/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:09:19,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:09:19,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:09:19,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:09:19,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:09:19,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:09:19,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:09:19,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:09:19,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:09:19,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:09:19,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:09:19,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:09:19,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:09:19,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:09:19,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:09:19,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:09:19,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:09:19,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:09:19,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:09:19,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:09:19,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:09:19,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:09:19,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:09:19,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:09:19,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:09:19,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:09:19,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:09:19,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:09:19,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:09:19,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:09:19,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:09:19,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:09:19,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:09:19,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:09:19,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:09:19,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:09:19,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:09:19,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:09:19,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:09:19,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:09:19,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:09:19,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 04:09:19,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:09:19,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:09:19,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:09:19,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:09:19,394 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:09:19,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:09:19,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:09:19,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:09:19,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:09:19,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:09:19,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:09:19,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:09:19,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:09:19,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:09:19,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:09:19,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:09:19,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:09:19,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:09:19,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:09:19,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:09:19,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:09:19,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:09:19,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:09:19,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:09:19,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:09:19,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:09:19,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:09:19,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:09:19,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:09:19,399 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:09:19,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:09:19,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:09:19,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:09:19,740 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:09:19,741 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:09:19,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-19 04:09:19,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7fa839aa/c05164512eac464089f41581211dd741/FLAG7f6a932fe [2020-08-19 04:09:20,337 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:09:20,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-08-19 04:09:20,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7fa839aa/c05164512eac464089f41581211dd741/FLAG7f6a932fe [2020-08-19 04:09:20,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7fa839aa/c05164512eac464089f41581211dd741 [2020-08-19 04:09:20,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:09:20,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:09:20,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:09:20,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:09:20,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:09:20,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:09:20" (1/1) ... [2020-08-19 04:09:20,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7603d3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:20, skipping insertion in model container [2020-08-19 04:09:20,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:09:20" (1/1) ... [2020-08-19 04:09:20,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:09:20,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:09:21,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:09:21,138 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:09:21,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:09:21,270 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:09:21,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21 WrapperNode [2020-08-19 04:09:21,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:09:21,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:09:21,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:09:21,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:09:21,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (1/1) ... [2020-08-19 04:09:21,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (1/1) ... [2020-08-19 04:09:21,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (1/1) ... [2020-08-19 04:09:21,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (1/1) ... [2020-08-19 04:09:21,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (1/1) ... [2020-08-19 04:09:21,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (1/1) ... [2020-08-19 04:09:21,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (1/1) ... [2020-08-19 04:09:21,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:09:21,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:09:21,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:09:21,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:09:21,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:09:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:09:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:09:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:09:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:09:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:09:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:09:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:09:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:09:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:09:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:09:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:09:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:09:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:09:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:09:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:09:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:09:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:09:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:09:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:09:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:09:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:09:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:09:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:09:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:09:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:09:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:09:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:09:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:09:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:09:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:09:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:09:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:09:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 04:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:09:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:09:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:09:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:09:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:09:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:09:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:09:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:09:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:09:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:09:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:09:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:09:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:09:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:09:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:09:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:09:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:09:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:09:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:09:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:09:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:09:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:09:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:09:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:09:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:09:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:09:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:09:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:09:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:09:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:09:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:09:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:09:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:09:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:09:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:09:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:09:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:09:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:09:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:09:21,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:09:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:09:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:09:22,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:09:22,447 