/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:12:32,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:12:32,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:12:32,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:12:32,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:12:32,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:12:32,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:12:32,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:12:32,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:12:32,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:12:32,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:12:32,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:12:32,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:12:32,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:12:32,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:12:32,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:12:32,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:12:32,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:12:32,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:12:32,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:12:32,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:12:32,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:12:32,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:12:32,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:12:32,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:12:32,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:12:32,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:12:32,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:12:32,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:12:32,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:12:32,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:12:32,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:12:32,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:12:32,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:12:32,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:12:33,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:12:33,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:12:33,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:12:33,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:12:33,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:12:33,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:12:33,003 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 [2020-08-21 21:12:33,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:12:33,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:12:33,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:12:33,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:12:33,027 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:12:33,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:12:33,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:12:33,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:12:33,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:12:33,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:12:33,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:12:33,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:12:33,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:12:33,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:12:33,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:12:33,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:12:33,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:12:33,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:12:33,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:12:33,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:12:33,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:12:33,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:12:33,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:12:33,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:12:33,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:12:33,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:12:33,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:12:33,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:12:33,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:12:33,031 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=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:12:33,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:12:33,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:12:33,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:12:33,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:12:33,329 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:12:33,330 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-08-21 21:12:33,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60c4361ad/91e5ae9e511e42ef9c7798c37cbfefe2/FLAGe7d1346d0 [2020-08-21 21:12:33,920 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:12:33,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-08-21 21:12:33,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60c4361ad/91e5ae9e511e42ef9c7798c37cbfefe2/FLAGe7d1346d0 [2020-08-21 21:12:34,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60c4361ad/91e5ae9e511e42ef9c7798c37cbfefe2 [2020-08-21 21:12:34,259 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:12:34,261 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:12:34,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:12:34,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:12:34,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:12:34,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:34,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e4cf0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34, skipping insertion in model container [2020-08-21 21:12:34,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:34,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:12:34,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:12:34,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:12:34,829 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:12:34,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:12:34,959 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:12:34,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34 WrapperNode [2020-08-21 21:12:34,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:12:34,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:12:34,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:12:34,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:12:34,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:34,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:34,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:34,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:35,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:35,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:35,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (1/1) ... [2020-08-21 21:12:35,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:12:35,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:12:35,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:12:35,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:12:35,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (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 [2020-08-21 21:12:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:12:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:12:35,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:12:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:12:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:12:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:12:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:12:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:12:35,118 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:12:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 21:12:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 21:12:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:12:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:12:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 21:12:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:12:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:12:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:12:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:12:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:12:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:12:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:12:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 21:12:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 21:12:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 21:12:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:12:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:12:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:12:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:12:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:12:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:12:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:12:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:12:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:12:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:12:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:12:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:12:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:12:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:12:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:12:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:12:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:12:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:12:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:12:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:12:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:12:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:12:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:12:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:12:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:12:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:12:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 21:12:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 21:12:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:12:35,125 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 21:12:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:12:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:12:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:12:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:12:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:12:35,127 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:12:35,127 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:12:35,127 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:12:35,127 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:12:35,127 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 21:12:35,127 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 21:12:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 21:12:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 21:12:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:12:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:12:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:12:35,128 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:12:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:12:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:12:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:12:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:12:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:12:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:12:35,129 