/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:33:45,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:33:45,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:33:45,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:33:45,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:33:45,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:33:45,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:33:45,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:33:45,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:33:45,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:33:45,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:33:45,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:33:45,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:33:45,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:33:45,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:33:45,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:33:45,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:33:45,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:33:45,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:33:45,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:33:45,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:33:45,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:33:45,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:33:45,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:33:45,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:33:45,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:33:45,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:33:45,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:33:45,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:33:45,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-27 21:33:45,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:33:45,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:33:45,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:33:45,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:33:45,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:33:45,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:33:45,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:33:45,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:33:45,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:33:45,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:33:45,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:33:45,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:33:45,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:33:45,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:33:45,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:33:45,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:33:45,211 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:33:45,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:33:45,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:33:45,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:33:45,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:33:45,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:33:45,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:33:45,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:33:45,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:33:45,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:33:45,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:33:45,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:33:45,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:33:45,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:33:45,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:33:45,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:33:45,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:33:45,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:33:45,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:33:45,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:33:45,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:33:45,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:33:45,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:33:45,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:33:45,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:33:45,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:33:45,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:33:45,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:33:45,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:33:45,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:33:45,712 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:33:45,713 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-08-27 21:33:45,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2df144773/799e234728534953b57d514802e48074/FLAG1b2ec0568 [2020-08-27 21:33:46,500 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:33:46,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-08-27 21:33:46,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2df144773/799e234728534953b57d514802e48074/FLAG1b2ec0568 [2020-08-27 21:33:46,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2df144773/799e234728534953b57d514802e48074 [2020-08-27 21:33:46,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:33:46,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:33:46,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:33:46,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:33:46,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:33:46,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddad570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:46, skipping insertion in model container [2020-08-27 21:33:46,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:33:46" (1/1) ... [2020-08-27 21:33:46,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:33:46,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:33:47,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:33:47,318 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:33:47,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:33:47,455 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:33:47,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47 WrapperNode [2020-08-27 21:33:47,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:33:47,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:33:47,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:33:47,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:33:47,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (1/1) ... [2020-08-27 21:33:47,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (1/1) ... [2020-08-27 21:33:47,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (1/1) ... [2020-08-27 21:33:47,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (1/1) ... [2020-08-27 21:33:47,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (1/1) ... [2020-08-27 21:33:47,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (1/1) ... [2020-08-27 21:33:47,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (1/1) ... [2020-08-27 21:33:47,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:33:47,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:33:47,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:33:47,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:33:47,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (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 [2020-08-27 21:33:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:33:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:33:47,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-27 21:33:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-27 21:33:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-27 21:33:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-27 21:33:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-27 21:33:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-27 21:33:47,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-27 21:33:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-27 21:33:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-27 21:33:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-27 21:33:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-27 21:33:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:33:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-27 21:33:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-27 21:33:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-27 21:33:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-27 21:33:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-27 21:33:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-27 21:33:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-27 21:33:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-27 21:33:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-27 21:33:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-27 21:33:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-27 21:33:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-27 21:33:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-27 21:33:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-27 21:33:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-27 21:33:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-27 21:33:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:33:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-27 21:33:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-27 21:33:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-27 21:33:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-27 