/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:59:17,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:59:17,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:59:17,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:59:17,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:59:17,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:59:17,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:59:17,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:59:17,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:59:17,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:59:17,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:59:17,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:59:17,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:59:17,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:59:17,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:59:17,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:59:17,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:59:17,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:59:17,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:59:17,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:59:17,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:59:17,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:59:17,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:59:17,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:59:17,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:59:17,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:59:17,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:59:17,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:59:17,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:59:17,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:59:17,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:59:17,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:59:17,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:59:17,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:59:17,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:59:17,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:59:17,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:59:17,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:59:17,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:59:17,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:59:17,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:59:17,243 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 [2020-08-19 00:59:17,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:59:17,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:59:17,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:59:17,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:59:17,268 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:59:17,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:59:17,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:59:17,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:59:17,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:59:17,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:59:17,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:59:17,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:59:17,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:59:17,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:59:17,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:59:17,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:59:17,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:59:17,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:59:17,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:59:17,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:59:17,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:59:17,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:59:17,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:59:17,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:59:17,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:59:17,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:59:17,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:59:17,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:59:17,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:59:17,273 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=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:59:17,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:59:17,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:59:17,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:59:17,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:59:17,614 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:59:17,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-19 00:59:17,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cca14111/dffcd990898d4caaa793ef8f61bb7d57/FLAG72ed016f7 [2020-08-19 00:59:18,218 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:59:18,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product60.cil.c [2020-08-19 00:59:18,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cca14111/dffcd990898d4caaa793ef8f61bb7d57/FLAG72ed016f7 [2020-08-19 00:59:18,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cca14111/dffcd990898d4caaa793ef8f61bb7d57 [2020-08-19 00:59:18,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:59:18,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:59:18,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:59:18,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:59:18,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:59:18,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:59:18" (1/1) ... [2020-08-19 00:59:18,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10140435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:18, skipping insertion in model container [2020-08-19 00:59:18,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:59:18" (1/1) ... [2020-08-19 00:59:18,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:59:18,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:59:19,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:59:19,062 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:59:19,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:59:19,242 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:59:19,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19 WrapperNode [2020-08-19 00:59:19,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:59:19,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:59:19,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:59:19,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:59:19,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (1/1) ... [2020-08-19 00:59:19,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (1/1) ... [2020-08-19 00:59:19,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (1/1) ... [2020-08-19 00:59:19,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (1/1) ... [2020-08-19 00:59:19,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (1/1) ... [2020-08-19 00:59:19,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (1/1) ... [2020-08-19 00:59:19,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (1/1) ... [2020-08-19 00:59:19,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:59:19,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:59:19,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:59:19,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:59:19,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (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 [2020-08-19 00:59:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:59:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:59:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:59:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:59:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:59:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:59:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:59:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:59:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:59:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:59:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:59:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:59:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:59:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:59:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:59:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:59:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:59:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:59:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:59:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:59:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:59:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:59:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:59:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:59:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:59:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:59:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:59:