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:12:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:12:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:12:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:12:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:12:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:12:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:12:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:12:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:12:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:12:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:12:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:12:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:12:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:12:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:12:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:12:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:12:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:12:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:12:36,229 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:12:36,229 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:12:36,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:12:36 BoogieIcfgContainer [2020-08-21 21:12:36,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:12:36,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:12:36,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:12:36,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:12:36,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:12:34" (1/3) ... [2020-08-21 21:12:36,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2321ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:12:36, skipping insertion in model container [2020-08-21 21:12:36,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:12:34" (2/3) ... [2020-08-21 21:12:36,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2321ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:12:36, skipping insertion in model container [2020-08-21 21:12:36,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:12:36" (3/3) ... [2020-08-21 21:12:36,247 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2020-08-21 21:12:36,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:12:36,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:12:36,282 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:12:36,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:12:36,314 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:12:36,314 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:12:36,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:12:36,315 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:12:36,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:12:36,316 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:12:36,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:12:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-21 21:12:36,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:12:36,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:36,366 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] [2020-08-21 21:12:36,368 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:36,375 INFO L82 PathProgramCache]: Analyzing trace with hash 640895003, now seen corresponding path program 1 times [2020-08-21 21:12:36,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:36,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464742711] [2020-08-21 21:12:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,096 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:37,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:12:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:12:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:12:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:37,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464742711] [2020-08-21 21:12:37,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:37,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:12:37,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65818387] [2020-08-21 21:12:37,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:12:37,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:37,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:12:37,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:12:37,267 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-21 21:12:38,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:38,554 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-21 21:12:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:12:38,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 21:12:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:38,587 INFO L225 Difference]: With dead ends: 323 [2020-08-21 21:12:38,588 INFO L226 Difference]: Without dead ends: 174 [2020-08-21 21:12:38,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:12:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-21 21:12:38,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-21 21:12:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-21 21:12:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-21 21:12:38,759 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 52 [2020-08-21 21:12:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:38,760 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-21 21:12:38,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:12:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-21 21:12:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 21:12:38,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:38,772 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] [2020-08-21 21:12:38,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:12:38,772 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:38,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:38,773 INFO L82 PathProgramCache]: Analyzing trace with hash -61253498, now seen corresponding path program 1 times [2020-08-21 21:12:38,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:38,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785486331] [2020-08-21 21:12:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,166 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:39,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:12:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:12:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:39,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785486331] [2020-08-21 21:12:39,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:39,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:12:39,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398079173] [2020-08-21 21:12:39,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:12:39,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:39,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:12:39,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:12:39,215 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 4 states. [2020-08-21 21:12:39,655 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:12:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:40,520 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-21 21:12:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:12:40,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 21:12:40,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:40,530 INFO L225 Difference]: With dead ends: 250 [2020-08-21 21:12:40,530 INFO L226 Difference]: Without dead ends: 158 [2020-08-21 21:12:40,532 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 [2020-08-21 21:12:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-21 21:12:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-21 21:12:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 21:12:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-08-21 21:12:40,594 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 53 [2020-08-21 21:12:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:40,594 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-08-21 21:12:40,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:12:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-08-21 21:12:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 21:12:40,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:40,597 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] [2020-08-21 21:12:40,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:12:40,597 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:40,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2048791527, now seen corresponding path program 1 times [2020-08-21 21:12:40,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:40,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565115831] [2020-08-21 21:12:40,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:40,949 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:41,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:41,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:41,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:41,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:12:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:12:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:41,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:12:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:41,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565115831] [2020-08-21 21:12:41,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:41,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:12:41,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963651312] [2020-08-21 21:12:41,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:12:41,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:41,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:12:41,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:12:41,043 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 8 states. [2020-08-21 21:12:41,425 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:41,763 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:42,004 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:42,228 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:42,939 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:12:44,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:44,810 INFO L93 Difference]: Finished difference Result 451 states and 558 transitions. [2020-08-21 21:12:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:12:44,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 21:12:44,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:44,819 INFO L225 Difference]: With dead ends: 451 [2020-08-21 21:12:44,819 INFO L226 Difference]: Without dead ends: 344 [2020-08-21 21:12:44,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:12:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-08-21 21:12:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 286. [2020-08-21 21:12:44,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-21 21:12:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 345 transitions. [2020-08-21 21:12:44,899 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 345 transitions. Word has length 57 [2020-08-21 21:12:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:44,900 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 345 transitions. [2020-08-21 21:12:44,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:12:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 345 transitions. [2020-08-21 21:12:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 21:12:44,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:44,903 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] [2020-08-21 