/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 20:28:53,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 20:28:53,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 20:28:53,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 20:28:53,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 20:28:53,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 20:28:53,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 20:28:53,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 20:28:53,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 20:28:53,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 20:28:53,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 20:28:53,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 20:28:53,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 20:28:53,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 20:28:53,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 20:28:53,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 20:28:53,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 20:28:53,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 20:28:53,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 20:28:53,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 20:28:53,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 20:28:53,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 20:28:53,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 20:28:53,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 20:28:53,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 20:28:53,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 20:28:53,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 20:28:53,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 20:28:53,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 20:28:53,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 20:28:53,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 20:28:53,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 20:28:53,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 20:28:53,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 20:28:53,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 20:28:53,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 20:28:53,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 20:28:53,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 20:28:53,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 20:28:53,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 20:28:53,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 20:28:53,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 20:28:53,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 20:28:53,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 20:28:53,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 20:28:53,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 20:28:53,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 20:28:53,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 20:28:53,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 20:28:53,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 20:28:53,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 20:28:53,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 20:28:53,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 20:28:53,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 20:28:53,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 20:28:53,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 20:28:53,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 20:28:53,194 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 20:28:53,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 20:28:53,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 20:28:53,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 20:28:53,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 20:28:53,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 20:28:53,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 20:28:53,195 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 20:28:53,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 20:28:53,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 20:28:53,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 20:28:53,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 20:28:53,672 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 20:28:53,674 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-09-04 20:28:53,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91024d3fe/97cc6b88075c4dec94a1c101d469402c/FLAG718095b9c [2020-09-04 20:28:54,355 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 20:28:54,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-09-04 20:28:54,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91024d3fe/97cc6b88075c4dec94a1c101d469402c/FLAG718095b9c [2020-09-04 20:28:54,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91024d3fe/97cc6b88075c4dec94a1c101d469402c [2020-09-04 20:28:54,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 20:28:54,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 20:28:54,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 20:28:54,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 20:28:54,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 20:28:54,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 08:28:54" (1/1) ... [2020-09-04 20:28:54,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d90d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:54, skipping insertion in model container [2020-09-04 20:28:54,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 08:28:54" (1/1) ... [2020-09-04 20:28:54,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 20:28:54,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 20:28:55,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 20:28:55,269 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 20:28:55,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 20:28:55,445 INFO L208 MainTranslator]: Completed translation [2020-09-04 20:28:55,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55 WrapperNode [2020-09-04 20:28:55,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 20:28:55,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 20:28:55,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 20:28:55,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 20:28:55,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (1/1) ... [2020-09-04 20:28:55,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (1/1) ... [2020-09-04 20:28:55,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (1/1) ... [2020-09-04 20:28:55,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (1/1) ... [2020-09-04 20:28:55,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (1/1) ... [2020-09-04 20:28:55,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (1/1) ... [2020-09-04 20:28:55,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (1/1) ... [2020-09-04 20:28:55,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 20:28:55,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 20:28:55,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 20:28:55,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 20:28:55,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 20:28:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 20:28:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 20:28:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 20:28:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 20:28:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 20:28:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 20:28:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 20:28:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 20:28:55,660 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 20:28:55,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 20:28:55,660 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 20:28:55,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 20:28:55,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 20:28:55,660 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 20:28:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 20:28:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 20:28:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 20:28:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 20:28:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 20:28:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 20:28:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 20:28:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-04 20:28:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 20:28:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 20:28:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 20:28:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 20:28:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 20:28:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 20:28:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 20:28:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 