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:59:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:59:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:59:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:59:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:59:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:59:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:59:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:59:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:59:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:59:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:59:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:59:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:59:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:59:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:59:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:59:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:59:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:59:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:59:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:59:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:59:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:59:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:59:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:59:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:59:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:59:19,420 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:59:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:59:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:59:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:59:19,421 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:59:19,422 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:59:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:59:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:59:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:59:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:59:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:59:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:59:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:59:19,423 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:59:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:59:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:59:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:59:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:59:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:59:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:59:19,424 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:59:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:59:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:59:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:59:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:59:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:59:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:59:19,425 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:59:19,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:59:20,498 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:59:20,498 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:59:20,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:59:20 BoogieIcfgContainer [2020-08-19 00:59:20,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:59:20,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:59:20,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:59:20,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:59:20,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:59:18" (1/3) ... [2020-08-19 00:59:20,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2fe123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:59:20, skipping insertion in model container [2020-08-19 00:59:20,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:59:19" (2/3) ... [2020-08-19 00:59:20,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2fe123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:59:20, skipping insertion in model container [2020-08-19 00:59:20,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:59:20" (3/3) ... [2020-08-19 00:59:20,513 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product60.cil.c [2020-08-19 00:59:20,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:59:20,533 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:59:20,549 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:59:20,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:59:20,577 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:59:20,577 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:59:20,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:59:20,578 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:59:20,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:59:20,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:59:20,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:59:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-19 00:59:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:59:20,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:20,615 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] [2020-08-19 00:59:20,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:20,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1529441714, now seen corresponding path program 1 times [2020-08-19 00:59:20,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:20,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141661395] [2020-08-19 00:59:20,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,325 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:59:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:59:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:59:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:59:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:59:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:59:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:59:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:59:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:59:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:59:21,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141661395] [2020-08-19 00:59:21,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:59:21,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:59:21,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084059355] [2020-08-19 00:59:21,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:59:21,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:59:21,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:59:21,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:59:21,497 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 3 states. [2020-08-19 00:59:22,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:22,828 INFO L93 Difference]: Finished difference Result 358 states and 461 transitions. [2020-08-19 00:59:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:59:22,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 00:59:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:22,846 INFO L225 Difference]: With dead ends: 358 [2020-08-19 00:59:22,846 INFO L226 Difference]: Without dead ends: 193 [2020-08-19 00:59:22,852 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 [2020-08-19 00:59:22,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-19 00:59:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2020-08-19 00:59:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-19 00:59:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-19 00:59:22,958 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 52 [2020-08-19 00:59:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:22,959 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-19 00:59:22,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:59:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-19 00:59:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 00:59:22,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:22,964 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] [2020-08-19 00:59:22,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:59:22,964 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:22,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2080089166, now seen corresponding path program 1 times [2020-08-19 00:59:22,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:22,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143308437] [2020-08-19 00:59:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,422 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:59:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:59:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:59:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:59:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:59:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:59:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:59:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:59:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:59:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:59:23,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143308437] [2020-08-19 