/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:40:18,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:40:18,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:40:18,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:40:18,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:40:18,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:40:18,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:40:18,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:40:18,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:40:18,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:40:18,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:40:18,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:40:18,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:40:18,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:40:18,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:40:18,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:40:18,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:40:18,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:40:18,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:40:18,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:40:18,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:40:18,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:40:18,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:40:18,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:40:18,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:40:18,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:40:18,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:40:18,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:40:18,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:40:18,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:40:18,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:40:18,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:40:18,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:40:18,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:40:18,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:40:18,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:40:18,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:40:18,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:40:18,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:40:18,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:40:18,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:40:18,396 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 [2020-08-22 03:40:18,447 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:40:18,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:40:18,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:40:18,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:40:18,449 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:40:18,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:40:18,449 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:40:18,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:40:18,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:40:18,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:40:18,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:40:18,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:40:18,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:40:18,451 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:40:18,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:40:18,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:40:18,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:40:18,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:40:18,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:40:18,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:40:18,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:40:18,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:40:18,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:40:18,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:40:18,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:40:18,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:40:18,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:40:18,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:40:18,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:40:18,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:40:18,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:40:18,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:40:18,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:40:18,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:40:18,813 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:40:18,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-22 03:40:18,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/104e36c6c/9f882f72ee714123b61f39812c308f60/FLAGc0b1271eb [2020-08-22 03:40:19,397 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:40:19,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-22 03:40:19,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/104e36c6c/9f882f72ee714123b61f39812c308f60/FLAGc0b1271eb [2020-08-22 03:40:19,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/104e36c6c/9f882f72ee714123b61f39812c308f60 [2020-08-22 03:40:19,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:40:19,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:40:19,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:40:19,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:40:19,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:40:19,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:40:19" (1/1) ... [2020-08-22 03:40:19,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@265a33a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:19, skipping insertion in model container [2020-08-22 03:40:19,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:40:19" (1/1) ... [2020-08-22 03:40:19,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:40:19,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:40:20,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:40:20,072 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:40:20,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:40:20,348 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:40:20,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20 WrapperNode [2020-08-22 03:40:20,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:40:20,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:40:20,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:40:20,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:40:20,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (1/1) ... [2020-08-22 03:40:20,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (1/1) ... [2020-08-22 03:40:20,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (1/1) ... [2020-08-22 03:40:20,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (1/1) ... [2020-08-22 03:40:20,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (1/1) ... [2020-08-22 03:40:20,421 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (1/1) ... [2020-08-22 03:40:20,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (1/1) ... [2020-08-22 03:40:20,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:40:20,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:40:20,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:40:20,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:40:20,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (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 [2020-08-22 03:40:20,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:40:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:40:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:40:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:40:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:40:20,498 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:40:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:40:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:40:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:40:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:40:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:40:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:40:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:40:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:40:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:40:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:40:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 03:40:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:40:20,500 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:40:20,501 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:40:20,501 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:40:20,501 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:40:20,501 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:40:20,501 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:40:20,501 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:40:20,501 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:40:20,502 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:40:20,502 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:40:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:40:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:40:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:40:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:40:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:40:20,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:40:20,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:40:20,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 03:40:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:40:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:40:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:40:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:40:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:40:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:40:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:40:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:40:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:40:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:40:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:40:20,505 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:40:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:40:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:40:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:40:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:40:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 03:40:20,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 03:40:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:40:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:40:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:40:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:40:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:40:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:40:20,507 