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:47,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:47,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:47,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:22:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:47,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:47,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:22:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:47,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:47,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:22:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:47,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:47,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:47,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665864573] [2021-02-23 16:22:47,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:47,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:22:47,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564650898] [2021-02-23 16:22:47,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:22:47,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:22:47,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:22:47,339 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand 4 states. [2021-02-23 16:22:48,137 WARN L202 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:22:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:48,996 INFO L93 Difference]: Finished difference Result 335 states and 375 transitions. [2021-02-23 16:22:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:22:48,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:22:48,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:49,000 INFO L225 Difference]: With dead ends: 335 [2021-02-23 16:22:49,000 INFO L226 Difference]: Without dead ends: 251 [2021-02-23 16:22:49,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:22:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-23 16:22:49,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-23 16:22:49,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 16:22:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2021-02-23 16:22:49,094 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 159 [2021-02-23 16:22:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:49,095 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2021-02-23 16:22:49,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:22:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2021-02-23 16:22:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 16:22:49,098 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:49,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:22:49,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:22:49,099 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:49,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:49,099 INFO L82 PathProgramCache]: Analyzing trace with hash 183006728, now seen corresponding path program 1 times [2021-02-23 16:22:49,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:49,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301999828] [2021-02-23 16:22:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:49,104 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:49,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:49,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:49,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:22:49,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,554 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:22:49,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:22:49,667 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:22:49,668 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:22:49,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:22:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:22:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-02-23 16:22:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:49,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:49,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:49,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301999828] [2021-02-23 16:22:49,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:49,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:22:49,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239998562] [2021-02-23 16:22:49,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:22:49,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:49,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:22:49,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:22:49,746 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 9 states. [2021-02-23 16:22:50,447 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:50,879 WARN L202 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:22:51,225 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:22:51,618 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:52,006 WARN L202 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:52,351 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:53,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:53,719 INFO L93 Difference]: Finished difference Result 355 states and 400 transitions. [2021-02-23 16:22:53,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:22:53,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2021-02-23 16:22:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:53,729 INFO L225 Difference]: With dead ends: 355 [2021-02-23 16:22:53,730 INFO L226 Difference]: Without dead ends: 251 [2021-02-23 16:22:53,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:22:53,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-02-23 16:22:53,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2021-02-23 16:22:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-02-23 16:22:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 233 transitions. [2021-02-23 16:22:53,828 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 233 transitions. Word has length 168 [2021-02-23 16:22:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:22:53,829 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 233 transitions. [2021-02-23 16:22:53,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:22:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 233 transitions. [2021-02-23 16:22:53,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 16:22:53,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:22:53,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:22:53,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:22:53,832 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:22:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:22:53,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1423256127, now seen corresponding path program 1 times [2021-02-23 16:22:53,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:22:53,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405054741] [2021-02-23 16:22:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:22:53,837 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:22:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:53,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:53,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:53,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:53,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:53,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:53,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:53,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:53,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:53,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:53,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:53,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:53,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:53,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:53,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:53,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:53,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,202 WARN L202 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:22:54,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:22:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:22:54,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:22:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:22:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:22:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:22:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:22:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:22:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-02-23 16:22:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:22:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:54,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:22:54,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:22:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:22:54,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:22:54,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:22:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:22:54,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405054741] [2021-02-23 16:22:54,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:22:54,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:22:54,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360818635] [2021-02-23 16:22:54,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:22:54,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:22:54,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:22:54,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:22:54,439 INFO L87 Difference]: Start difference. First operand 219 states and 233 transitions. Second operand 9 states. [2021-02-23 16:22:55,103 WARN L202 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:56,985 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:57,419 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:57,816 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:58,216 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:22:58,570 WARN L202 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:59,131 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:22:59,567 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:22:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:22:59,931 INFO L93 Difference]: Finished difference Result 494 states and 585 transitions. [2021-02-23 16:22:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:22:59,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2021-02-23 16:22:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:22:59,938 INFO L225 Difference]: With dead ends: 494 [2021-02-23 16:22:59,938 INFO L226 Difference]: Without dead ends: 390 [2021-02-23 16:22:59,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:22:59,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-02-23 16:23:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 315. [2021-02-23 16:23:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2021-02-23 16:23:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 346 transitions. [2021-02-23 16:23:00,076 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 346 transitions. Word has length 176 [2021-02-23 16:23:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:00,076 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 346 transitions. [2021-02-23 16:23:00,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:23:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 346 transitions. [2021-02-23 16:23:00,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-02-23 16:23:00,080 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:00,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:00,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:23:00,081 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:00,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:00,081 INFO L82 PathProgramCache]: Analyzing trace with hash 129557805, now seen corresponding path program 1 times [2021-02-23 16:23:00,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:00,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211121945] [2021-02-23 16:23:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:00,084 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:00,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:00,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:00,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:00,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:00,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,500 WARN L202 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:23:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:23:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:23:00,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:23:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:23:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:23:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:23:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-02-23 16:23:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:23:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-02-23 16:23:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:23:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-02-23 16:23:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-02-23 16:23:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-02-23 16:23:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:23:00,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:23:00,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:23:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:23:00,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211121945] [2021-02-23 16:23:00,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:23:00,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:23:00,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036192076] [2021-02-23 16:23:00,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:23:00,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:23:00,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:23:00,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:23:00,700 INFO L87 Difference]: Start difference. First operand 315 states and 346 transitions. Second operand 6 states. [2021-02-23 16:23:01,326 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:23:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:23:02,048 INFO L93 Difference]: Finished difference Result 484 states and 550 transitions. [2021-02-23 16:23:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:23:02,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2021-02-23 16:23:02,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:23:02,052 INFO L225 Difference]: With dead ends: 484 [2021-02-23 16:23:02,052 INFO L226 Difference]: Without dead ends: 284 [2021-02-23 16:23:02,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:23:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-23 16:23:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 263. [2021-02-23 16:23:02,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2021-02-23 16:23:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 278 transitions. [2021-02-23 16:23:02,169 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 278 transitions. Word has length 186 [2021-02-23 16:23:02,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:23:02,170 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 278 transitions. [2021-02-23 16:23:02,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:23:02,170 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 278 transitions. [2021-02-23 16:23:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-23 16:23:02,172 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:23:02,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:23:02,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:23:02,173 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:23:02,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:23:02,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1108331973, now seen corresponding path program 1 times [2021-02-23 16:23:02,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:23:02,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677621196] [2021-02-23 16:23:02,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:23:02,177 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:23:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:23:02,258 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:23:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:23:02,333 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:23:02,513 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:23:02,513 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:23:02,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:23:02,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:23:02 BoogieIcfgContainer [2021-02-23 16:23:02,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:23:02,537 INFO L168 Benchmark]: Toolchain (without parser) took 20917.70 ms. Allocated memory was 151.0 MB in the beginning and 399.5 MB in the end (delta: 248.5 MB). Free memory was 125.7 MB in the beginning and 308.1 MB in the end (delta: -182.4 MB). Peak memory consumption was 66.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:02,538 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:23:02,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 104.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:02,539 INFO L168 Benchmark]: Boogie Preprocessor took 86.77 ms. Allocated memory is still 151.0 MB. Free memory was 104.7 MB in the beginning and 100.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:02,539 INFO L168 Benchmark]: RCFGBuilder took 1278.43 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.8 MB in the beginning and 118.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:02,540 INFO L168 Benchmark]: TraceAbstraction took 18876.66 ms. Allocated memory was 181.4 MB in the beginning and 399.5 MB in the end (delta: 218.1 MB). Free memory was 117.9 MB in the beginning and 308.1 MB in the end (delta: -190.2 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2021-02-23 16:23:02,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 653.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 104.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.77 ms. Allocated memory is still 151.0 MB. Free memory was 104.7 MB in the beginning and 100.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1278.43 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.8 MB in the beginning and 118.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18876.66 ms. Allocated memory was 181.4 MB in the beginning and 399.5 MB in the end (delta: 218.1 MB). Free memory was 117.9 MB in the beginning and 308.1 MB in the end (delta: -190.2 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 170]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L175] int cleanupTimeShifts = 4; [L277] int pumpRunning = 0; [L278] int systemActive = 1; [L696] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L251] int retValue_acc ; [L252] int tmp ; [L256] FCALL select_helpers() [L257] FCALL select_features() [L258] CALL, EXPR valid_product() [L157] int retValue_acc ; [L160] retValue_acc = 1 [L161] return (retValue_acc); [L258] RET, EXPR valid_product() [L258] tmp = valid_product() [L260] COND TRUE \read(tmp) [L262] FCALL setup() [L263] CALL runTest() [L245] CALL test() [L463] int splverifierCounter ; [L464] int tmp ; [L465] int tmp___0 ; [L466] int tmp___1 ; [L467] int tmp___2 ; [L470] splverifierCounter = 0 [L472] COND TRUE 1 [L474] COND TRUE splverifierCounter < 4 [L480] tmp = __VERIFIER_nondet_int() [L482] COND TRUE \read(tmp) [L484] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L484] RET waterRise() [L490] tmp___0 = __VERIFIER_nondet_int() [L492] COND FALSE !(\read(tmp___0)) [L500] tmp___2 = __VERIFIER_nondet_int() [L502] COND TRUE \read(tmp___2) [L515] CALL timeShift() [L285] COND FALSE !(\read(pumpRunning)) [L292] COND TRUE \read(systemActive) [L294] CALL processEnvironment() [L314] int tmp ; [L317] COND FALSE !(\read(pumpRunning)) [L332] FCALL processEnvironment__wrappee__methaneQuery() [L294] RET processEnvironment() [L300] CALL __utac_acc__Specification3_spec__1() [L429] int tmp ; [L430] int tmp___0 ; [L431] int tmp___1 ; [L435] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L435] RET, EXPR isMethaneLevelCritical() [L435] tmp = isMethaneLevelCritical() [L437] COND FALSE !(\read(tmp)) [L441] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L441] RET, EXPR getWaterLevel() [L441] tmp___0 = getWaterLevel() [L443] COND TRUE tmp___0 == 2 [L445] CALL, EXPR isPumpRunning() [L383] int retValue_acc ; [L386] retValue_acc = pumpRunning [L387] return (retValue_acc); [L445] RET, EXPR isPumpRunning() [L445] tmp___1 = isPumpRunning() [L447] COND FALSE !(\read(tmp___1)) [L451] CALL __automaton_fail() [L170] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 608 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1021 SDtfs, 1322 SDslu, 1281 SDs, 0 SdLazy, 2342 SolverSat, 392 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=315occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 199 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...