21:12:44,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:12:44,903 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:44,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1441609457, now seen corresponding path program 1 times [2020-08-21 21:12:44,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:44,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798501698] [2020-08-21 21:12:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,253 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:12:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:12:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 21:12:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:45,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798501698] [2020-08-21 21:12:45,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:45,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 21:12:45,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257977416] [2020-08-21 21:12:45,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:12:45,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:45,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:12:45,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:12:45,386 INFO L87 Difference]: Start difference. First operand 286 states and 345 transitions. Second operand 8 states. [2020-08-21 21:12:45,753 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:47,143 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:47,519 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:47,767 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:12:47,985 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:48,697 INFO L93 Difference]: Finished difference Result 878 states and 1149 transitions. [2020-08-21 21:12:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 21:12:48,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 21:12:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:48,703 INFO L225 Difference]: With dead ends: 878 [2020-08-21 21:12:48,703 INFO L226 Difference]: Without dead ends: 616 [2020-08-21 21:12:48,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 21:12:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-08-21 21:12:48,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 549. [2020-08-21 21:12:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-08-21 21:12:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 675 transitions. [2020-08-21 21:12:48,858 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 675 transitions. Word has length 63 [2020-08-21 21:12:48,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:48,858 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 675 transitions. [2020-08-21 21:12:48,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 21:12:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 675 transitions. [2020-08-21 21:12:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 21:12:48,862 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:48,863 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] [2020-08-21 21:12:48,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:12:48,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:48,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:48,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1167704009, now seen corresponding path program 1 times [2020-08-21 21:12:48,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:48,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974169042] [2020-08-21 21:12:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,123 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:12:49,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:12:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:12:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:12:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:12:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:12:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:12:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:12:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 21:12:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 21:12:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 21:12:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:12:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:12:49,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974169042] [2020-08-21 21:12:49,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:12:49,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:12:49,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240359507] [2020-08-21 21:12:49,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:12:49,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:12:49,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:12:49,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:12:49,203 INFO L87 Difference]: Start difference. First operand 549 states and 675 transitions. Second operand 6 states. [2020-08-21 21:12:49,504 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:12:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:12:51,006 INFO L93 Difference]: Finished difference Result 1300 states and 1694 transitions. [2020-08-21 21:12:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 21:12:51,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 21:12:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:12:51,013 INFO L225 Difference]: With dead ends: 1300 [2020-08-21 21:12:51,013 INFO L226 Difference]: Without dead ends: 775 [2020-08-21 21:12:51,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:12:51,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-08-21 21:12:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 705. [2020-08-21 21:12:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-08-21 21:12:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 860 transitions. [2020-08-21 21:12:51,165 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 860 transitions. Word has length 67 [2020-08-21 21:12:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:12:51,166 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 860 transitions. [2020-08-21 21:12:51,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:12:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 860 transitions. [2020-08-21 21:12:51,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 21:12:51,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:12:51,169 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] [2020-08-21 21:12:51,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:12:51,169 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:12:51,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:12:51,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1951258889, now seen corresponding path program 1 times [2020-08-21 21:12:51,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:12:51,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213825691] [2020-08-21 21:12:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:12:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:12:51,262 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:12:51,262 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:12:51,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:12:51,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:12:51 BoogieIcfgContainer [2020-08-21 21:12:51,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:12:51,290 INFO L168 Benchmark]: Toolchain (without parser) took 17029.55 ms. Allocated memory was 141.0 MB in the beginning and 507.5 MB in the end (delta: 366.5 MB). Free memory was 102.7 MB in the beginning and 222.0 MB in the end (delta: -119.3 MB). Peak memory consumption was 247.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:51,291 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-21 21:12:51,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.92 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 173.6 MB in the end (delta: -70.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:51,293 INFO L168 Benchmark]: Boogie Preprocessor took 91.05 ms. Allocated memory is still 205.0 MB. Free memory was 173.6 MB in the beginning and 169.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:51,294 INFO L168 Benchmark]: RCFGBuilder took 1184.23 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 168.7 MB in the beginning and 195.7 MB in the end (delta: -27.0 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:51,295 INFO L168 Benchmark]: TraceAbstraction took 15049.21 ms. Allocated memory was 237.0 MB in the beginning and 507.5 MB in the end (delta: 270.5 MB). Free memory was 195.7 MB in the beginning and 222.0 MB in the end (delta: -26.3 MB). Peak memory consumption was 244.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:12:51,299 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.92 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 173.6 MB in the end (delta: -70.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.05 ms. Allocated memory is still 205.0 MB. Free memory was 173.6 MB in the beginning and 169.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1184.23 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 168.7 MB in the beginning and 195.7 MB in the end (delta: -27.0 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15049.21 ms. Allocated memory was 237.0 MB in the beginning and 507.5 MB in the end (delta: 270.5 MB). Free memory was 195.7 MB in the beginning and 222.0 MB in the end (delta: -26.3 MB). Peak memory consumption was 244.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 977]: 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; [L225] int pumpRunning = 0; [L226] int systemActive = 1; [L473] int cleanupTimeShifts = 4; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L549] int retValue_acc ; [L550] int tmp ; [L554] FCALL select_helpers() [L555] FCALL select_features() [L556] CALL, EXPR valid_product() [L598] int retValue_acc ; [L601] retValue_acc = 1 [L602] return (retValue_acc); [L556] RET, EXPR valid_product() [L556] tmp = valid_product() [L558] COND TRUE \read(tmp) [L560] FCALL setup() [L561] CALL runTest() [L540] CALL test() [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 [L164] COND TRUE 1 [L166] COND TRUE splverifierCounter < 4 [L172] tmp = __VERIFIER_nondet_int() [L174] COND TRUE \read(tmp) [L176] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L176] RET waterRise() [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___2)) [L198] tmp___1 = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp___1) [L202] CALL stopSystem() [L426] COND FALSE !(\read(pumpRunning)) [L433] systemActive = 0 [L202] RET stopSystem() [L209] CALL timeShift() [L233] COND FALSE !(\read(pumpRunning)) [L240] COND FALSE !(\read(systemActive)) [L248] CALL __utac_acc__Specification3_spec__1() [L440] int tmp ; [L441] int tmp___0 ; [L442] int tmp___1 ; [L446] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L446] RET, EXPR isMethaneLevelCritical() [L446] tmp = isMethaneLevelCritical() [L448] COND FALSE !(\read(tmp)) [L452] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L452] RET, EXPR getWaterLevel() [L452] tmp___0 = getWaterLevel() [L454] COND TRUE tmp___0 == 2 [L456] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L456] RET, EXPR isPumpRunning() [L456] tmp___1 = isPumpRunning() [L458] COND FALSE !(\read(tmp___1)) [L462] CALL __automaton_fail() [L977] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 244 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 641 SDtfs, 1471 SDslu, 411 SDs, 0 SdLazy, 2277 SolverSat, 927 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=705occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 256 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 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...