20:28:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 20:28:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 20:28:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 20:28:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 20:28:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 20:28:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 20:28:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 20:28:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 20:28:55,668 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 20:28:55,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 20:28:55,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 20:28:55,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-04 20:28:55,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 20:28:55,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 20:28:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 20:28:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 20:28:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 20:28:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 20:28:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 20:28:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 20:28:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 20:28:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 20:28:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 20:28:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 20:28:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 20:28:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 20:28:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 20:28:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 20:28:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 20:28:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 20:28:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 20:28:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 20:28:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 20:28:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 20:28:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-04 20:28:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 20:28:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 20:28:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 20:28:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 20:28:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 20:28:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 20:28:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 20:28:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-04 20:28:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-04 20:28:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-09-04 20:28:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 20:28:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 20:28:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 20:28:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 20:28:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 20:28:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 20:28:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 20:28:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 20:28:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 20:28:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 20:28:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 20:28:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 20:28:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 20:28:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 20:28:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 20:28:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 20:28:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 20:28:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 20:28:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 20:28:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 20:28:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 20:28:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 20:28:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 20:28:56,923 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 20:28:56,924 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 20:28:56,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 08:28:56 BoogieIcfgContainer [2020-09-04 20:28:56,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 20:28:56,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 20:28:56,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 20:28:56,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 20:28:56,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 08:28:54" (1/3) ... [2020-09-04 20:28:56,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790bb500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 08:28:56, skipping insertion in model container [2020-09-04 20:28:56,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 08:28:55" (2/3) ... [2020-09-04 20:28:56,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790bb500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 08:28:56, skipping insertion in model container [2020-09-04 20:28:56,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 08:28:56" (3/3) ... [2020-09-04 20:28:56,941 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-09-04 20:28:56,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 20:28:56,963 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 20:28:56,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 20:28:57,012 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 20:28:57,013 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 20:28:57,013 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 20:28:57,013 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 20:28:57,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 20:28:57,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 20:28:57,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 20:28:57,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 20:28:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states. [2020-09-04 20:28:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 20:28:57,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:28:57,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:28:57,061 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:28:57,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:28:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1442746419, now seen corresponding path program 1 times [2020-09-04 20:28:57,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:28:57,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9475498] [2020-09-04 20:28:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:28:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:57,845 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:28:57,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:28:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:57,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:28:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:57,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:28:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:28:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:57,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:28:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:57,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:28:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:57,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 20:28:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:28:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:28:58,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9475498] [2020-09-04 20:28:58,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:28:58,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 20:28:58,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999466128] [2020-09-04 20:28:58,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 20:28:58,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:28:58,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 20:28:58,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 20:28:58,042 INFO L87 Difference]: Start difference. First operand 336 states. Second operand 3 states. [2020-09-04 20:28:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:28:59,542 INFO L93 Difference]: Finished difference Result 540 states and 643 transitions. [2020-09-04 20:28:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 20:28:59,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 20:28:59,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:28:59,565 INFO L225 Difference]: With dead ends: 540 [2020-09-04 20:28:59,566 INFO L226 Difference]: Without dead ends: 329 [2020-09-04 20:28:59,572 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 [2020-09-04 20:28:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-09-04 20:28:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 285. [2020-09-04 20:28:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-09-04 20:28:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 