/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=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:03:52,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:03:52,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:03:52,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:03:52,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:03:52,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:03:52,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:03:52,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:03:52,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:03:52,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:03:52,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:03:52,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:03:52,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:03:52,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:03:52,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:03:52,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:03:52,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:03:52,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:03:52,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:03:52,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:03:52,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:03:52,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:03:52,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:03:52,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:03:52,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:03:52,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:03:52,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:03:52,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:03:52,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:03:52,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:03:52,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:03:52,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:03:52,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:03:52,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:03:52,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:03:52,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:03:52,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:03:52,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:03:52,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:03:52,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:03:52,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:03:52,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:03:52,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:03:52,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:03:52,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:03:52,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:03:52,432 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:03:52,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:03:52,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:03:52,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:03:52,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:03:52,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:03:52,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:03:52,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:03:52,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:03:52,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:03:52,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:03:52,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:03:52,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:03:52,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:03:52,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:03:52,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:03:52,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:03:52,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:03:52,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:03:52,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:03:52,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:03:52,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:03:52,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:03:52,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:03:52,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:03:52,437 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:03:52,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:03:52,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:03:52,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:03:52,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:03:52,730 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:03:52,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-18 20:03:52,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eab18544/050fb4e5ab9943ae99d5f51a011ad62d/FLAGebdd8c05a [2020-08-18 20:03:53,300 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:03:53,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-18 20:03:53,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eab18544/050fb4e5ab9943ae99d5f51a011ad62d/FLAGebdd8c05a [2020-08-18 20:03:53,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eab18544/050fb4e5ab9943ae99d5f51a011ad62d [2020-08-18 20:03:53,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:03:53,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:03:53,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:03:53,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:03:53,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:03:53,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:03:53" (1/1) ... [2020-08-18 20:03:53,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:53, skipping insertion in model container [2020-08-18 20:03:53,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:03:53" (1/1) ... [2020-08-18 20:03:53,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:03:53,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:03:53,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:03:54,082 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:03:54,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:03:54,211 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:03:54,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54 WrapperNode [2020-08-18 20:03:54,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:03:54,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:03:54,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:03:54,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:03:54,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (1/1) ... [2020-08-18 20:03:54,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (1/1) ... [2020-08-18 20:03:54,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (1/1) ... [2020-08-18 20:03:54,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (1/1) ... [2020-08-18 20:03:54,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (1/1) ... [2020-08-18 20:03:54,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (1/1) ... [2020-08-18 20:03:54,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (1/1) ... [2020-08-18 20:03:54,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:03:54,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:03:54,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:03:54,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:03:54,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:03:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:03:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:03:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:03:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:03:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:03:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:03:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:03:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:03:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:03:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:03:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:03:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:03:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:03:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:03:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:03:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:03:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:03:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:03:54,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:03:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:03:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:03:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:03:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:03:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:03:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:03:54,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:03:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:03:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:03:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:03:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:03:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:03:54,362 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:03:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:03:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:03:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:03:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:03:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:03:54,363 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:03:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:03:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:03:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:03:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:03:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:03:54,364 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:03:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:03:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:03:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:03:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:03:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:03:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:03:54,365 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:03:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:03:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:03:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:03:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:03:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:03:54,366 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:03:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:03:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:03:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:03:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:03:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:03:54,367 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:03:54,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:03:54,369 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:03:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 20:03:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:03:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:03:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:03:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:03:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:03:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:03:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:03:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:03:55,343 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:03:55,344 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:03:55,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:03:55 BoogieIcfgContainer [2020-08-18 20:03:55,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:03:55,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:03:55,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:03:55,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:03:55,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:03:53" (1/3) ... [2020-08-18 20:03:55,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ed872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:03:55, skipping insertion in model container [2020-08-18 20:03:55,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:03:54" (2/3) ... [2020-08-18 20:03:55,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ed872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:03:55, skipping insertion in model container [2020-08-18 20:03:55,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:03:55" (3/3) ... [2020-08-18 20:03:55,362 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-18 20:03:55,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:03:55,380 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:03:55,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:03:55,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:03:55,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:03:55,417 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:03:55,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:03:55,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:03:55,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:03:55,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:03:55,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:03:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-18 20:03:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 20:03:55,446 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:03:55,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:03:55,448 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:03:55,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:03:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-18 20:03:55,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:03:55,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272236387] [2020-08-18 20:03:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:03:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:56,069 