/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 10:39:50,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 10:39:50,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 10:39:50,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 10:39:50,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 10:39:50,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 10:39:50,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 10:39:50,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 10:39:50,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 10:39:50,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 10:39:50,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 10:39:50,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 10:39:50,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 10:39:50,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 10:39:50,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 10:39:50,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 10:39:50,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 10:39:50,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 10:39:50,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 10:39:50,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 10:39:50,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 10:39:50,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 10:39:50,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 10:39:50,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 10:39:50,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 10:39:50,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 10:39:50,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 10:39:50,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 10:39:50,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 10:39:50,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 10:39:50,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 10:39:50,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 10:39:50,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 10:39:50,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 10:39:50,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 10:39:50,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 10:39:50,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 10:39:50,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 10:39:50,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 10:39:50,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 10:39:50,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 10:39:50,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 10:39:50,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 10:39:50,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 10:39:50,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 10:39:50,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 10:39:50,262 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 10:39:50,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 10:39:50,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 10:39:50,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 10:39:50,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 10:39:50,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 10:39:50,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 10:39:50,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 10:39:50,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 10:39:50,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 10:39:50,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 10:39:50,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 10:39:50,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 10:39:50,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 10:39:50,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 10:39:50,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 10:39:50,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 10:39:50,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 10:39:50,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 10:39:50,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 10:39:50,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 10:39:50,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 10:39:50,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 10:39:50,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 10:39:50,268 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 10:39:50,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 10:39:50,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 10:39:50,556 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 10:39:50,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 10:39:50,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 10:39:50,562 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 10:39:50,563 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-07 10:39:50,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d45987ea/7e2caf3e80d0470c96e4b072685f66dc/FLAGb69282fb2 [2020-07-07 10:39:51,198 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 10:39:51,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-07 10:39:51,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d45987ea/7e2caf3e80d0470c96e4b072685f66dc/FLAGb69282fb2 [2020-07-07 10:39:51,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d45987ea/7e2caf3e80d0470c96e4b072685f66dc [2020-07-07 10:39:51,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 10:39:51,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 10:39:51,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 10:39:51,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 10:39:51,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 10:39:51,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:39:51" (1/1) ... [2020-07-07 10:39:51,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78308f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:51, skipping insertion in model container [2020-07-07 10:39:51,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 10:39:51" (1/1) ... [2020-07-07 10:39:51,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 10:39:51,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 10:39:52,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:39:52,092 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 10:39:52,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 10:39:52,211 INFO L208 MainTranslator]: Completed translation [2020-07-07 10:39:52,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52 WrapperNode [2020-07-07 10:39:52,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 10:39:52,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 10:39:52,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 10:39:52,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 10:39:52,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (1/1) ... [2020-07-07 10:39:52,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (1/1) ... [2020-07-07 10:39:52,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (1/1) ... [2020-07-07 10:39:52,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (1/1) ... [2020-07-07 10:39:52,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (1/1) ... [2020-07-07 10:39:52,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (1/1) ... [2020-07-07 10:39:52,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (1/1) ... [2020-07-07 10:39:52,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 10:39:52,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 10:39:52,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 10:39:52,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 10:39:52,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (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 [2020-07-07 10:39:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 10:39:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 10:39:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-07 10:39:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-07 10:39:52,392 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-07 10:39:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-07 10:39:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-07 10:39:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 10:39:52,393 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-07 10:39:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-07 10:39:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-07 10:39:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-07 10:39:52,394 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 10:39:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-07 10:39:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-07 10:39:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-07 10:39:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-07 10:39:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-07 10:39:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-07 10:39:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-07 10:39:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-07 10:39:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-07 10:39:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-07 10:39:52,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-07 10:39:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-07 10:39:52,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-07 10:39:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-07 10:39:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-07 10:39:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-07 10:39:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-07 10:39:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-07 10:39:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-07 10:39:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-07 10:39:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-07 10:39:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-07 10:39:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-07 10:39:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-07 10:39:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-07 10:39:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-07 