21:33:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-27 21:33:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-27 21:33:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-27 21:33:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-27 21:33:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-27 21:33:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-27 21:33:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-27 21:33:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:33:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:33:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-27 21:33:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-27 21:33:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-27 21:33:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-27 21:33:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-27 21:33:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-27 21:33:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-27 21:33:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-27 21:33:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-27 21:33:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:33:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-27 21:33:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-27 21:33:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-27 21:33:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-27 21:33:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-27 21:33:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-27 21:33:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-27 21:33:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-27 21:33:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-27 21:33:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-27 21:33:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-27 21:33:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-27 21:33:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-27 21:33:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-27 21:33:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-27 21:33:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-27 21:33:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-27 21:33:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-27 21:33:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-27 21:33:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-27 21:33:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-27 21:33:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-27 21:33:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-27 21:33:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:33:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-27 21:33:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-27 21:33:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-27 21:33:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-27 21:33:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-27 21:33:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-27 21:33:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:33:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-27 21:33:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-27 21:33:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:33:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-27 21:33:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-27 21:33:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:33:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-27 21:33:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-27 21:33:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-27 21:33:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-27 21:33:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:33:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-27 21:33:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:33:50,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:33:50,815 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-27 21:33:50,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:33:50 BoogieIcfgContainer [2020-08-27 21:33:50,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:33:50,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:33:50,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:33:50,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:33:50,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:33:46" (1/3) ... [2020-08-27 21:33:50,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5073c785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:33:50, skipping insertion in model container [2020-08-27 21:33:50,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:33:47" (2/3) ... [2020-08-27 21:33:50,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5073c785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:33:50, skipping insertion in model container [2020-08-27 21:33:50,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:33:50" (3/3) ... [2020-08-27 21:33:50,831 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-08-27 21:33:50,842 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:33:50,853 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:33:50,871 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:33:50,897 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:33:50,897 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:33:50,897 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:33:50,897 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:33:50,898 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:33:50,898 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:33:50,898 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:33:50,898 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:33:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-08-27 21:33:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-27 21:33:50,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:33:50,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:33:50,940 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:33:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:33:50,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1875422794, now seen corresponding path program 1 times [2020-08-27 21:33:50,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:33:50,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511318968] [2020-08-27 21:33:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:33:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,694 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:33:51,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:33:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:33:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:33:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:33:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:33:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-27 21:33:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:33:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:33:51,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511318968] [2020-08-27 21:33:51,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:33:51,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:33:51,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407025366] [2020-08-27 21:33:51,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:33:51,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:33:51,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:33:51,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:33:51,857 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2020-08-27 21:33:53,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:33:53,184 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-08-27 21:33:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:33:53,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-27 21:33:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:33:53,206 INFO L225 Difference]: With dead ends: 320 [2020-08-27 21:33:53,206 INFO L226 Difference]: Without dead ends: 173 [2020-08-27 21:33:53,212 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 [2020-08-27 21:33:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-27 21:33:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-08-27 21:33:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-27 21:33:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-27 21:33:53,320 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-08-27 21:33:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:33:53,321 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-27 21:33:53,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:33:53,321 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-27 21:33:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-27 21:33:53,325 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:33:53,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:33:53,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:33:53,326 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:33:53,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:33:53,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2108875382, now seen corresponding path program 1 times [2020-08-27 21:33:53,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:33:53,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892121024] [2020-08-27 21:33:53,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:33:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,680 