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:03:56,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:03:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:03:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:03:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:03:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:56,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:03:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:56,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:03:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:56,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:03:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:56,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:03:56,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272236387] [2020-08-18 20:03:56,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:03:56,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:03:56,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387297235] [2020-08-18 20:03:56,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:03:56,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:03:56,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:03:56,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:03:56,169 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-18 20:03:57,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:03:57,164 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-18 20:03:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:03:57,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 20:03:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:03:57,180 INFO L225 Difference]: With dead ends: 258 [2020-08-18 20:03:57,180 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 20:03:57,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:03:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 20:03:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-18 20:03:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 20:03:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-18 20:03:57,268 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-18 20:03:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:03:57,269 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-18 20:03:57,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:03:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-18 20:03:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 20:03:57,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:03:57,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:03:57,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:03:57,273 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:03:57,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:03:57,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-18 20:03:57,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:03:57,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123032216] [2020-08-18 20:03:57,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:03:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,618 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:03:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:03:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:03:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:03:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:03:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:03:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:03:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:03:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:03:57,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123032216] [2020-08-18 20:03:57,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:03:57,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:03:57,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157524741] [2020-08-18 20:03:57,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:03:57,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:03:57,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:03:57,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:03:57,704 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-18 20:03:58,134 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:03:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:03:58,734 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-18 20:03:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:03:58,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 20:03:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:03:58,739 INFO L225 Difference]: With dead ends: 187 [2020-08-18 20:03:58,740 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 20:03:58,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:03:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 20:03:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 20:03:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 20:03:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 20:03:58,772 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-18 20:03:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:03:58,773 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 20:03:58,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:03:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 20:03:58,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:03:58,775 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:03:58,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:03:58,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:03:58,775 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:03:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:03:58,776 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-18 20:03:58,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:03:58,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099382617] [2020-08-18 20:03:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:03:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,083 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:03:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:03:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:03:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:03:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:03:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:03:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:03:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:03:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:03:59,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:03:59,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099382617] [2020-08-18 20:03:59,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:03:59,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:03:59,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075958369] [2020-08-18 20:03:59,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:03:59,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:03:59,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:03:59,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:03:59,152 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-18 20:03:59,503 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:03:59,787 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:00,017 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:00,251 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:01,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:01,144 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-18 20:04:01,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:04:01,144 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 20:04:01,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:01,148 INFO L225 Difference]: With dead ends: 200 [2020-08-18 20:04:01,148 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 20:04:01,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:04:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 20:04:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 20:04:01,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 20:04:01,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-18 20:04:01,179 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-18 20:04:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:01,180 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-18 20:04:01,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:04:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-18 20:04:01,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 20:04:01,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:01,182 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] [2020-08-18 20:04:01,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:04:01,182 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:01,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-18 20:04:01,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:01,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323164838] [2020-08-18 20:04:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,446 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:04:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 20:04:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 20:04:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:01,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323164838] [2020-08-18 20:04:01,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:01,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:04:01,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864151709] [2020-08-18 20:04:01,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:04:01,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:01,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:04:01,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:04:01,554 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-18 20:04:01,884 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:02,940 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:03,372 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-18 20:04:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:04:03,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 20:04:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:03,376 INFO L225 Difference]: With dead ends: 288 [2020-08-18 20:04:03,377 INFO L226 Difference]: Without dead ends: 212 [2020-08-18 20:04:03,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:04:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-18 20:04:03,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-18 20:04:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 20:04:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-18 20:04:03,422 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-18 20:04:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:03,423 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-18 20:04:03,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:04:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-18 20:04:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 20:04:03,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:03,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:03,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:04:03,425 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-18 20:04:03,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:03,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829185753] [2020-08-18 20:04:03,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,739 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:04:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:04:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 20:04:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:03,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829185753] [2020-08-18 20:04:03,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:03,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:04:03,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804466646] [2020-08-18 20:04:03,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:04:03,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:03,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:04:03,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:04:03,821 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-18 20:04:04,184 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:05,166 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:05,416 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:05,641 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:05,858 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:06,126 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:06,738 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-18 20:04:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:04:06,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-18 20:04:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:06,747 INFO L225 Difference]: With dead ends: 505 [2020-08-18 20:04:06,747 INFO L226 Difference]: Without dead ends: 360 [2020-08-18 20:04:06,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:04:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-18 20:04:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-18 20:04:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 20:04:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-18 20:04:06,822 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-18 20:04:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:06,823 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-18 20:04:06,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:04:06,823 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-18 20:04:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 20:04:06,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:06,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:06,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:04:06,826 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:06,826 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-18 20:04:06,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:06,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911027855] [2020-08-18 20:04:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,074 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:07,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:04:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:04:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:04:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:07,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911027855] [2020-08-18 