10:39:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-07 10:39:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-07 10:39:52,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-07 10:39:52,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 10:39:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 10:39:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 10:39:52,403 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-07 10:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-07 10:39:52,404 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-07 10:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-07 10:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-07 10:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-07 10:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-07 10:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-07 10:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-07 10:39:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-07 10:39:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-07 10:39:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-07 10:39:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 10:39:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-07 10:39:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-07 10:39:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-07 10:39:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-07 10:39:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-07 10:39:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-07 10:39:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-07 10:39:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-07 10:39:52,407 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-07 10:39:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-07 10:39:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-07 10:39:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-07 10:39:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-07 10:39:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-07 10:39:52,408 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-07 10:39:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-07 10:39:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-07 10:39:52,409 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-07 10:39:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 10:39:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-07 10:39:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-07 10:39:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 10:39:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 10:39:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-07 10:39:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 10:39:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 10:39:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 10:39:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 10:39:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-07 10:39:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 10:39:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-07 10:39:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-07 10:39:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 10:39:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-07 10:39:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-07 10:39:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-07 10:39:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-07 10:39:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 10:39:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 10:39:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 10:39:53,463 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 10:39:53,463 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 10:39:53,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:39:53 BoogieIcfgContainer [2020-07-07 10:39:53,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 10:39:53,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 10:39:53,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 10:39:53,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 10:39:53,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 10:39:51" (1/3) ... [2020-07-07 10:39:53,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1698d083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:39:53, skipping insertion in model container [2020-07-07 10:39:53,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 10:39:52" (2/3) ... [2020-07-07 10:39:53,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1698d083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 10:39:53, skipping insertion in model container [2020-07-07 10:39:53,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 10:39:53" (3/3) ... [2020-07-07 10:39:53,478 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-07-07 10:39:53,489 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 10:39:53,498 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 10:39:53,512 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 10:39:53,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 10:39:53,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 10:39:53,539 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 10:39:53,539 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 10:39:53,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 10:39:53,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 10:39:53,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 10:39:53,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 10:39:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-07-07 10:39:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-07 10:39:53,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:39:53,576 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] [2020-07-07 10:39:53,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:39:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:39:53,584 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-07-07 10:39:53,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:39:53,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781969088] [2020-07-07 10:39:53,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:39:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:54,247 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:39:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:39:54,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781969088] [2020-07-07 10:39:54,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:39:54,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 10:39:54,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917811140] [2020-07-07 10:39:54,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 10:39:54,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:39:54,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 10:39:54,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 10:39:54,368 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-07-07 10:39:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:39:55,661 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-07-07 10:39:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 10:39:55,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-07 10:39:55,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:39:55,678 INFO L225 Difference]: With dead ends: 338 [2020-07-07 10:39:55,678 INFO L226 Difference]: Without dead ends: 182 [2020-07-07 10:39:55,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 10:39:55,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-07-07 10:39:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-07-07 10:39:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-07 10:39:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-07-07 10:39:55,781 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-07-07 10:39:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:39:55,782 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-07-07 10:39:55,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 10:39:55,782 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-07-07 10:39:55,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-07 10:39:55,786 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:39:55,786 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] [2020-07-07 10:39:55,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 10:39:55,787 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:39:55,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:39:55,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-07-07 10:39:55,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:39:55,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893420150] [2020-07-07 10:39:55,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:39:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:56,142 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:39:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:39:56,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893420150] [2020-07-07 10:39:56,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:39:56,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 10:39:56,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533506105] [2020-07-07 10:39:56,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 10:39:56,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:39:56,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 10:39:56,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 10:39:56,240 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-07-07 10:39:56,672 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:39:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:39:57,656 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-07-07 10:39:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 10:39:57,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-07 10:39:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:39:57,660 INFO L225 Difference]: With dead ends: 267 [2020-07-07 10:39:57,660 INFO L226 Difference]: Without dead ends: 166 [2020-07-07 10:39:57,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 