312 transitions. [2020-09-04 20:28:59,730 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 312 transitions. Word has length 142 [2020-09-04 20:28:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:28:59,731 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 312 transitions. [2020-09-04 20:28:59,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 20:28:59,731 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 312 transitions. [2020-09-04 20:28:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 20:28:59,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:28:59,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:28:59,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 20:28:59,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:28:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:28:59,738 INFO L82 PathProgramCache]: Analyzing trace with hash -221358713, now seen corresponding path program 1 times [2020-09-04 20:28:59,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:28:59,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546610683] [2020-09-04 20:28:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:28:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,227 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:00,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 20:29:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 20:29:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:00,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546610683] [2020-09-04 20:29:00,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:00,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 20:29:00,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440228133] [2020-09-04 20:29:00,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 20:29:00,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:00,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 20:29:00,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 20:29:00,308 INFO L87 Difference]: Start difference. First operand 285 states and 312 transitions. Second operand 4 states. [2020-09-04 20:29:00,984 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:02,264 INFO L93 Difference]: Finished difference Result 453 states and 514 transitions. [2020-09-04 20:29:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 20:29:02,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 20:29:02,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:02,270 INFO L225 Difference]: With dead ends: 453 [2020-09-04 20:29:02,270 INFO L226 Difference]: Without dead ends: 312 [2020-09-04 20:29:02,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 20:29:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-04 20:29:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 275. [2020-09-04 20:29:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-04 20:29:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 299 transitions. [2020-09-04 20:29:02,359 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 299 transitions. Word has length 143 [2020-09-04 20:29:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:02,359 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 299 transitions. [2020-09-04 20:29:02,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 20:29:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 299 transitions. [2020-09-04 20:29:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 20:29:02,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:02,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:02,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 20:29:02,363 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash 983862452, now seen corresponding path program 1 times [2020-09-04 20:29:02,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:02,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824540227] [2020-09-04 20:29:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:02,784 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:02,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 20:29:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 20:29:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 20:29:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:03,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824540227] [2020-09-04 20:29:03,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:03,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 20:29:03,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792201288] [2020-09-04 20:29:03,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 20:29:03,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:03,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 20:29:03,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 20:29:03,039 INFO L87 Difference]: Start difference. First operand 275 states and 299 transitions. Second operand 10 states. [2020-09-04 20:29:03,710 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:04,176 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:04,425 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 20:29:04,725 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:05,035 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:05,329 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:07,278 INFO L93 Difference]: Finished difference Result 499 states and 576 transitions. [2020-09-04 20:29:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 20:29:07,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 20:29:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:07,291 INFO L225 Difference]: With dead ends: 499 [2020-09-04 20:29:07,291 INFO L226 Difference]: Without dead ends: 334 [2020-09-04 20:29:07,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-04 20:29:07,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-09-04 20:29:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 275. [2020-09-04 20:29:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-04 20:29:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 298 transitions. [2020-09-04 20:29:07,372 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 298 transitions. Word has length 156 [2020-09-04 20:29:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:07,373 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 298 transitions. [2020-09-04 20:29:07,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 20:29:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 298 transitions. [2020-09-04 20:29:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-04 20:29:07,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:07,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:07,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 20:29:07,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash -311994909, now seen corresponding path program 1 times [2020-09-04 20:29:07,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:07,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495217157] [2020-09-04 20:29:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,846 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:07,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 20:29:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 20:29:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-09-04 20:29:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:07,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 20:29:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:08,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495217157] [2020-09-04 20:29:08,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:08,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 20:29:08,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039650843] [2020-09-04 20:29:08,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 20:29:08,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:08,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 20:29:08,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 20:29:08,040 INFO L87 Difference]: Start difference. First operand 275 states and 298 transitions. Second operand 7 states. [2020-09-04 20:29:08,478 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:10,091 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:11,120 INFO L93 Difference]: Finished difference Result 685 states and 813 transitions. [2020-09-04 20:29:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 20:29:11,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-09-04 20:29:11,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:11,129 INFO L225 Difference]: With dead ends: 685 [2020-09-04 20:29:11,130 INFO L226 Difference]: Without dead ends: 520 [2020-09-04 20:29:11,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-04 20:29:11,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-09-04 20:29:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 393. [2020-09-04 20:29:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-09-04 20:29:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 423 transitions. [2020-09-04 20:29:11,315 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 423 