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:40:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:40:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:40:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:40:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:40:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:40:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:40:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:40:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:40:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:40:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:40:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:40:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:40:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:40:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:40:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:40:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:40:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:40:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:40:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:40:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:40:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:40:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:40:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:40:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:40:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:40:21,660 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:40:21,661 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:40:21,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:40:21 BoogieIcfgContainer [2020-08-22 03:40:21,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:40:21,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:40:21,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:40:21,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:40:21,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:40:19" (1/3) ... [2020-08-22 03:40:21,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428e6bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:40:21, skipping insertion in model container [2020-08-22 03:40:21,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:40:20" (2/3) ... [2020-08-22 03:40:21,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428e6bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:40:21, skipping insertion in model container [2020-08-22 03:40:21,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:40:21" (3/3) ... [2020-08-22 03:40:21,675 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2020-08-22 03:40:21,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:40:21,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:40:21,706 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:40:21,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:40:21,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:40:21,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:40:21,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:40:21,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:40:21,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:40:21,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:40:21,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:40:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-08-22 03:40:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 03:40:21,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:21,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:21,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:21,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:21,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1057158692, now seen corresponding path program 1 times [2020-08-22 03:40:21,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:21,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031686880] [2020-08-22 03:40:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,391 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:40:22,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:40:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:40:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:40:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:22,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031686880] [2020-08-22 03:40:22,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:22,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:40:22,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753310130] [2020-08-22 03:40:22,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:40:22,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:22,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:40:22,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:40:22,517 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-08-22 03:40:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:23,648 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-22 03:40:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:40:23,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 03:40:23,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:23,673 INFO L225 Difference]: With dead ends: 258 [2020-08-22 03:40:23,673 INFO L226 Difference]: Without dead ends: 140 [2020-08-22 03:40:23,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:40:23,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-22 03:40:23,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-22 03:40:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-22 03:40:23,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-22 03:40:23,764 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52 [2020-08-22 03:40:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:23,765 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-22 03:40:23,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:40:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-22 03:40:23,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 03:40:23,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:23,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:23,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:40:23,770 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:23,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1710283751, now seen corresponding path program 1 times [2020-08-22 03:40:23,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:23,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762300168] [2020-08-22 03:40:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,161 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:40:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:40:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:40:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:40:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:24,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762300168] [2020-08-22 03:40:24,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:24,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:40:24,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905396731] [2020-08-22 03:40:24,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:40:24,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:24,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:40:24,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:40:24,259 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-22 03:40:24,697 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:40:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:25,382 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-22 03:40:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:40:25,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 03:40:25,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:25,385 INFO L225 Difference]: With dead ends: 187 [2020-08-22 03:40:25,385 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 03:40:25,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:40:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 03:40:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 03:40:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 03:40:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-22 03:40:25,432 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53 [2020-08-22 03:40:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:25,432 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-22 03:40:25,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:40:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-22 03:40:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 03:40:25,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:25,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:25,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:40:25,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:25,440 INFO L82 PathProgramCache]: Analyzing trace with hash -830709307, now seen corresponding path program 1 times [2020-08-22 03:40:25,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:25,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177393343] [2020-08-22 03:40:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,827 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:40:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:40:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:40:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 03:40:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:25,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177393343] [2020-08-22 03:40:25,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:25,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:40:25,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122631851] [2020-08-22 03:40:25,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:40:25,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:25,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:40:25,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:40:25,952 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-22 03:40:26,349 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:40:26,663 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:40:26,944 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:40:27,192 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:40:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:28,185 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-22 03:40:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 03:40:28,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 03:40:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:28,188 INFO L225 Difference]: With dead ends: 200 [2020-08-22 03:40:28,188 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 03:40:28,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:40:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 03:40:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 03:40:28,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 03:40:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-22 03:40:28,219 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58 [2020-08-22 03:40:28,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:28,220 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-22 03:40:28,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:40:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-22 03:40:28,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 03:40:28,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:28,222 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] [2020-08-22 03:40:28,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:40:28,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:28,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:28,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1834721556, now seen corresponding