10:39:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-07 10:39:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-07-07 10:39:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-07 10:39:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-07-07 10:39:57,726 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-07-07 10:39:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:39:57,726 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-07-07 10:39:57,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 10:39:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-07-07 10:39:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-07 10:39:57,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:39:57,729 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] [2020-07-07 10:39:57,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 10:39:57,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:39:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:39:57,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-07-07 10:39:57,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:39:57,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573374447] [2020-07-07 10:39:57,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:39:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:58,050 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:39:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:39:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:39:58,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573374447] [2020-07-07 10:39:58,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:39:58,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 10:39:58,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111707524] [2020-07-07 10:39:58,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 10:39:58,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:39:58,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 10:39:58,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 10:39:58,177 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-07-07 10:39:58,527 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 10:39:58,843 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-07 10:39:59,121 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:39:59,340 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:40:00,649 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-07-07 10:40:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 10:40:00,650 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-07-07 10:40:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:40:00,653 INFO L225 Difference]: With dead ends: 280 [2020-07-07 10:40:00,653 INFO L226 Difference]: Without dead ends: 166 [2020-07-07 10:40:00,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-07 10:40:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-07 10:40:00,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-07-07 10:40:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-07 10:40:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-07-07 10:40:00,695 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-07-07 10:40:00,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:40:00,695 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-07-07 10:40:00,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 10:40:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-07-07 10:40:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-07 10:40:00,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:40:00,699 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] [2020-07-07 10:40:00,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 10:40:00,699 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:40:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:40:00,700 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-07-07 10:40:00,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:40:00,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157125682] [2020-07-07 10:40:00,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:40:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:00,968 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:40:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:40:01,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157125682] [2020-07-07 10:40:01,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:40:01,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 10:40:01,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700280291] [2020-07-07 10:40:01,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 10:40:01,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:40:01,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 10:40:01,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-07 10:40:01,119 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 6 states. [2020-07-07 10:40:01,455 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 10:40:02,601 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:40:03,379 INFO L93 Difference]: Finished difference Result 383 states and 475 transitions. [2020-07-07 10:40:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 10:40:03,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-07-07 10:40:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:40:03,383 INFO L225 Difference]: With dead ends: 383 [2020-07-07 10:40:03,383 INFO L226 Difference]: Without dead ends: 269 [2020-07-07 10:40:03,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-07-07 10:40:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-07-07 10:40:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-07-07 10:40:03,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-07-07 10:40:03,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-07-07 10:40:03,449 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 70 [2020-07-07 10:40:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:40:03,450 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-07-07 10:40:03,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 10:40:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-07-07 10:40:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-07 10:40:03,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:40:03,457 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] [2020-07-07 10:40:03,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 10:40:03,458 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:40:03,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:40:03,458 INFO L82 PathProgramCache]: Analyzing trace with hash 89608959, now seen corresponding path program 1 times [2020-07-07 10:40:03,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:40:03,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578607848] [2020-07-07 10:40:03,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:40:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,786 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:40:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:40:03,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578607848] [2020-07-07 10:40:03,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:40:03,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 10:40:03,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091857378] [2020-07-07 10:40:03,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 10:40:03,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:40:03,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 10:40:03,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-07 10:40:03,988 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 11 states. [2020-07-07 10:40:04,539 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:04,814 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:05,036 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:05,758 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:06,035 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-07 10:40:06,286 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:06,537 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:40:07,667 INFO L93 Difference]: Finished difference Result 470 states and 561 transitions. [2020-07-07 10:40:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 10:40:07,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-07-07 10:40:07,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:40:07,670 INFO L225 Difference]: With dead ends: 470 [2020-07-07 10:40:07,670 INFO L226 Difference]: Without dead ends: 268 [2020-07-07 10:40:07,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-07-07 10:40:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-07 10:40:07,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 231. [2020-07-07 10:40:07,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-07 10:40:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2020-07-07 10:40:07,717 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 84 [2020-07-07 10:40:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:40:07,718 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2020-07-07 10:40:07,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 10:40:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2020-07-07 10:40:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-07 10:40:07,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:40:07,720 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] [2020-07-07 10:40:07,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 10:40:07,720 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:40:07,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:40:07,721 INFO L82 PathProgramCache]: Analyzing trace with hash -611990915, now seen corresponding path program 1 times [2020-07-07 10:40:07,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:40:07,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099111815] [2020-07-07 10:40:07,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:40:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,020 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:40:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:40:08,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099111815] [2020-07-07 10:40:08,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:40:08,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 