transitions. Word has length 174 [2020-09-04 20:29:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:11,316 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 423 transitions. [2020-09-04 20:29:11,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 20:29:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 423 transitions. [2020-09-04 20:29:11,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-04 20:29:11,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:11,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:11,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 20:29:11,319 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:11,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:11,320 INFO L82 PathProgramCache]: Analyzing trace with hash 236159680, now seen corresponding path program 1 times [2020-09-04 20:29:11,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:11,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751246222] [2020-09-04 20:29:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,689 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:11,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 20:29:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 20:29:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-09-04 20:29:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 20:29:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:11,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751246222] [2020-09-04 20:29:11,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:11,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 20:29:11,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345539769] [2020-09-04 20:29:11,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 20:29:11,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:11,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 20:29:11,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 20:29:11,919 INFO L87 Difference]: Start difference. First operand 393 states and 423 transitions. Second operand 10 states. [2020-09-04 20:29:12,464 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:14,267 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:14,584 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:14,906 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:15,256 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:15,530 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:15,821 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:16,109 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:16,542 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:18,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:18,601 INFO L93 Difference]: Finished difference Result 1148 states and 1376 transitions. [2020-09-04 20:29:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 20:29:18,601 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 198 [2020-09-04 20:29:18,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:18,609 INFO L225 Difference]: With dead ends: 1148 [2020-09-04 20:29:18,609 INFO L226 Difference]: Without dead ends: 865 [2020-09-04 20:29:18,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 20:29:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2020-09-04 20:29:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 639. [2020-09-04 20:29:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-09-04 20:29:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 694 transitions. [2020-09-04 20:29:18,787 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 694 transitions. Word has length 198 [2020-09-04 20:29:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:18,788 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 694 transitions. [2020-09-04 20:29:18,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 20:29:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 694 transitions. [2020-09-04 20:29:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-04 20:29:18,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:18,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:18,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 20:29:18,792 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:18,792 INFO L82 PathProgramCache]: Analyzing trace with hash -704447827, now seen corresponding path program 1 times [2020-09-04 20:29:18,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:18,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223520699] [2020-09-04 20:29:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,202 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:19,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:29:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 20:29:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 20:29:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 20:29:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-09-04 20:29:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:19,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223520699] [2020-09-04 20:29:19,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:19,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 20:29:19,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430818665] [2020-09-04 20:29:19,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 20:29:19,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:19,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 20:29:19,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 20:29:19,414 INFO L87 Difference]: Start difference. First operand 639 states and 694 transitions. Second operand 11 states. [2020-09-04 20:29:19,923 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:21,661 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:21,947 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:22,248 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:22,571 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:22,892 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:23,260 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 20:29:23,564 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:23,909 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:25,512 INFO L93 Difference]: Finished difference Result 1000 states and 1228 transitions. [2020-09-04 20:29:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 20:29:25,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 203 [2020-09-04 20:29:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:25,520 INFO L225 Difference]: With dead ends: 1000 [2020-09-04 20:29:25,520 INFO L226 Difference]: Without dead ends: 997 [2020-09-04 20:29:25,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2020-09-04 20:29:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-09-04 20:29:25,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 639. [2020-09-04 20:29:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-09-04 20:29:25,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 693 transitions. [2020-09-04 20:29:25,699 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 693 transitions. Word has length 203 [2020-09-04 20:29:25,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:25,700 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 693 transitions. [2020-09-04 20:29:25,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 20:29:25,700 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 693 transitions. [2020-09-04 20:29:25,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 20:29:25,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:25,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:25,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 20:29:25,704 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:25,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1818229592, now seen corresponding path program 1 times [2020-09-04 20:29:25,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:25,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562521323] [2020-09-04 20:29:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:25,989 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:25,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:29:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 20:29:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 20:29:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 20:29:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 20:29:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:26,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562521323] [2020-09-04 20:29:26,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:26,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 20:29:26,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727316225] [2020-09-04 20:29:26,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 20:29:26,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:26,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 20:29:26,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 20:29:26,207 INFO L87 Difference]: Start difference. First operand 639 states and 693 transitions. Second operand 11 states. [2020-09-04 20:29:27,585 