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:33:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:33:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:33:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:33:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:33:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:33:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:33:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-27 21:33:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:33:53,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892121024] [2020-08-27 21:33:53,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:33:53,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:33:53,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434435669] [2020-08-27 21:33:53,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:33:53,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:33:53,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:33:53,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:33:53,741 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-08-27 21:33:54,247 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:33:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:33:55,293 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-08-27 21:33:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:33:55,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-27 21:33:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:33:55,298 INFO L225 Difference]: With dead ends: 243 [2020-08-27 21:33:55,298 INFO L226 Difference]: Without dead ends: 157 [2020-08-27 21:33:55,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:33:55,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-27 21:33:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-08-27 21:33:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-27 21:33:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-27 21:33:55,339 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-08-27 21:33:55,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:33:55,339 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-27 21:33:55,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:33:55,339 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-27 21:33:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-27 21:33:55,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:33:55,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:33:55,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:33:55,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:33:55,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:33:55,343 INFO L82 PathProgramCache]: Analyzing trace with hash -2135499519, now seen corresponding path program 1 times [2020-08-27 21:33:55,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:33:55,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380133471] [2020-08-27 21:33:55,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:33:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:55,808 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:33:55,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:33:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:33:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:33:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:55,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:33:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:55,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:33:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:55,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-27 21:33:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:55,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-27 21:33:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:33:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:33:55,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380133471] [2020-08-27 21:33:55,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:33:55,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:33:55,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035885138] [2020-08-27 21:33:55,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:33:55,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:33:55,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:33:55,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:33:55,963 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 8 states. [2020-08-27 21:33:56,491 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:33:56,887 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:33:57,235 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:33:57,522 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:33:58,390 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:00,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:00,629 INFO L93 Difference]: Finished difference Result 442 states and 547 transitions. [2020-08-27 21:34:00,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:34:00,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-27 21:34:00,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:00,642 INFO L225 Difference]: With dead ends: 442 [2020-08-27 21:34:00,643 INFO L226 Difference]: Without dead ends: 337 [2020-08-27 21:34:00,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:34:00,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-27 21:34:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-08-27 21:34:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-27 21:34:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-08-27 21:34:00,721 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2020-08-27 21:34:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:00,721 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-08-27 21:34:00,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:34:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2020-08-27 21:34:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-27 21:34:00,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:00,725 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] [2020-08-27 21:34:00,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:34:00,725 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:00,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1973278076, now seen corresponding path program 1 times [2020-08-27 21:34:00,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:00,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864425255] [2020-08-27 21:34:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,134 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:01,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-27 21:34:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-27 21:34:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-27 21:34:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:01,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864425255] [2020-08-27 21:34:01,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:01,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:34:01,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602498404] [2020-08-27 21:34:01,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:34:01,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:01,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:34:01,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:34:01,254 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 8 states. [2020-08-27 21:34:01,770 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:02,972 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:03,373 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:03,705 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:04,075 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:04,624 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:05,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:05,801 INFO L93 Difference]: Finished difference Result 877 states and 1135 transitions. [2020-08-27 21:34:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:34:05,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-27 21:34:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:05,809 INFO L225 Difference]: With dead ends: 877 [2020-08-27 21:34:05,809 INFO L226 Difference]: Without dead ends: 629 [2020-08-27 21:34:05,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:34:05,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-27 21:34:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 499. [2020-08-27 21:34:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-08-27 21:34:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 606 transitions. [2020-08-27 21:34:05,966 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 606 transitions. Word has length 57 [2020-08-27 21:34:05,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:05,967 INFO L479 AbstractCegarLoop]: Abstraction has 499 states and 606 transitions. [2020-08-27 21:34:05,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:34:05,967 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 606 transitions. [2020-08-27 21:34:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-27 21:34:05,971 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:05,971 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] [2020-08-27 21:34:05,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:34:05,972 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:05,972 INFO L82 PathProgramCache]: Analyzing trace with hash -820899264, now seen corresponding path program 1 times [2020-08-27 21:34:05,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:05,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046252265] [2020-08-27 