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:09:22,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:09:22 BoogieIcfgContainer [2020-08-19 04:09:22,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:09:22,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:09:22,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:09:22,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:09:22,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:09:20" (1/3) ... [2020-08-19 04:09:22,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d226303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:09:22, skipping insertion in model container [2020-08-19 04:09:22,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:09:21" (2/3) ... [2020-08-19 04:09:22,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d226303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:09:22, skipping insertion in model container [2020-08-19 04:09:22,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:09:22" (3/3) ... [2020-08-19 04:09:22,461 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-08-19 04:09:22,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:09:22,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:09:22,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:09:22,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:09:22,519 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:09:22,519 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:09:22,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:09:22,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:09:22,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:09:22,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:09:22,520 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:09:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-08-19 04:09:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 04:09:22,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:22,554 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] [2020-08-19 04:09:22,555 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:22,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:22,561 INFO L82 PathProgramCache]: Analyzing trace with hash 922466731, now seen corresponding path program 1 times [2020-08-19 04:09:22,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:22,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958932873] [2020-08-19 04:09:22,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:23,261 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:23,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:23,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:09:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:09:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:23,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958932873] [2020-08-19 04:09:23,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:23,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:09:23,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857378115] [2020-08-19 04:09:23,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:09:23,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:23,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:09:23,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:09:23,491 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 3 states. [2020-08-19 04:09:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:24,656 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-19 04:09:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:09:24,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 04:09:24,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:24,681 INFO L225 Difference]: With dead ends: 297 [2020-08-19 04:09:24,682 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 04:09:24,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:09:24,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 04:09:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-19 04:09:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 04:09:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-19 04:09:24,853 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-19 04:09:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:24,854 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-19 04:09:24,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:09:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-19 04:09:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 04:09:24,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:24,861 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] [2020-08-19 04:09:24,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:09:24,862 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:24,862 INFO L82 PathProgramCache]: Analyzing trace with hash 288176866, now seen corresponding path program 1 times [2020-08-19 04:09:24,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:24,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146379920] [2020-08-19 04:09:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:25,272 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:25,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:25,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 04:09:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:25,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:25,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146379920] [2020-08-19 04:09:25,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:25,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:09:25,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594234559] [2020-08-19 04:09:25,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:09:25,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:25,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:09:25,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:09:25,320 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-19 04:09:25,754 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:26,585 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-19 04:09:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:09:26,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 04:09:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:26,589 INFO L225 Difference]: With dead ends: 230 [2020-08-19 04:09:26,590 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 04:09:26,591 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 [2020-08-19 04:09:26,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 04:09:26,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-19 04:09:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 04:09:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-19 04:09:26,629 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-19 04:09:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:26,629 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-19 04:09:26,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:09:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-19 04:09:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:09:26,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:26,632 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] [2020-08-19 04:09:26,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:09:26,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:26,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2059632594, now seen corresponding path program 1 times [2020-08-19 04:09:26,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:26,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137641010] [2020-08-19 04:09:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:26,934 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:27,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:27,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:27,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:09:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:27,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:09:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:27,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137641010] [2020-08-19 04:09:27,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:27,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:09:27,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353465017] [2020-08-19 04:09:27,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:09:27,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:27,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:09:27,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:09:27,064 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-19 04:09:27,479 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:27,769 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:28,018 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:28,254 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:29,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:29,375 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-19 04:09:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 04:09:29,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 04:09:29,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:29,378 INFO L225 Difference]: With dead ends: 239 [2020-08-19 04:09:29,379 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 04:09:29,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:09:29,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 04:09:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-19 04:09:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 04:09:29,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-19 04:09:29,430 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-19 04:09:29,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:29,431 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-19 04:09:29,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:09:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-19 04:09:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 04:09:29,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:29,433 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] [2020-08-19 04:09:29,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:09:29,433 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:29,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1182566725, now seen corresponding path program 1 times [2020-08-19 04:09:29,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:29,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517533849] [2020-08-19 04:09:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,715 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:09:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:09:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 