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:27,897 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 20:29:28,223 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 20:29:28,526 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:28,849 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:29,162 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:31,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:31,238 INFO L93 Difference]: Finished difference Result 1536 states and 1843 transitions. [2020-09-04 20:29:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 20:29:31,239 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 204 [2020-09-04 20:29:31,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:31,246 INFO L225 Difference]: With dead ends: 1536 [2020-09-04 20:29:31,246 INFO L226 Difference]: Without dead ends: 1007 [2020-09-04 20:29:31,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 20:29:31,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-09-04 20:29:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 655. [2020-09-04 20:29:31,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-09-04 20:29:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 709 transitions. [2020-09-04 20:29:31,543 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 709 transitions. Word has length 204 [2020-09-04 20:29:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:31,544 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 709 transitions. [2020-09-04 20:29:31,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 20:29:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 709 transitions. [2020-09-04 20:29:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 20:29:31,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:31,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:31,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 20:29:31,547 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:31,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:31,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1404598200, now seen corresponding path program 1 times [2020-09-04 20:29:31,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:31,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901120739] [2020-09-04 20:29:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:31,927 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:31,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:29:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 20:29:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 20:29:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 20:29:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 20:29:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:32,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901120739] [2020-09-04 20:29:32,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:32,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 20:29:32,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139926959] [2020-09-04 20:29:32,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 20:29:32,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:32,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 20:29:32,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 20:29:32,171 INFO L87 Difference]: Start difference. First operand 655 states and 709 transitions. Second operand 14 states. [2020-09-04 20:29:32,801 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 20:29:33,111 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 20:29:33,423 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:33,729 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:34,021 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:35,040 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:35,344 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:35,670 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:35,993 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 20:29:36,290 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 20:29:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:38,422 INFO L93 Difference]: Finished difference Result 1574 states and 1908 transitions. [2020-09-04 20:29:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 20:29:38,426 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2020-09-04 20:29:38,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:38,434 INFO L225 Difference]: With dead ends: 1574 [2020-09-04 20:29:38,434 INFO L226 Difference]: Without dead ends: 1029 [2020-09-04 20:29:38,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 20:29:38,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2020-09-04 20:29:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 667. [2020-09-04 20:29:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-09-04 20:29:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 721 transitions. [2020-09-04 20:29:38,715 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 721 transitions. Word has length 204 [2020-09-04 20:29:38,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:38,716 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 721 transitions. [2020-09-04 20:29:38,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 20:29:38,716 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 721 transitions. [2020-09-04 20:29:38,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-04 20:29:38,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:38,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:38,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 20:29:38,721 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:38,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:38,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1474116309, now seen corresponding path program 1 times [2020-09-04 20:29:38,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:38,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694207687] [2020-09-04 20:29:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,085 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 20:29:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 20:29:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 20:29:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 20:29:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 20:29:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 20:29:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 20:29:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 20:29:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 20:29:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 20:29:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 20:29:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 20:29:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-09-04 20:29:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 20:29:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 20:29:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 20:29:39,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694207687] [2020-09-04 20:29:39,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 20:29:39,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 20:29:39,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409408716] [2020-09-04 20:29:39,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 20:29:39,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 20:29:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 20:29:39,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 20:29:39,323 INFO L87 Difference]: Start difference. First operand 667 states and 721 transitions. Second operand 8 states. [2020-09-04 20:29:39,908 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:40,536 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 20:29:44,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 20:29:44,521 INFO L93 Difference]: Finished difference Result 2263 states and 2829 transitions. [2020-09-04 20:29:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 20:29:44,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 204 [2020-09-04 20:29:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 20:29:44,537 INFO L225 Difference]: With dead ends: 2263 [2020-09-04 20:29:44,537 INFO L226 Difference]: Without dead ends: 1706 [2020-09-04 20:29:44,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-04 20:29:44,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-09-04 20:29:45,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1129. [2020-09-04 20:29:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-09-04 20:29:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1261 transitions. [2020-09-04 20:29:45,051 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1261 transitions. Word has length 204 [2020-09-04 20:29:45,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 20:29:45,052 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1261 transitions. [2020-09-04 20:29:45,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 20:29:45,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1261 transitions. [2020-09-04 