21:34:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,346 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:06,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:34:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:34:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:34:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-27 21:34:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:06,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046252265] [2020-08-27 21:34:06,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:06,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:34:06,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103480822] [2020-08-27 21:34:06,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:34:06,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:06,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:34:06,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:34:06,480 INFO L87 Difference]: Start difference. First operand 499 states and 606 transitions. Second operand 9 states. [2020-08-27 21:34:06,970 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:08,127 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:08,480 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:08,790 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-27 21:34:09,487 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:09,900 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:11,062 INFO L93 Difference]: Finished difference Result 1401 states and 1876 transitions. [2020-08-27 21:34:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:34:11,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-27 21:34:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:11,071 INFO L225 Difference]: With dead ends: 1401 [2020-08-27 21:34:11,071 INFO L226 Difference]: Without dead ends: 926 [2020-08-27 21:34:11,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:34:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-08-27 21:34:11,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 739. [2020-08-27 21:34:11,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-08-27 21:34:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 907 transitions. [2020-08-27 21:34:11,248 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 907 transitions. Word has length 61 [2020-08-27 21:34:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:11,248 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 907 transitions. [2020-08-27 21:34:11,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:34:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 907 transitions. [2020-08-27 21:34:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-27 21:34:11,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:11,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:34:11,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:34:11,252 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:11,252 INFO L82 PathProgramCache]: Analyzing trace with hash 16386475, now seen corresponding path program 1 times [2020-08-27 21:34:11,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:11,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72164153] [2020-08-27 21:34:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,539 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:11,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:34:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:34:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:34:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:34:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:34:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:34:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:11,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72164153] [2020-08-27 21:34:11,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:11,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-27 21:34:11,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853611838] [2020-08-27 21:34:11,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:34:11,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:34:11,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:34:11,675 INFO L87 Difference]: Start difference. First operand 739 states and 907 transitions. Second operand 9 states. [2020-08-27 21:34:12,912 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:13,215 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-27 21:34:13,573 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:13,874 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:15,022 INFO L93 Difference]: Finished difference Result 1717 states and 2277 transitions. [2020-08-27 21:34:15,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-27 21:34:15,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-27 21:34:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:15,038 INFO L225 Difference]: With dead ends: 1717 [2020-08-27 21:34:15,039 INFO L226 Difference]: Without dead ends: 1002 [2020-08-27 21:34:15,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:34:15,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-08-27 21:34:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 765. [2020-08-27 21:34:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-08-27 21:34:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 935 transitions. [2020-08-27 21:34:15,206 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 935 transitions. Word has length 84 [2020-08-27 21:34:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:15,207 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 935 transitions. [2020-08-27 21:34:15,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:34:15,207 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 935 transitions. [2020-08-27 21:34:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-27 21:34:15,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:15,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:34:15,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:34:15,210 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:15,211 INFO L82 PathProgramCache]: Analyzing trace with hash 39018729, now seen corresponding path program 1 times [2020-08-27 21:34:15,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:15,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173420249] [2020-08-27 21:34:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,516 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:34:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:34:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:34:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:34:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:34:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:34:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:15,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173420249] [2020-08-27 21:34:15,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:15,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-27 21:34:15,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81039314] [2020-08-27 21:34:15,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:34:15,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:15,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:34:15,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:34:15,659 INFO L87 Difference]: Start difference. First operand 765 states and 935 transitions. Second operand 11 states. [2020-08-27 21:34:16,332 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:16,625 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:16,907 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:17,807 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:18,128 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:18,445 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-27 21:34:19,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:19,872 INFO L93 Difference]: Finished difference Result 1771 states and 2388 transitions. [2020-08-27 21:34:19,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:34:19,873 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-27 21:34:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:19,881 INFO L225 Difference]: With dead ends: 1771 [2020-08-27 21:34:19,881 INFO L226 Difference]: Without dead ends: 1030 [2020-08-27 21:34:19,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:34:19,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-08-27 21:34:20,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 781. [2020-08-27 21:34:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 781 states. [2020-08-27 21:34:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 951 transitions. [2020-08-27 21:34:20,038 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 951 transitions. Word has length 84 [2020-08-27 21:34:20,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:20,039 INFO L479 AbstractCegarLoop]: Abstraction has 781 states and 951 transitions. [2020-08-27 21:34:20,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:34:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 951 transitions. [2020-08-27 21:34:20,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-27 21:34:20,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:20,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:34:20,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:34:20,044 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:20,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:20,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1064510728, now