20:04:07,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:07,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:04:07,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014322962] [2020-08-18 20:04:07,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:04:07,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:07,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:04:07,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:04:07,214 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-18 20:04:07,579 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:08,588 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:08,795 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:09,044 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:09,283 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:09,533 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:10,106 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-18 20:04:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:04:10,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 20:04:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:10,113 INFO L225 Difference]: With dead ends: 402 [2020-08-18 20:04:10,113 INFO L226 Difference]: Without dead ends: 399 [2020-08-18 20:04:10,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:04:10,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-18 20:04:10,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-18 20:04:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-18 20:04:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-18 20:04:10,172 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-18 20:04:10,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:10,173 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-18 20:04:10,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:04:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-18 20:04:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 20:04:10,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:10,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:10,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:04:10,175 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:10,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:10,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-18 20:04:10,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:10,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353631143] [2020-08-18 20:04:10,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,412 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:10,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:04:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:04:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 20:04:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:10,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353631143] [2020-08-18 20:04:10,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:10,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:04:10,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44588900] [2020-08-18 20:04:10,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:04:10,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:10,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:04:10,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:04:10,526 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-18 20:04:11,409 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:04:11,643 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:04:11,877 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:12,099 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:12,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:12,874 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-18 20:04:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:04:12,874 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-18 20:04:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:12,878 INFO L225 Difference]: With dead ends: 672 [2020-08-18 20:04:12,878 INFO L226 Difference]: Without dead ends: 403 [2020-08-18 20:04:12,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:04:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-18 20:04:12,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-18 20:04:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-18 20:04:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-18 20:04:12,941 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-18 20:04:12,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:12,942 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-18 20:04:12,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:04:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-18 20:04:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 20:04:12,944 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:12,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:12,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:04:12,944 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:12,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-18 20:04:12,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:12,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102134390] [2020-08-18 20:04:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,187 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:13,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:04:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:04:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 20:04:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:13,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102134390] [2020-08-18 20:04:13,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:13,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:04:13,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069640714] [2020-08-18 20:04:13,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:04:13,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:13,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:04:13,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:04:13,339 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-18 20:04:13,908 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:14,134 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:14,350 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:14,964 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:15,201 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:15,427 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:04:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:16,276 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-18 20:04:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:04:16,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-18 20:04:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:16,280 INFO L225 Difference]: With dead ends: 696 [2020-08-18 20:04:16,280 INFO L226 Difference]: Without dead ends: 417 [2020-08-18 20:04:16,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:04:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-18 20:04:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-18 20:04:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-18 20:04:16,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-18 20:04:16,341 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-18 20:04:16,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:16,342 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-18 20:04:16,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:04:16,342 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-18 20:04:16,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 20:04:16,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:16,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:16,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:04:16,344 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:16,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:16,345 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-18 20:04:16,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:16,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305706550] [2020-08-18 20:04:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,600 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:04:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:04:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:04:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:04:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:04:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:04:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 20:04:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:04:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:04:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:04:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:04:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:04:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 20:04:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:04:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:04:16,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305706550] [2020-08-18 20:04:16,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:04:16,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:04:16,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263057458] [2020-08-18 20:04:16,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:04:16,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:04:16,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:04:16,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:04:16,727 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-18 20:04:17,188 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:17,665 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:04:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:04:19,395 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-18 20:04:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:04:19,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-18 20:04:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:04:19,402 INFO L225 Difference]: With dead ends: 1018 [2020-08-18 20:04:19,403 INFO L226 Difference]: Without dead ends: 731 [2020-08-18 20:04:19,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:04:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-18 20:04:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-18 20:04:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-18 20:04:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-18 20:04:19,543 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-18 20:04:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:04:19,544 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-18 20:04:19,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:04:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-18 20:04:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:04:19,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:04:19,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:04:19,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:04:19,549 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:04:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:04:19,550 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-18 20:04:19,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:04:19,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035928830] [2020-08-18 20:04:19,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:04:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:04:19,610 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:04:19,610 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:04:19,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:04:19,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:04:19 BoogieIcfgContainer [2020-08-18 20:04:19,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:04:19,639 INFO L168 Benchmark]: Toolchain (without parser) took 26062.72 ms. Allocated memory was 138.9 MB in the beginning and 604.0 MB in the end (delta: 465.0 MB). Free memory was 101.1 MB in the beginning and 329.7 MB in the end (delta: -228.6 MB). Peak memory consumption was 236.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:19,640 INFO L168 Benchmark]: CDTParser took 0.20 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. [2020-08-18 20:04:19,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.01 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 171.3 MB in the end (delta: -70.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:19,641 INFO L168 Benchmark]: Boogie Preprocessor took 86.99 ms. Allocated memory is still 201.9 MB. Free memory was 171.3 MB in the beginning and 167.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:19,642 INFO L168 Benchmark]: RCFGBuilder took 1051.68 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 167.2 MB in the beginning and 199.5 MB in the end (delta: -32.3 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:19,643 INFO L168 Benchmark]: TraceAbstraction took 24282.74 ms. Allocated memory was 234.4 MB in the beginning and 604.0 MB in the end (delta: 369.6 MB). Free memory was 199.5 MB in the beginning and 329.7 MB in the end (delta: -130.3 MB). Peak memory consumption was 239.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:04:19,647 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 635.01 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.9 MB in the beginning and 171.3 MB in the end (delta: -70.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.99 ms. Allocated memory is still 201.9 MB. Free memory was 171.3 MB in the beginning and 167.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1051.68 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 167.2 MB in the beginning and 199.5 MB in the end (delta: -32.3 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24282.74 ms. Allocated memory was 234.4 MB in the beginning and 604.0 MB in the end (delta: 369.6 MB). Free memory was 199.5 MB in the beginning and 329.7 MB in the end (delta: -130.3 MB). Peak memory consumption was 239.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.2s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 1722 SDslu, 880 SDs, 0 SdLazy, 4212 SolverSat, 1158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...