00:59:23,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:59:23,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:59:23,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295354660] [2020-08-19 00:59:23,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:59:23,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:59:23,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:59:23,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:59:23,473 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 4 states. [2020-08-19 00:59:23,866 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:59:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:24,906 INFO L93 Difference]: Finished difference Result 281 states and 340 transitions. [2020-08-19 00:59:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:59:24,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 00:59:24,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:24,913 INFO L225 Difference]: With dead ends: 281 [2020-08-19 00:59:24,916 INFO L226 Difference]: Without dead ends: 177 [2020-08-19 00:59:24,918 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 [2020-08-19 00:59:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-19 00:59:24,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 147. [2020-08-19 00:59:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-19 00:59:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2020-08-19 00:59:24,992 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 53 [2020-08-19 00:59:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:24,993 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2020-08-19 00:59:24,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:59:24,993 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2020-08-19 00:59:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 00:59:25,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:25,008 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] [2020-08-19 00:59:25,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:59:25,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:25,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:25,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1856420908, now seen corresponding path program 1 times [2020-08-19 00:59:25,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:25,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460437344] [2020-08-19 00:59:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,394 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:59:25,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:59:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:59:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:59:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:59:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:59:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:59:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:59:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:59:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:59:25,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460437344] [2020-08-19 00:59:25,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:59:25,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:59:25,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452559423] [2020-08-19 00:59:25,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:59:25,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:59:25,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:59:25,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:59:25,499 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand 8 states. [2020-08-19 00:59:25,840 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:59:26,141 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:26,418 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:26,639 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:27,323 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:59:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:29,505 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2020-08-19 00:59:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:59:29,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 00:59:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:29,511 INFO L225 Difference]: With dead ends: 506 [2020-08-19 00:59:29,511 INFO L226 Difference]: Without dead ends: 383 [2020-08-19 00:59:29,513 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 [2020-08-19 00:59:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-19 00:59:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 314. [2020-08-19 00:59:29,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-08-19 00:59:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 377 transitions. [2020-08-19 00:59:29,594 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 377 transitions. Word has length 58 [2020-08-19 00:59:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:29,595 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 377 transitions. [2020-08-19 00:59:29,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:59:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 377 transitions. [2020-08-19 00:59:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 00:59:29,597 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:29,597 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, 1, 1, 1, 1, 1, 1] [2020-08-19 00:59:29,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:59:29,597 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:29,598 INFO L82 PathProgramCache]: Analyzing trace with hash 425111279, now seen corresponding path program 1 times [2020-08-19 00:59:29,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:29,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687524663] [2020-08-19 00:59:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,888 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:59:29,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:59:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:59:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:59:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:59:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:59:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:59:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:59:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:59:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:59:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:59:29,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687524663] [2020-08-19 00:59:29,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:59:29,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:59:29,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934920457] [2020-08-19 00:59:29,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:59:29,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:59:29,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:59:29,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:59:29,962 INFO L87 Difference]: Start difference. First operand 314 states and 377 transitions. Second operand 8 states. [2020-08-19 00:59:30,311 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:59:31,698 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:32,077 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:32,354 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:32,597 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:59:33,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:33,501 INFO L93 Difference]: Finished difference Result 973 states and 1259 transitions. [2020-08-19 00:59:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:59:33,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 00:59:33,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:33,513 INFO L225 Difference]: With dead ends: 973 [2020-08-19 00:59:33,513 INFO L226 Difference]: Without dead ends: 683 [2020-08-19 00:59:33,515 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 [2020-08-19 00:59:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2020-08-19 00:59:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 609. [2020-08-19 00:59:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-08-19 00:59:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 743 transitions. [2020-08-19 00:59:33,663 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 743 transitions. Word has length 63 [2020-08-19 00:59:33,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:33,663 INFO L479 AbstractCegarLoop]: Abstraction has 609 states and 743 transitions. [2020-08-19 00:59:33,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:59:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 743 transitions. [2020-08-19 00:59:33,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 00:59:33,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:33,667 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] [2020-08-19 