/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:54:31,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:54:31,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:54:32,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:54:32,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:54:32,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:54:32,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:54:32,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:54:32,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:54:32,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:54:32,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:54:32,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:54:32,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:54:32,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:54:32,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:54:32,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:54:32,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:54:32,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:54:32,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:54:32,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:54:32,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:54:32,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:54:32,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:54:32,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:54:32,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:54:32,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:54:32,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:54:32,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:54:32,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:54:32,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:54:32,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:54:32,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:54:32,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:54:32,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:54:32,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:54:32,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:54:32,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:54:32,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:54:32,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:54:32,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:54:32,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:54:32,063 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 [2020-08-18 16:54:32,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:54:32,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:54:32,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:54:32,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:54:32,117 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:54:32,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:54:32,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:54:32,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:54:32,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:54:32,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:54:32,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:54:32,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:54:32,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:54:32,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:54:32,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:54:32,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:54:32,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:54:32,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:54:32,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:54:32,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:54:32,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:54:32,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:54:32,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:54:32,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:54:32,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:54:32,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:54:32,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:54:32,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:54:32,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:54:32,123 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 16:54:32,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:54:32,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:54:32,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:54:32,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:54:32,476 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:54:32,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2020-08-18 16:54:32,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26025e04e/ea61c3c89eea48fdbb3df30d070bd2f8/FLAG500a23ebf [2020-08-18 16:54:33,153 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:54:33,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product12.cil.c [2020-08-18 16:54:33,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26025e04e/ea61c3c89eea48fdbb3df30d070bd2f8/FLAG500a23ebf [2020-08-18 16:54:33,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26025e04e/ea61c3c89eea48fdbb3df30d070bd2f8 [2020-08-18 16:54:33,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:54:33,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:54:33,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:54:33,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:54:33,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:54:33,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:54:33" (1/1) ... [2020-08-18 16:54:33,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac4b67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:33, skipping insertion in model container [2020-08-18 16:54:33,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:54:33" (1/1) ... [2020-08-18 16:54:33,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:54:33,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:54:33,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:54:33,878 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:54:34,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:54:34,050 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:54:34,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34 WrapperNode [2020-08-18 16:54:34,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:54:34,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:54:34,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:54:34,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:54:34,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (1/1) ... [2020-08-18 16:54:34,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (1/1) ... [2020-08-18 16:54:34,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (1/1) ... [2020-08-18 16:54:34,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (1/1) ... [2020-08-18 16:54:34,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (1/1) ... [2020-08-18 16:54:34,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (1/1) ... [2020-08-18 16:54:34,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (1/1) ... [2020-08-18 16:54:34,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:54:34,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:54:34,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:54:34,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:54:34,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (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 [2020-08-18 16:54:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:54:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:54:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:54:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:54:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:54:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:54:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:54:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-18 16:54:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:54:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:54:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:54:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:54:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:54:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 16:54:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 16:54:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:54:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:54:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:54:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:54:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:54:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:54:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:54:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:54:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:54:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:54:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:54:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:54:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:54:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:54:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:54:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:54:34,219 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:54:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:54:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:54:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:54:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:54:34,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:54:34,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:54:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:54:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:54:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:54:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:54:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:54:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:54:34,221 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 16:54:34,223 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:54:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:54:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 16:54:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 16:54:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:54:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:54:34,224 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:54:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:54:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:54:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:54:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:54:34,225 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:54:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:54:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-18 16:54:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:54:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:54:34,226 