path program 1 times [2020-08-22 03:40:28,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:28,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614546147] [2020-08-22 03:40:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,545 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:40:28,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:40:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 03:40:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 03:40:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 03:40:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:28,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614546147] [2020-08-22 03:40:28,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:28,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:40:28,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574722499] [2020-08-22 03:40:28,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:40:28,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:28,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:40:28,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:40:28,659 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-08-22 03:40:29,079 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:40:30,468 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:40:30,775 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:40:31,014 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:40:31,429 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:40:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:31,729 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-08-22 03:40:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:40:31,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-22 03:40:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:31,734 INFO L225 Difference]: With dead ends: 299 [2020-08-22 03:40:31,735 INFO L226 Difference]: Without dead ends: 223 [2020-08-22 03:40:31,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:40:31,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-22 03:40:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2020-08-22 03:40:31,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-22 03:40:31,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-08-22 03:40:31,789 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66 [2020-08-22 03:40:31,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:31,789 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-08-22 03:40:31,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:40:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-08-22 03:40:31,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 03:40:31,792 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:31,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:40:31,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:40:31,793 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:31,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:31,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1027907532, now seen corresponding path program 1 times [2020-08-22 03:40:31,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:31,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662530143] [2020-08-22 03:40:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,045 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:40:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:40:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:40:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:40:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:40:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:40:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:40:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:40:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:40:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:40:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-22 03:40:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 03:40:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:40:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:40:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:40:32,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662530143] [2020-08-22 03:40:32,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:40:32,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:40:32,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568386532] [2020-08-22 03:40:32,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:40:32,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:40:32,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:40:32,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:40:32,162 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-08-22 03:40:32,520 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:40:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:40:33,070 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2020-08-22 03:40:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 03:40:33,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-08-22 03:40:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:40:33,073 INFO L225 Difference]: With dead ends: 296 [2020-08-22 03:40:33,073 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 03:40:33,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:40:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 03:40:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-22 03:40:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 03:40:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-22 03:40:33,105 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 74 [2020-08-22 03:40:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:40:33,106 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-22 03:40:33,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:40:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-22 03:40:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 03:40:33,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:40:33,107 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] [2020-08-22 03:40:33,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:40:33,108 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:40:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:40:33,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1882239654, now seen corresponding path program 1 times [2020-08-22 03:40:33,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:40:33,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820582727] [2020-08-22 03:40:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:40:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:40:33,185 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:40:33,185 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:40:33,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:40:33,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:40:33 BoogieIcfgContainer [2020-08-22 03:40:33,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:40:33,225 INFO L168 Benchmark]: Toolchain (without parser) took 13537.13 ms. Allocated memory was 141.0 MB in the beginning and 431.0 MB in the end (delta: 289.9 MB). Free memory was 102.9 MB in the beginning and 229.8 MB in the end (delta: -126.8 MB). Peak memory consumption was 163.1 MB. Max. memory is 7.1 GB. [2020-08-22 03:40:33,226 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 03:40:33,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.45 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 175.7 MB in the end (delta: -73.0 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-22 03:40:33,228 INFO L168 Benchmark]: Boogie Preprocessor took 84.34 ms. Allocated memory is still 205.0 MB. Free memory was 175.7 MB in the beginning and 171.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:40:33,229 INFO L168 Benchmark]: RCFGBuilder took 1231.57 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 171.1 MB in the beginning and 199.7 MB in the end (delta: -28.7 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:40:33,229 INFO L168 Benchmark]: TraceAbstraction took 11555.71 ms. Allocated memory was 234.4 MB in the beginning and 431.0 MB in the end (delta: 196.6 MB). Free memory was 198.3 MB in the beginning and 229.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. [2020-08-22 03:40:33,233 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.45 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 175.7 MB in the end (delta: -73.0 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.34 ms. Allocated memory is still 205.0 MB. Free memory was 175.7 MB in the beginning and 171.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1231.57 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 171.1 MB in the beginning and 199.7 MB in the end (delta: -28.7 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11555.71 ms. Allocated memory was 234.4 MB in the beginning and 431.0 MB in the end (delta: 196.6 MB). Free memory was 198.3 MB in the beginning and 229.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L96] int pumpRunning = 0; [L97] int systemActive = 1; [L309] int waterLevel = 1; [L310] int methaneLevelCritical = 0; [L389] int cleanupTimeShifts = 4; [L654] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L462] int retValue_acc ; [L463] int tmp ; [L467] FCALL select_helpers() [L468] FCALL select_features() [L469] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L469] RET, EXPR valid_product() [L469] tmp = valid_product() [L471] COND TRUE \read(tmp) [L473] FCALL setup() [L474] CALL runTest() [L456] CALL test() [L242] int splverifierCounter ; [L243] int tmp ; [L244] int tmp___0 ; [L245] int tmp___1 ; [L246] int tmp___2 ; [L249] splverifierCounter = 0 [L251] COND TRUE 1 [L253] COND TRUE splverifierCounter < 4 [L259] tmp = __VERIFIER_nondet_int() [L261] COND TRUE \read(tmp) [L263] CALL waterRise() [L327] COND TRUE waterLevel < 2 [L328] waterLevel = waterLevel + 1 [L263] RET waterRise() [L269] tmp___0 = __VERIFIER_nondet_int() [L271] COND FALSE !(\read(tmp___0)) [L279] tmp___2 = __VERIFIER_nondet_int() [L281] COND FALSE !(\read(tmp___2)) [L287] tmp___1 = __VERIFIER_nondet_int() [L289] COND TRUE \read(tmp___1) [L296] CALL timeShift() [L104] COND FALSE !(\read(pumpRunning)) [L111] COND TRUE \read(systemActive) [L113] CALL processEnvironment() [L133] int tmp ; [L136] COND FALSE !(\read(pumpRunning)) [L151] FCALL processEnvironment__wrappee__base() [L113] RET processEnvironment() [L119] CALL __utac_acc__Specification3_spec__1() [L852] int tmp ; [L853] int tmp___0 ; [L854] int tmp___1 ; [L858] CALL, EXPR isMethaneLevelCritical() [L348] int retValue_acc ; [L351] retValue_acc = methaneLevelCritical [L352] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND FALSE !(\read(tmp)) [L864] CALL, EXPR getWaterLevel() [L380] int retValue_acc ; [L383] retValue_acc = waterLevel [L384] return (retValue_acc); [L864] RET, EXPR getWaterLevel() [L864] tmp___0 = getWaterLevel() [L866] COND TRUE tmp___0 == 2 [L868] CALL, EXPR isPumpRunning() [L185] int retValue_acc ; [L188] retValue_acc = pumpRunning [L189] return (retValue_acc); [L868] RET, EXPR isPumpRunning() [L868] tmp___1 = isPumpRunning() [L870] COND FALSE !(\read(tmp___1)) [L874] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 444 SDtfs, 658 SDslu, 237 SDs, 0 SdLazy, 1339 SolverSat, 452 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 85738 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...