20:29:45,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-04 20:29:45,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 20:29:45,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 20:29:45,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 20:29:45,055 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 20:29:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 20:29:45,056 INFO L82 PathProgramCache]: Analyzing trace with hash -534461845, now seen corresponding path program 1 times [2020-09-04 20:29:45,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 20:29:45,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310282228] [2020-09-04 20:29:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 20:29:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 20:29:45,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 20:29:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 20:29:45,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 20:29:45,401 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 20:29:45,402 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 20:29:45,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 20:29:45,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 08:29:45 BoogieIcfgContainer [2020-09-04 20:29:45,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 20:29:45,635 INFO L168 Benchmark]: Toolchain (without parser) took 50986.82 ms. Allocated memory was 145.2 MB in the beginning and 868.2 MB in the end (delta: 723.0 MB). Free memory was 101.0 MB in the beginning and 506.5 MB in the end (delta: -405.5 MB). Peak memory consumption was 317.4 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:45,636 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 20:29:45,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.99 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.5 MB in the beginning and 169.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:45,637 INFO L168 Benchmark]: Boogie Preprocessor took 111.43 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 165.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:45,638 INFO L168 Benchmark]: RCFGBuilder took 1369.73 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 165.7 MB in the beginning and 171.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:45,639 INFO L168 Benchmark]: TraceAbstraction took 48700.56 ms. Allocated memory was 234.4 MB in the beginning and 868.2 MB in the end (delta: 633.9 MB). Free memory was 171.7 MB in the beginning and 506.5 MB in the end (delta: -334.8 MB). Peak memory consumption was 299.0 MB. Max. memory is 7.1 GB. [2020-09-04 20:29:45,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 796.99 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 100.5 MB in the beginning and 169.7 MB in the end (delta: -69.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.43 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 165.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1369.73 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 165.7 MB in the beginning and 171.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48700.56 ms. Allocated memory was 234.4 MB in the beginning and 868.2 MB in the end (delta: 633.9 MB). Free memory was 171.7 MB in the beginning and 506.5 MB in the end (delta: -334.8 MB). Peak memory consumption was 299.0 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; VAL [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=164, \old(methaneLevelCritical)=149, \old(pumpRunning)=139, \old(systemActive)=138, \old(waterLevel)=147, cleanupTimeShifts=4, head={176:164}, methaneLevelCritical=149, pumpRunning=139, systemActive=138, waterLevel=147] [L229] int pumpRunning = 0; VAL [\old(cleanupTimeShifts)=171, \old(head)=164, \old(head)=176, \old(methaneLevelCritical)=149, \old(pumpRunning)=139, \old(systemActive)=138, \old(waterLevel)=147, cleanupTimeShifts=4, head={176:164}, methaneLevelCritical=149, pumpRunning=0, systemActive=138, waterLevel=147] [L230] int systemActive = 1; VAL [\old(cleanupTimeShifts)=171, \old(head)=164, \old(head)=176, \old(methaneLevelCritical)=149, \old(pumpRunning)=139, \old(systemActive)=138, \old(waterLevel)=147, cleanupTimeShifts=4, head={176:164}, methaneLevelCritical=149, pumpRunning=0, systemActive=1, waterLevel=147] [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=164, \old(methaneLevelCritical)=149, \old(pumpRunning)=139, \old(systemActive)=138, \old(waterLevel)=147, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=149, pumpRunning=0, systemActive=1, waterLevel=147] [L889] int waterLevel = 1; VAL [\old(cleanupTimeShifts)=171, \old(head)=164, \old(head)=176, \old(methaneLevelCritical)=149, \old(pumpRunning)=139, \old(systemActive)=138, \old(waterLevel)=147, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=149, pumpRunning=0, systemActive=1, waterLevel=1] [L890] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=171, \old(head)=176, \old(head)=164, \old(methaneLevelCritical)=149, \old(pumpRunning)=139, \old(systemActive)=138, \old(waterLevel)=147, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; 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] [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 ; 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] [L490] retValue_acc = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=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() 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, valid_product()=1, waterLevel=1] [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 ; 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] [L147] 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] [L148] int tmp___0 ; 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] [L149] int tmp___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=1] [L150] int tmp___2 ; 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] [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() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [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 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] [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() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [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)) 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] [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() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, __VERIFIER_nondet_int()=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=1, waterLevel=2] [L185] COND TRUE \read(tmp___2) 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___2=1, waterLevel=2] [L187] CALL startSystem() 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] [L456] systemActive = 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] [L187] RET startSystem() 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___2=1, 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 ; 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] [L416] 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] [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) 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] [L976] retValue_acc = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [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() 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, tmp=0, waterLevel=2] [L423] COND FALSE !(\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=0, waterLevel=2] [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 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [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() 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, tmp=1, waterLevel=2] [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 ; 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] [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 ; 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] [L931] retValue_acc = methaneLevelCritical VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [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() 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, tmp=1, waterLevel=2] [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 ; 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] [L373] retValue_acc = pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [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() 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, tmp___0=1, waterLevel=2] [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, 653 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 40.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2437 SDtfs, 6421 SDslu, 4492 SDs, 0 SdLazy, 9910 SolverSat, 2105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 274 SyntacticMatches, 4 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1129occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 2142 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1837 NumberOfCodeBlocks, 1837 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1619 ConstructedInterpolants, 0 QuantifiedInterpolants, 721544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...