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:54:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:54:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:54:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:54:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:54:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:54:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:54:34,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:54:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:54:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:54:34,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:54:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:54:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:54:34,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:54:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:54:34,230 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:54:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:54:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:54:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:54:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:54:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:54:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:54:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:54:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:54:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:54:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:54:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:54:35,176 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:54:35,176 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:54:35,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:54:35 BoogieIcfgContainer [2020-08-18 16:54:35,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:54:35,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:54:35,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:54:35,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:54:35,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:54:33" (1/3) ... [2020-08-18 16:54:35,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597945b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:54:35, skipping insertion in model container [2020-08-18 16:54:35,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:34" (2/3) ... [2020-08-18 16:54:35,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597945b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:54:35, skipping insertion in model container [2020-08-18 16:54:35,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:54:35" (3/3) ... [2020-08-18 16:54:35,191 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product12.cil.c [2020-08-18 16:54:35,202 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:54:35,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:54:35,224 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:54:35,250 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:54:35,250 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:54:35,250 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:54:35,251 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:54:35,251 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:54:35,251 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:54:35,251 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:54:35,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:54:35,274 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-08-18 16:54:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:54:35,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:35,286 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] [2020-08-18 16:54:35,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:35,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:35,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1715921214, now seen corresponding path program 1 times [2020-08-18 16:54:35,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:35,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067974207] [2020-08-18 16:54:35,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,937 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:54:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:54:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:54:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:36,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067974207] [2020-08-18 16:54:36,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:36,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:54:36,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19286788] [2020-08-18 16:54:36,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:54:36,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:36,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:54:36,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:54:36,047 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 3 states. [2020-08-18 16:54:37,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:37,084 INFO L93 Difference]: Finished difference Result 240 states and 317 transitions. [2020-08-18 16:54:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:54:37,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 16:54:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:37,103 INFO L225 Difference]: With dead ends: 240 [2020-08-18 16:54:37,103 INFO L226 Difference]: Without dead ends: 131 [2020-08-18 16:54:37,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:54:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-18 16:54:37,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 100. [2020-08-18 16:54:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 16:54:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 16:54:37,190 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 52 [2020-08-18 16:54:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:37,191 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 16:54:37,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:54:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 16:54:37,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 16:54:37,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:37,195 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] [2020-08-18 16:54:37,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:54:37,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:37,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1789709038, now seen corresponding path program 1 times [2020-08-18 16:54:37,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:37,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335576819] [2020-08-18 16:54:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,553 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:37,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:54:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:54:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:54:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:37,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335576819] [2020-08-18 16:54:37,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:37,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:54:37,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521003443] [2020-08-18 16:54:37,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:54:37,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:37,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:54:37,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:54:37,670 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 4 states. [2020-08-18 16:54:38,168 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:38,705 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2020-08-18 16:54:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 16:54:38,706 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 16:54:38,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:38,708 INFO L225 Difference]: With dead ends: 160 [2020-08-18 16:54:38,708 INFO L226 Difference]: Without dead ends: 115 [2020-08-18 16:54:38,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:54:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-18 16:54:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 91. [2020-08-18 16:54:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-18 16:54:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-18 16:54:38,744 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 53 [2020-08-18 16:54:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:38,744 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-18 16:54:38,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:54:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-18 16:54:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 16:54:38,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:38,747 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] [2020-08-18 16:54:38,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:54:38,747 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:38,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:38,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1277285199, now seen corresponding path program 1 times [2020-08-18 16:54:38,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:38,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331736029] [2020-08-18 16:54:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,090 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:39,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:54:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:54:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:54:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:39,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331736029] [2020-08-18 16:54:39,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:39,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:54:39,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008239911] [2020-08-18 16:54:39,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:54:39,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:39,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:54:39,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:54:39,171 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 8 states. [2020-08-18 16:54:39,574 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:39,875 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:40,112 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:40,380 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:41,107 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:42,309 INFO L93 Difference]: Finished difference Result 326 states and 401 transitions. [2020-08-18 16:54:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:54:42,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 16:54:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:42,314 INFO L225 Difference]: With dead ends: 326 [2020-08-18 16:54:42,314 INFO L226 Difference]: Without dead ends: 259 [2020-08-18 16:54:42,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:54:42,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-18 16:54:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 190. [2020-08-18 16:54:42,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 16:54:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2020-08-18 16:54:42,384 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 58 [2020-08-18 16:54:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:42,384 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2020-08-18 