10:40:08,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169185506] [2020-07-07 10:40:08,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 10:40:08,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:40:08,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 10:40:08,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 10:40:08,136 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand 8 states. [2020-07-07 10:40:09,079 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 10:40:10,344 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:10,608 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:10,841 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:11,062 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 10:40:11,352 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:40:12,660 INFO L93 Difference]: Finished difference Result 691 states and 839 transitions. [2020-07-07 10:40:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 10:40:12,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-07-07 10:40:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:40:12,665 INFO L225 Difference]: With dead ends: 691 [2020-07-07 10:40:12,665 INFO L226 Difference]: Without dead ends: 484 [2020-07-07 10:40:12,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-07-07 10:40:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-07-07 10:40:12,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 417. [2020-07-07 10:40:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-07 10:40:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 472 transitions. [2020-07-07 10:40:12,743 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 472 transitions. Word has length 84 [2020-07-07 10:40:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:40:12,743 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 472 transitions. [2020-07-07 10:40:12,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 10:40:12,743 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 472 transitions. [2020-07-07 10:40:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-07 10:40:12,745 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:40:12,745 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] [2020-07-07 10:40:12,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 10:40:12,746 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:40:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:40:12,746 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-07-07 10:40:12,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:40:12,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945720232] [2020-07-07 10:40:12,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:40:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,021 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:40:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:40:13,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945720232] [2020-07-07 10:40:13,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:40:13,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 10:40:13,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031158920] [2020-07-07 10:40:13,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 10:40:13,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:40:13,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 10:40:13,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-07 10:40:13,135 INFO L87 Difference]: Start difference. First operand 417 states and 472 transitions. Second operand 9 states. [2020-07-07 10:40:13,531 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 10:40:14,673 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:14,881 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 10:40:15,132 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:15,374 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:15,636 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:40:16,757 INFO L93 Difference]: Finished difference Result 526 states and 652 transitions. [2020-07-07 10:40:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 10:40:16,757 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-07-07 10:40:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:40:16,762 INFO L225 Difference]: With dead ends: 526 [2020-07-07 10:40:16,762 INFO L226 Difference]: Without dead ends: 523 [2020-07-07 10:40:16,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-07-07 10:40:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-07-07 10:40:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 417. [2020-07-07 10:40:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-07 10:40:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 471 transitions. [2020-07-07 10:40:16,835 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 471 transitions. Word has length 88 [2020-07-07 10:40:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:40:16,835 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 471 transitions. [2020-07-07 10:40:16,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 10:40:16,836 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 471 transitions. [2020-07-07 10:40:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 10:40:16,837 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:40:16,837 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] [2020-07-07 10:40:16,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 10:40:16,838 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:40:16,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:40:16,838 INFO L82 PathProgramCache]: Analyzing trace with hash -581525316, now seen corresponding path program 1 times [2020-07-07 10:40:16,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:40:16,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974902931] [2020-07-07 10:40:16,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:40:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,135 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:40:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:40:17,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974902931] [2020-07-07 10:40:17,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:40:17,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 10:40:17,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814809119] [2020-07-07 10:40:17,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 10:40:17,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:40:17,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 10:40:17,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-07 10:40:17,326 INFO L87 Difference]: Start difference. First operand 417 states and 471 transitions. Second operand 11 states. [2020-07-07 10:40:17,868 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:18,110 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:18,339 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:18,988 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:19,244 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:19,487 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:20,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:40:20,768 INFO L93 Difference]: Finished difference Result 924 states and 1122 transitions. [2020-07-07 10:40:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 10:40:20,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-07-07 10:40:20,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:40:20,775 INFO L225 Difference]: With dead ends: 924 [2020-07-07 10:40:20,776 INFO L226 Difference]: Without dead ends: 531 [2020-07-07 10:40:20,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-07-07 10:40:20,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-07-07 10:40:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 425. [2020-07-07 10:40:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-07 10:40:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-07-07 10:40:20,886 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-07-07 10:40:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:40:20,887 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-07-07 10:40:20,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 10:40:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-07-07 10:40:20,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 10:40:20,891 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:40:20,891 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] [2020-07-07 10:40:20,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 10:40:20,891 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:40:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:40:20,892 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-07-07 10:40:20,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:40:20,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347649875] [2020-07-07 10:40:20,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:40:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,166 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:40:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:40:21,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347649875] [2020-07-07 10:40:21,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:40:21,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 10:40:21,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177095311] [2020-07-07 10:40:21,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 10:40:21,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:40:21,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 10:40:21,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-07 10:40:21,302 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 9 states. [2020-07-07 10:40:22,285 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-07 10:40:22,550 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-07 10:40:22,801 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:23,039 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-07 10:40:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:40:24,302 INFO L93 Difference]: Finished difference Result 926 states and 1120 transitions. [2020-07-07 