00:59:33,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:59:33,668 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:33,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:33,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1458119221, now seen corresponding path program 1 times [2020-08-19 00:59:33,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:33,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39050911] [2020-08-19 00:59:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:33,945 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:59:33,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:59:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:33,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:59:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:33,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:59:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:33,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:59:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:33,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:59:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:34,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:59:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:34,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:59:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:34,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:59:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:34,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:59:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 00:59:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:59:34,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39050911] [2020-08-19 00:59:34,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:59:34,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:59:34,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112786301] [2020-08-19 00:59:34,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:59:34,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:59:34,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:59:34,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:59:34,035 INFO L87 Difference]: Start difference. First operand 609 states and 743 transitions. Second operand 6 states. [2020-08-19 00:59:34,317 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:59:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:36,317 INFO L93 Difference]: Finished difference Result 1435 states and 1848 transitions. [2020-08-19 00:59:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:59:36,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-19 00:59:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:36,326 INFO L225 Difference]: With dead ends: 1435 [2020-08-19 00:59:36,326 INFO L226 Difference]: Without dead ends: 850 [2020-08-19 00:59:36,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:59:36,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-08-19 00:59:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 777. [2020-08-19 00:59:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2020-08-19 00:59:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 940 transitions. [2020-08-19 00:59:36,492 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 940 transitions. Word has length 67 [2020-08-19 00:59:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:36,492 INFO L479 AbstractCegarLoop]: Abstraction has 777 states and 940 transitions. [2020-08-19 00:59:36,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:59:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 940 transitions. [2020-08-19 00:59:36,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 00:59:36,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:36,494 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] [2020-08-19 00:59:36,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:59:36,495 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:36,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1610113419, now seen corresponding path program 1 times [2020-08-19 00:59:36,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:36,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789868953] [2020-08-19 00:59:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:59:36,595 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:59:36,596 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:59:36,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:59:36,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:59:36 BoogieIcfgContainer [2020-08-19 00:59:36,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:59:36,637 INFO L168 Benchmark]: Toolchain (without parser) took 18045.76 ms. Allocated memory was 138.9 MB in the beginning and 555.7 MB in the end (delta: 416.8 MB). Free memory was 100.8 MB in the beginning and 120.4 MB in the end (delta: -19.6 MB). Peak memory consumption was 397.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:36,640 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:59:36,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.88 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.6 MB in the beginning and 164.0 MB in the end (delta: -63.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:36,642 INFO L168 Benchmark]: Boogie Preprocessor took 92.47 ms. Allocated memory is still 200.8 MB. Free memory was 164.0 MB in the beginning and 160.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:36,644 INFO L168 Benchmark]: RCFGBuilder took 1167.05 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 160.0 MB in the beginning and 186.9 MB in the end (delta: -27.0 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:36,645 INFO L168 Benchmark]: TraceAbstraction took 16126.84 ms. Allocated memory was 233.3 MB in the beginning and 555.7 MB in the end (delta: 322.4 MB). Free memory was 185.5 MB in the beginning and 120.4 MB in the end (delta: 65.1 MB). Peak memory consumption was 387.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:36,656 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.88 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 100.6 MB in the beginning and 164.0 MB in the end (delta: -63.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.47 ms. Allocated memory is still 200.8 MB. Free memory was 164.0 MB in the beginning and 160.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1167.05 ms. Allocated memory was 200.8 MB in the beginning and 233.3 MB in the end (delta: 32.5 MB). Free memory was 160.0 MB in the beginning and 186.9 MB in the end (delta: -27.0 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16126.84 ms. Allocated memory was 233.3 MB in the beginning and 555.7 MB in the end (delta: 322.4 MB). Free memory was 185.5 MB in the beginning and 120.4 MB in the end (delta: 65.1 MB). Peak memory consumption was 387.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 769]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L124] int pumpRunning = 0; [L125] int systemActive = 1; [L568] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L812] int waterLevel = 1; [L813] int methaneLevelCritical = 0; [L915] int cleanupTimeShifts = 4; [L988] int retValue_acc ; [L989] int tmp ; [L993] FCALL select_helpers() [L994] FCALL select_features() [L995] CALL, EXPR valid_product() [L803] int retValue_acc ; [L806] retValue_acc = 1 [L807] return (retValue_acc); [L995] RET, EXPR valid_product() [L995] tmp = valid_product() [L997] COND TRUE \read(tmp) [L999] FCALL setup() [L1000] CALL runTest() [L982] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L830] COND TRUE waterLevel < 2 [L831] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___1) [L96] CALL stopSystem() [L343] COND FALSE !(\read(pumpRunning)) [L350] systemActive = 0 [L96] RET stopSystem() [L103] CALL timeShift() [L132] COND FALSE !(\read(pumpRunning)) [L139] COND FALSE !(\read(systemActive)) [L147] CALL __utac_acc__Specification3_spec__1() [L366] int tmp ; [L367] int tmp___0 ; [L368] int tmp___1 ; [L372] CALL, EXPR isMethaneLevelCritical() [L851] int retValue_acc ; [L854] retValue_acc = methaneLevelCritical [L855] return (retValue_acc); [L372] RET, EXPR isMethaneLevelCritical() [L372] tmp = isMethaneLevelCritical() [L374] COND FALSE !(\read(tmp)) [L378] CALL, EXPR getWaterLevel() [L883] int retValue_acc ; [L886] retValue_acc = waterLevel [L887] return (retValue_acc); [L378] RET, EXPR getWaterLevel() [L378] tmp___0 = getWaterLevel() [L380] COND TRUE tmp___0 == 2 [L382] CALL, EXPR isPumpRunning() [L257] int retValue_acc ; [L260] retValue_acc = pumpRunning [L261] return (retValue_acc); [L382] RET, EXPR isPumpRunning() [L382] tmp___1 = isPumpRunning() [L384] COND FALSE !(\read(tmp___1)) [L388] CALL __automaton_fail() [L769] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 719 SDtfs, 1300 SDslu, 479 SDs, 0 SdLazy, 2650 SolverSat, 820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8s 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=777occurred 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, 283 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 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...