16:54:42,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:54:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2020-08-18 16:54:42,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 16:54:42,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:42,388 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] [2020-08-18 16:54:42,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:54:42,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:42,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2002784121, now seen corresponding path program 1 times [2020-08-18 16:54:42,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:42,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702051337] [2020-08-18 16:54:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,730 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:42,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:54:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:54:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:54:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 16:54:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:42,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702051337] [2020-08-18 16:54:42,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:42,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:54:42,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96067643] [2020-08-18 16:54:42,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:54:42,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:42,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:54:42,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:54:42,808 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand 7 states. [2020-08-18 16:54:43,143 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:44,210 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:44,490 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:44,739 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 16:54:45,011 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:45,315 INFO L93 Difference]: Finished difference Result 537 states and 682 transitions. [2020-08-18 16:54:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:54:45,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-18 16:54:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:45,320 INFO L225 Difference]: With dead ends: 537 [2020-08-18 16:54:45,320 INFO L226 Difference]: Without dead ends: 371 [2020-08-18 16:54:45,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:54:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-08-18 16:54:45,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 349. [2020-08-18 16:54:45,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-08-18 16:54:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 425 transitions. [2020-08-18 16:54:45,404 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 425 transitions. Word has length 61 [2020-08-18 16:54:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:45,405 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 425 transitions. [2020-08-18 16:54:45,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:54:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 425 transitions. [2020-08-18 16:54:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 16:54:45,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:45,408 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] [2020-08-18 16:54:45,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:54:45,409 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:45,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:45,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1296160083, now seen corresponding path program 1 times [2020-08-18 16:54:45,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:45,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167850897] [2020-08-18 16:54:45,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,713 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 16:54:45,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 16:54:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:54:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:54:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:54:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 16:54:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:54:45,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167850897] [2020-08-18 16:54:45,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:45,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:54:45,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706702729] [2020-08-18 16:54:45,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:54:45,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:45,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:54:45,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:54:45,852 INFO L87 Difference]: Start difference. First operand 349 states and 425 transitions. Second operand 5 states. [2020-08-18 16:54:46,132 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 16:54:46,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:46,685 INFO L93 Difference]: Finished difference Result 642 states and 802 transitions. [2020-08-18 16:54:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:54:46,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-08-18 16:54:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:46,694 INFO L225 Difference]: With dead ends: 642 [2020-08-18 16:54:46,694 INFO L226 Difference]: Without dead ends: 317 [2020-08-18 16:54:46,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:54:46,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-18 16:54:46,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 303. [2020-08-18 16:54:46,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-18 16:54:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 354 transitions. [2020-08-18 16:54:46,763 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 354 transitions. Word has length 65 [2020-08-18 16:54:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:46,764 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 354 transitions. [2020-08-18 16:54:46,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:54:46,764 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 354 transitions. [2020-08-18 16:54:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 16:54:46,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:46,766 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] [2020-08-18 16:54:46,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:54:46,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:46,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:46,767 INFO L82 PathProgramCache]: Analyzing trace with hash -423236225, now seen corresponding path program 1 times [2020-08-18 16:54:46,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:46,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181878301] [2020-08-18 16:54:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:54:46,839 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:54:46,840 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:54:46,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:54:46,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:54:46 BoogieIcfgContainer [2020-08-18 16:54:46,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:54:46,868 INFO L168 Benchmark]: Toolchain (without parser) took 13456.04 ms. Allocated memory was 140.5 MB in the beginning and 468.7 MB in the end (delta: 328.2 MB). Free memory was 102.0 MB in the beginning and 306.3 MB in the end (delta: -204.2 MB). Peak memory consumption was 124.0 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:46,869 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:54:46,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.61 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 169.9 MB in the end (delta: -68.1 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:46,871 INFO L168 Benchmark]: Boogie Preprocessor took 83.98 ms. Allocated memory is still 202.9 MB. Free memory was 169.9 MB in the beginning and 166.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:46,872 INFO L168 Benchmark]: RCFGBuilder took 1045.92 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.0 MB in the beginning and 197.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:46,873 INFO L168 Benchmark]: TraceAbstraction took 11683.41 ms. Allocated memory was 235.9 MB in the beginning and 468.7 MB in the end (delta: 232.8 MB). Free memory was 197.0 MB in the beginning and 306.3 MB in the end (delta: -109.2 MB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:54:46,876 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 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.61 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 101.8 MB in the beginning and 169.9 MB in the end (delta: -68.1 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.98 ms. Allocated memory is still 202.9 MB. Free memory was 169.9 MB in the beginning and 166.0 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1045.92 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 166.0 MB in the beginning and 197.0 MB in the end (delta: -31.1 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11683.41 ms. Allocated memory was 235.9 MB in the beginning and 468.7 MB in the end (delta: 232.8 MB). Free memory was 197.0 MB in the beginning and 306.3 MB in the end (delta: -109.2 MB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 890]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L306] int waterLevel = 1; [L307] int methaneLevelCritical = 0; [L593] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L790] int cleanupTimeShifts = 4; [L863] int retValue_acc ; [L864] int tmp ; [L868] FCALL select_helpers() [L869] FCALL select_features() [L870] CALL, EXPR valid_product() [L415] int retValue_acc ; [L418] retValue_acc = 1 [L419] return (retValue_acc); [L870] RET, EXPR valid_product() [L870] tmp = valid_product() [L872] COND TRUE \read(tmp) [L874] FCALL setup() [L875] CALL runTest() [L857] CALL test() [L85] int splverifierCounter ; [L86] int tmp ; [L87] int tmp___0 ; [L88] int tmp___1 ; [L89] int tmp___2 ; [L92] splverifierCounter = 0 [L94] COND TRUE 1 [L96] COND TRUE splverifierCounter < 4 [L102] tmp = __VERIFIER_nondet_int() [L104] COND TRUE \read(tmp) [L106] CALL waterRise() [L324] COND TRUE waterLevel < 2 [L325] waterLevel = waterLevel + 1 [L106] RET waterRise() [L112] tmp___0 = __VERIFIER_nondet_int() [L114] COND FALSE !(\read(tmp___0)) [L122] tmp___2 = __VERIFIER_nondet_int() [L124] COND FALSE !(\read(tmp___2)) [L130] tmp___1 = __VERIFIER_nondet_int() [L132] COND FALSE !(\read(tmp___1)) [L141] CALL timeShift() [L165] COND FALSE !(\read(pumpRunning)) [L172] COND TRUE \read(systemActive) [L174] FCALL processEnvironment() [L180] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L345] int retValue_acc ; [L348] retValue_acc = methaneLevelCritical [L349] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L377] int retValue_acc ; [L380] retValue_acc = waterLevel [L381] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L890] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 214 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 644 SDslu, 342 SDs, 0 SdLazy, 1355 SolverSat, 382 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 160 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...