04:09:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:29,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517533849] [2020-08-19 04:09:29,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:29,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:09:29,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735927238] [2020-08-19 04:09:29,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:09:29,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:29,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:09:29,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:09:29,887 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-19 04:09:30,223 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:31,345 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:31,998 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-19 04:09:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:09:31,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-19 04:09:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:32,001 INFO L225 Difference]: With dead ends: 331 [2020-08-19 04:09:32,001 INFO L226 Difference]: Without dead ends: 236 [2020-08-19 04:09:32,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:09:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-19 04:09:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-19 04:09:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-19 04:09:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-19 04:09:32,048 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-19 04:09:32,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:32,048 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-19 04:09:32,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:09:32,049 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-19 04:09:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 04:09:32,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:32,050 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] [2020-08-19 04:09:32,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:09:32,051 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:32,051 INFO L82 PathProgramCache]: Analyzing trace with hash 590157777, now seen corresponding path program 1 times [2020-08-19 04:09:32,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:32,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217677926] [2020-08-19 04:09:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,391 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 04:09:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 04:09:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 04:09:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:32,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217677926] [2020-08-19 04:09:32,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:32,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:09:32,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064256412] [2020-08-19 04:09:32,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:09:32,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:32,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:09:32,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:09:32,520 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 8 states. [2020-08-19 04:09:32,857 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:33,932 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:34,180 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:34,406 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:34,622 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:34,895 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:35,918 INFO L93 Difference]: Finished difference Result 580 states and 716 transitions. [2020-08-19 04:09:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:09:35,920 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-08-19 04:09:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:35,925 INFO L225 Difference]: With dead ends: 580 [2020-08-19 04:09:35,925 INFO L226 Difference]: Without dead ends: 409 [2020-08-19 04:09:35,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 04:09:35,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-08-19 04:09:35,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 345. [2020-08-19 04:09:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-19 04:09:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2020-08-19 04:09:36,000 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 78 [2020-08-19 04:09:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:36,001 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2020-08-19 04:09:36,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:09:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2020-08-19 04:09:36,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 04:09:36,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:36,003 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] [2020-08-19 04:09:36,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:09:36,004 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:36,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1032148237, now seen corresponding path program 1 times [2020-08-19 04:09:36,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:36,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270982091] [2020-08-19 04:09:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,291 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 04:09:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 04:09:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:36,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270982091] [2020-08-19 04:09:36,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:36,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:09:36,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279580939] [2020-08-19 04:09:36,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:09:36,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:36,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:09:36,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:09:36,404 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand 9 states. [2020-08-19 04:09:36,771 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:37,777 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:37,984 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:38,244 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:38,502 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:38,733 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:39,694 INFO L93 Difference]: Finished difference Result 448 states and 562 transitions. [2020-08-19 04:09:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 04:09:39,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-08-19 04:09:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:39,699 INFO L225 Difference]: With dead ends: 448 [2020-08-19 04:09:39,700 INFO L226 Difference]: Without dead ends: 445 [2020-08-19 04:09:39,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:09:39,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-08-19 04:09:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 345. [2020-08-19 04:09:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-08-19 04:09:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 393 transitions. [2020-08-19 04:09:39,777 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 393 transitions. Word has length 82 [2020-08-19 04:09:39,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:39,778 INFO L479 AbstractCegarLoop]: Abstraction has 345 states and 393 transitions. [2020-08-19 04:09:39,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:09:39,778 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 393 transitions. [2020-08-19 04:09:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:09:39,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:39,780 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] [2020-08-19 04:09:39,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:09:39,781 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:39,781 INFO L82 PathProgramCache]: Analyzing trace with hash 2065507240, now seen corresponding path program 1 times [2020-08-19 04:09:39,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:39,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116524146] [2020-08-19 04:09:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,059 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:09:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:09:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:40,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116524146] [2020-08-19 04:09:40,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:40,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:09:40,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654320322] [2020-08-19 04:09:40,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:09:40,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:40,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:09:40,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:09:40,208 INFO L87 Difference]: Start difference. First operand 345 states and 393 transitions. Second operand 9 states. [2020-08-19 04:09:41,539 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 04:09:41,772 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:09:42,003 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:42,228 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:43,191 INFO L93 Difference]: Finished difference Result 770 states and 946 transitions. [2020-08-19 04:09:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 04:09:43,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 04:09:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:43,195 INFO L225 Difference]: With dead ends: 770 [2020-08-19 04:09:43,197 INFO L226 Difference]: Without dead ends: 449 [2020-08-19 04:09:43,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:09:43,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-08-19 04:09:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 355. [2020-08-19 04:09:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-08-19 04:09:43,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 403 transitions. [2020-08-19 04:09:43,266 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 403 transitions. Word has length 83 [2020-08-19 04:09:43,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:43,267 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 403 transitions. [2020-08-19 04:09:43,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:09:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 403 transitions. [2020-08-19 04:09:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:09:43,269 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:43,269 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] [2020-08-19 04:09:43,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:09:43,269 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:43,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:43,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2088139494, now seen corresponding path program 1 times [2020-08-19 04:09:43,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:43,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983832206] [2020-08-19 