10:40:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 10:40:24,303 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-07-07 10:40:24,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:40:24,307 INFO L225 Difference]: With dead ends: 926 [2020-07-07 10:40:24,308 INFO L226 Difference]: Without dead ends: 525 [2020-07-07 10:40:24,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-07 10:40:24,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-07-07 10:40:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-07-07 10:40:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-07 10:40:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 477 transitions. [2020-07-07 10:40:24,414 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 477 transitions. Word has length 89 [2020-07-07 10:40:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:40:24,415 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 477 transitions. [2020-07-07 10:40:24,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 10:40:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 477 transitions. [2020-07-07 10:40:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 10:40:24,418 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:40:24,418 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] [2020-07-07 10:40:24,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 10:40:24,419 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:40:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:40:24,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-07-07 10:40:24,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:40:24,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730927890] [2020-07-07 10:40:24,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:40:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,720 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-07 10:40:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 10:40:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 10:40:24,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730927890] [2020-07-07 10:40:24,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 10:40:24,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 10:40:24,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627795069] [2020-07-07 10:40:24,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 10:40:24,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 10:40:24,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 10:40:24,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 10:40:24,866 INFO L87 Difference]: Start difference. First operand 425 states and 477 transitions. Second operand 7 states. [2020-07-07 10:40:25,767 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 10:40:26,253 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-07 10:40:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 10:40:28,599 INFO L93 Difference]: Finished difference Result 1286 states and 1634 transitions. [2020-07-07 10:40:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 10:40:28,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-07-07 10:40:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 10:40:28,605 INFO L225 Difference]: With dead ends: 1286 [2020-07-07 10:40:28,606 INFO L226 Difference]: Without dead ends: 885 [2020-07-07 10:40:28,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-07-07 10:40:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-07-07 10:40:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-07-07 10:40:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-07-07 10:40:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 895 transitions. [2020-07-07 10:40:28,750 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 895 transitions. Word has length 89 [2020-07-07 10:40:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 10:40:28,750 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 895 transitions. [2020-07-07 10:40:28,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 10:40:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 895 transitions. [2020-07-07 10:40:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-07 10:40:28,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 10:40:28,753 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] [2020-07-07 10:40:28,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 10:40:28,753 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 10:40:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 10:40:28,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-07-07 10:40:28,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 10:40:28,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027737863] [2020-07-07 10:40:28,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 10:40:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:40:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 10:40:28,934 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 10:40:28,935 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 10:40:28,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 10:40:29,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 10:40:29 BoogieIcfgContainer [2020-07-07 10:40:29,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 10:40:29,107 INFO L168 Benchmark]: Toolchain (without parser) took 37538.80 ms. Allocated memory was 137.9 MB in the beginning and 674.8 MB in the end (delta: 536.9 MB). Free memory was 100.3 MB in the beginning and 226.2 MB in the end (delta: -126.0 MB). Peak memory consumption was 410.9 MB. Max. memory is 7.1 GB. [2020-07-07 10:40:29,107 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 10:40:29,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.63 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 167.8 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-07-07 10:40:29,109 INFO L168 Benchmark]: Boogie Preprocessor took 106.24 ms. Allocated memory is still 200.8 MB. Free memory was 167.8 MB in the beginning and 163.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-07 10:40:29,110 INFO L168 Benchmark]: RCFGBuilder took 1150.21 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 163.6 MB in the beginning and 191.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. [2020-07-07 10:40:29,110 INFO L168 Benchmark]: TraceAbstraction took 35632.34 ms. Allocated memory was 230.7 MB in the beginning and 674.8 MB in the end (delta: 444.1 MB). Free memory was 191.4 MB in the beginning and 226.2 MB in the end (delta: -34.9 MB). Peak memory consumption was 409.2 MB. Max. memory is 7.1 GB. [2020-07-07 10:40:29,113 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.63 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 167.8 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.24 ms. Allocated memory is still 200.8 MB. Free memory was 167.8 MB in the beginning and 163.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1150.21 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 163.6 MB in the beginning and 191.4 MB in the end (delta: -27.8 MB). Peak memory consumption was 85.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35632.34 ms. Allocated memory was 230.7 MB in the beginning and 674.8 MB in the end (delta: 444.1 MB). Free memory was 191.4 MB in the beginning and 226.2 MB in the end (delta: -34.9 MB). Peak memory consumption was 409.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=170, \old(head)=164, \old(head)=176, \old(methaneLevelCritical)=149, \old(pumpRunning)=138, \old(systemActive)=137, \old(waterLevel)=147, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L126] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L127] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L128] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L132] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L133] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L112] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L155] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L157] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L167] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L177] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L177] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=1, tmp___2=0, waterLevel=2] [L200] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L237] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L246] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L318] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L321] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L336] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L292] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L295] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L310] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L266] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L969] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L421] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L271] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L275] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L346] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L275] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L310] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L336] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L246] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L252] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L497] int tmp ; [L498] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L502] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L506] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L506] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L510] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L216] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 35.3s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1333 SDtfs, 2192 SDslu, 1440 SDs, 0 SdLazy, 6734 SolverSat, 1451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 270 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 670 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 831 NumberOfCodeBlocks, 831 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 728 ConstructedInterpolants, 0 QuantifiedInterpolants, 230433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...