seen corresponding path program 1 times [2020-08-27 21:34:20,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:20,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293950687] [2020-08-27 21:34:20,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,395 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-27 21:34:20,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:34:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-27 21:34:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-27 21:34:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-27 21:34:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-27 21:34:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:34:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:34:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-27 21:34:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-27 21:34:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-27 21:34:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-27 21:34:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-27 21:34:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:34:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:34:20,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293950687] [2020-08-27 21:34:20,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:34:20,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-27 21:34:20,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690357753] [2020-08-27 21:34:20,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:34:20,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:34:20,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:34:20,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:34:20,552 INFO L87 Difference]: Start difference. First operand 781 states and 951 transitions. Second operand 7 states. [2020-08-27 21:34:21,040 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:21,650 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-27 21:34:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:34:24,554 INFO L93 Difference]: Finished difference Result 2699 states and 3665 transitions. [2020-08-27 21:34:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:34:24,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-27 21:34:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:34:24,567 INFO L225 Difference]: With dead ends: 2699 [2020-08-27 21:34:24,567 INFO L226 Difference]: Without dead ends: 1942 [2020-08-27 21:34:24,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:34:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2020-08-27 21:34:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1619. [2020-08-27 21:34:24,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1619 states. [2020-08-27 21:34:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 1989 transitions. [2020-08-27 21:34:24,945 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 1989 transitions. Word has length 84 [2020-08-27 21:34:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:34:24,946 INFO L479 AbstractCegarLoop]: Abstraction has 1619 states and 1989 transitions. [2020-08-27 21:34:24,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:34:24,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 1989 transitions. [2020-08-27 21:34:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-27 21:34:24,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:34:24,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:34:24,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:34:24,953 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:34:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:34:24,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1546821858, now seen corresponding path program 1 times [2020-08-27 21:34:24,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:34:24,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251031156] [2020-08-27 21:34:24,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:34:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:34:25,045 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:34:25,045 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:34:25,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:34:25,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:34:25 BoogieIcfgContainer [2020-08-27 21:34:25,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:34:25,096 INFO L168 Benchmark]: Toolchain (without parser) took 38382.28 ms. Allocated memory was 139.5 MB in the beginning and 632.8 MB in the end (delta: 493.4 MB). Free memory was 100.4 MB in the beginning and 266.9 MB in the end (delta: -166.5 MB). Peak memory consumption was 326.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:25,098 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:34:25,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.85 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 170.1 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:25,110 INFO L168 Benchmark]: Boogie Preprocessor took 95.80 ms. Allocated memory is still 202.9 MB. Free memory was 170.1 MB in the beginning and 166.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:25,110 INFO L168 Benchmark]: RCFGBuilder took 3269.08 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.0 MB in the beginning and 194.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:25,114 INFO L168 Benchmark]: TraceAbstraction took 34270.96 ms. Allocated memory was 235.4 MB in the beginning and 632.8 MB in the end (delta: 397.4 MB). Free memory was 194.6 MB in the beginning and 266.9 MB in the end (delta: -72.2 MB). Peak memory consumption was 325.2 MB. Max. memory is 7.1 GB. [2020-08-27 21:34:25,122 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.85 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 170.1 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.80 ms. Allocated memory is still 202.9 MB. Free memory was 170.1 MB in the beginning and 166.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3269.08 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 166.0 MB in the beginning and 194.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34270.96 ms. Allocated memory was 235.4 MB in the beginning and 632.8 MB in the end (delta: 397.4 MB). Free memory was 194.6 MB in the beginning and 266.9 MB in the end (delta: -72.2 MB). Peak memory consumption was 325.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 383]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L458] int cleanupTimeShifts = 4; [L752] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L534] int retValue_acc ; [L535] int tmp ; [L539] FCALL select_helpers() [L540] FCALL select_features() [L541] CALL, EXPR valid_product() [L975] int retValue_acc ; [L978] retValue_acc = 1 [L979] return (retValue_acc); [L541] RET, EXPR valid_product() [L541] tmp = valid_product() [L543] COND TRUE \read(tmp) [L545] FCALL setup() [L546] CALL runTest() [L525] CALL test() [L390] int splverifierCounter ; [L391] int tmp ; [L392] int tmp___0 ; [L393] int tmp___1 ; [L394] int tmp___2 ; [L397] splverifierCounter = 0 [L399] COND TRUE 1 [L401] COND TRUE splverifierCounter < 4 [L407] tmp = __VERIFIER_nondet_int() [L409] COND TRUE \read(tmp) [L411] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L411] RET waterRise() [L417] tmp___0 = __VERIFIER_nondet_int() [L419] COND TRUE \read(tmp___0) [L421] CALL changeMethaneLevel() [L78] COND FALSE !(\read(methaneLevelCritical)) [L81] methaneLevelCritical = 1 [L421] RET changeMethaneLevel() [L427] tmp___2 = __VERIFIER_nondet_int() [L429] COND FALSE !(\read(tmp___2)) [L435] tmp___1 = __VERIFIER_nondet_int() [L437] COND FALSE !(\read(tmp___1)) [L446] CALL timeShift() [L166] COND FALSE !(\read(pumpRunning)) [L173] COND TRUE \read(systemActive) [L175] CALL processEnvironment() [L221] int tmp ; [L224] COND FALSE !(\read(pumpRunning)) [L239] CALL processEnvironment__wrappee__highWaterSensor() [L195] int tmp ; [L198] COND TRUE ! pumpRunning [L200] CALL, EXPR isHighWaterLevel() [L318] int retValue_acc ; [L319] int tmp ; [L320] int tmp___0 ; [L324] CALL, EXPR isHighWaterSensorDry() [L128] int retValue_acc ; [L131] COND FALSE !(waterLevel < 2) [L135] retValue_acc = 0 [L136] return (retValue_acc); [L324] RET, EXPR isHighWaterSensorDry() [L324] tmp = isHighWaterSensorDry() [L326] COND FALSE !(\read(tmp)) [L329] tmp___0 = 1 [L331] retValue_acc = tmp___0 [L332] return (retValue_acc); [L200] RET, EXPR isHighWaterLevel() [L200] tmp = isHighWaterLevel() [L202] COND TRUE \read(tmp) [L204] CALL activatePump() [L249] pumpRunning = 1 [L204] RET activatePump() [L239] RET processEnvironment__wrappee__highWaterSensor() [L175] RET processEnvironment() [L181] CALL __utac_acc__Specification1_spec__1() [L558] int tmp ; [L559] int tmp___0 ; [L563] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L563] RET, EXPR isMethaneLevelCritical() [L563] tmp = isMethaneLevelCritical() [L565] COND TRUE \read(tmp) [L567] CALL, EXPR isPumpRunning() [L273] int retValue_acc ; [L276] retValue_acc = pumpRunning [L277] return (retValue_acc); [L567] RET, EXPR isPumpRunning() [L567] tmp___0 = isPumpRunning() [L569] COND TRUE \read(tmp___0) [L571] CALL __automaton_fail() [L383] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 28.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1021 SDtfs, 1814 SDslu, 1112 SDs, 0 SdLazy, 5439 SolverSat, 1166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1619occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1254 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 150948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...