04:09:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,541 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:43,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:09:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:09:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:43,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983832206] [2020-08-19 04:09:43,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:43,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 04:09:43,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396571223] [2020-08-19 04:09:43,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 04:09:43,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:43,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 04:09:43,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 04:09:43,711 INFO L87 Difference]: Start difference. First operand 355 states and 403 transitions. Second operand 11 states. [2020-08-19 04:09:44,386 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:44,645 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:44,862 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:45,417 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:45,658 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:45,891 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:09:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:47,002 INFO L93 Difference]: Finished difference Result 794 states and 986 transitions. [2020-08-19 04:09:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 04:09:47,003 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-19 04:09:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:47,007 INFO L225 Difference]: With dead ends: 794 [2020-08-19 04:09:47,007 INFO L226 Difference]: Without dead ends: 463 [2020-08-19 04:09:47,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:09:47,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-08-19 04:09:47,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 363. [2020-08-19 04:09:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-08-19 04:09:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 411 transitions. [2020-08-19 04:09:47,076 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 411 transitions. Word has length 83 [2020-08-19 04:09:47,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:47,077 INFO L479 AbstractCegarLoop]: Abstraction has 363 states and 411 transitions. [2020-08-19 04:09:47,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 04:09:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 411 transitions. [2020-08-19 04:09:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 04:09:47,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:47,079 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] [2020-08-19 04:09:47,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:09:47,079 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:47,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:47,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1181335803, now seen corresponding path program 1 times [2020-08-19 04:09:47,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:47,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221969988] [2020-08-19 04:09:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,359 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 04:09:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:09:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:09:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:09:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:09:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:09:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 04:09:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:09:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:09:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:09:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:09:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 04:09:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 04:09:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:09:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:09:47,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221969988] [2020-08-19 04:09:47,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:09:47,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:09:47,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846455450] [2020-08-19 04:09:47,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:09:47,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:09:47,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:09:47,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:09:47,556 INFO L87 Difference]: Start difference. First operand 363 states and 411 transitions. Second operand 7 states. [2020-08-19 04:09:48,101 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:48,814 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 04:09:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:09:50,944 INFO L93 Difference]: Finished difference Result 1097 states and 1408 transitions. [2020-08-19 04:09:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 04:09:50,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-19 04:09:50,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:09:50,951 INFO L225 Difference]: With dead ends: 1097 [2020-08-19 04:09:50,952 INFO L226 Difference]: Without dead ends: 758 [2020-08-19 04:09:50,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:09:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-08-19 04:09:51,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 659. [2020-08-19 04:09:51,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-08-19 04:09:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 781 transitions. [2020-08-19 04:09:51,094 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 781 transitions. Word has length 83 [2020-08-19 04:09:51,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:09:51,095 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 781 transitions. [2020-08-19 04:09:51,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:09:51,095 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 781 transitions. [2020-08-19 04:09:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 04:09:51,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:09:51,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:09:51,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:09:51,102 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:09:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:09:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash -765720469, now seen corresponding path program 1 times [2020-08-19 04:09:51,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:09:51,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262512490] [2020-08-19 04:09:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:09:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:09:51,165 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:09:51,165 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:09:51,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:09:51,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:09:51 BoogieIcfgContainer [2020-08-19 04:09:51,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:09:51,220 INFO L168 Benchmark]: Toolchain (without parser) took 30584.74 ms. Allocated memory was 136.8 MB in the beginning and 604.5 MB in the end (delta: 467.7 MB). Free memory was 98.8 MB in the beginning and 111.1 MB in the end (delta: -12.2 MB). Peak memory consumption was 455.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:51,222 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:09:51,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.66 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 167.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:51,230 INFO L168 Benchmark]: Boogie Preprocessor took 92.93 ms. Allocated memory is still 200.3 MB. Free memory was 167.3 MB in the beginning and 162.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:51,232 INFO L168 Benchmark]: RCFGBuilder took 1087.20 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 162.8 MB in the beginning and 192.1 MB in the end (delta: -29.2 MB). Peak memory consumption was 87.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:51,232 INFO L168 Benchmark]: TraceAbstraction took 28762.00 ms. Allocated memory was 228.6 MB in the beginning and 604.5 MB in the end (delta: 375.9 MB). Free memory was 192.1 MB in the beginning and 111.1 MB in the end (delta: 81.0 MB). Peak memory consumption was 456.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:09:51,240 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.66 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 167.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.93 ms. Allocated memory is still 200.3 MB. Free memory was 167.3 MB in the beginning and 162.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1087.20 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 162.8 MB in the beginning and 192.1 MB in the end (delta: -29.2 MB). Peak memory consumption was 87.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28762.00 ms. Allocated memory was 228.6 MB in the beginning and 604.5 MB in the end (delta: 375.9 MB). Free memory was 192.1 MB in the beginning and 111.1 MB in the end (delta: 81.0 MB). Peak memory consumption was 456.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 [L752] COND TRUE 1 [L754] COND TRUE splverifierCounter < 4 [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) [L764] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L764] RET waterRise() [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) [L774] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L774] RET changeMethaneLevel() [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) [L795] CALL timeShift() [L552] COND FALSE !(\read(pumpRunning)) [L559] COND TRUE \read(systemActive) [L561] CALL processEnvironment() [L607] int tmp ; [L610] COND FALSE !(\read(pumpRunning)) [L625] CALL processEnvironment__wrappee__highWaterSensor() [L581] int tmp ; [L584] COND TRUE ! pumpRunning [L586] CALL, EXPR isHighWaterLevel() [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; [L710] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L710] RET, EXPR isHighWaterSensorDry() [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); [L586] RET, EXPR isHighWaterLevel() [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) [L590] CALL activatePump() [L635] pumpRunning = 1 [L590] RET activatePump() [L625] RET processEnvironment__wrappee__highWaterSensor() [L561] RET processEnvironment() [L567] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L950] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 23.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1044 SDtfs, 1701 SDslu, 956 SDs, 0 SdLazy, 4836 SolverSat, 1010 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=659occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 580 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 608 ConstructedInterpolants, 0 QuantifiedInterpolants, 186785 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...