/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=WIDEST --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_product01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:59:45,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:59:45,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:59:45,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:59:45,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:59:45,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:59:45,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:59:45,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:59:45,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:59:45,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:59:45,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:59:45,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:59:45,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:59:45,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:59:45,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:59:45,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:59:45,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:59:45,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:59:45,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:59:45,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:59:45,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:59:45,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:59:45,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:59:45,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:59:45,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:59:45,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:59:45,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:59:45,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:59:45,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:59:45,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:59:45,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:59:45,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:59:45,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:59:45,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:59:45,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:59:45,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:59:45,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:59:45,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:59:45,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:59:45,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:59:45,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:59:45,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 21:59:45,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:59:45,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:59:45,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:59:45,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:59:45,461 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:59:45,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:59:45,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:59:45,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:59:45,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:59:45,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:59:45,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:59:45,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:59:45,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:59:45,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:59:45,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:59:45,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:59:45,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:59:45,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:59:45,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:59:45,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:59:45,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:59:45,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:59:45,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:59:45,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:59:45,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:59:45,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:59:45,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:59:45,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:59:45,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:59:45,467 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 21:59:45,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:59:45,779 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:59:45,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:59:45,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:59:45,793 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:59:45,796 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-08-21 21:59:45,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61fa61877/059e756aaa21456cbaf2d78c74c10418/FLAG9f60b19f8 [2020-08-21 21:59:46,405 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:59:46,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product01.cil.c [2020-08-21 21:59:46,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61fa61877/059e756aaa21456cbaf2d78c74c10418/FLAG9f60b19f8 [2020-08-21 21:59:46,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61fa61877/059e756aaa21456cbaf2d78c74c10418 [2020-08-21 21:59:46,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:59:46,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:59:46,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:59:46,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:59:46,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:59:46,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:59:46" (1/1) ... [2020-08-21 21:59:46,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1a5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:46, skipping insertion in model container [2020-08-21 21:59:46,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:59:46" (1/1) ... [2020-08-21 21:59:46,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:59:46,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:59:47,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:59:47,161 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:59:47,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:59:47,303 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:59:47,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47 WrapperNode [2020-08-21 21:59:47,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:59:47,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:59:47,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:59:47,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:59:47,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (1/1) ... [2020-08-21 21:59:47,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (1/1) ... [2020-08-21 21:59:47,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (1/1) ... [2020-08-21 21:59:47,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (1/1) ... [2020-08-21 21:59:47,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (1/1) ... [2020-08-21 21:59:47,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (1/1) ... [2020-08-21 21:59:47,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (1/1) ... [2020-08-21 21:59:47,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:59:47,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:59:47,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:59:47,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:59:47,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:59:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:59:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:59:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 21:59:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 21:59:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 21:59:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 21:59:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 21:59:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 21:59:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 21:59:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 21:59:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 21:59:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 21:59:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 21:59:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 21:59:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 21:59:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:59:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 21:59:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 21:59:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 21:59:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 21:59:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 21:59:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:59:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 21:59:47,465 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 21:59:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 21:59:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 21:59:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 21:59:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 21:59:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 21:59:47,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 21:59:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 21:59:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 21:59:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 21:59:47,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 21:59:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:59:47,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:59:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 21:59:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 21:59:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 21:59:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 21:59:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 21:59:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 21:59:47,468 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 21:59:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 21:59:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 21:59:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 21:59:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 21:59:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 21:59:47,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:59:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 21:59:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 21:59:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 21:59:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 21:59:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 21:59:47,470 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 21:59:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 21:59:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 21:59:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 21:59:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 21:59:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 21:59:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 21:59:47,471 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 21:59:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:59:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 21:59:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:59:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:59:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 21:59:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:59:47,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:59:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:59:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:59:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 21:59:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:59:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 21:59:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 21:59:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:59:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 21:59:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 21:59:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 21:59:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:59:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:59:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:59:48,631 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:59:48,631 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 21:59:48,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:59:48 BoogieIcfgContainer [2020-08-21 21:59:48,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:59:48,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:59:48,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:59:48,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:59:48,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:59:46" (1/3) ... [2020-08-21 21:59:48,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d1b544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:59:48, skipping insertion in model container [2020-08-21 21:59:48,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:59:47" (2/3) ... [2020-08-21 21:59:48,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d1b544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:59:48, skipping insertion in model container [2020-08-21 21:59:48,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:59:48" (3/3) ... [2020-08-21 21:59:48,645 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product01.cil.c [2020-08-21 21:59:48,655 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:59:48,663 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:59:48,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:59:48,703 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:59:48,703 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:59:48,703 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:59:48,703 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:59:48,704 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:59:48,704 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:59:48,704 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:59:48,704 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:59:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states. [2020-08-21 21:59:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:59:48,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:48,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:48,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:48,741 INFO L82 PathProgramCache]: Analyzing trace with hash -438635737, now seen corresponding path program 1 times [2020-08-21 21:59:48,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:48,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830135166] [2020-08-21 21:59:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,387 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:59:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 21:59:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 21:59:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:49,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830135166] [2020-08-21 21:59:49,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:49,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 21:59:49,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456876940] [2020-08-21 21:59:49,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 21:59:49,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 21:59:49,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:59:49,561 INFO L87 Difference]: Start difference. First operand 133 states. Second operand 3 states. [2020-08-21 21:59:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:50,510 INFO L93 Difference]: Finished difference Result 211 states and 284 transitions. [2020-08-21 21:59:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 21:59:50,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 21:59:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:50,527 INFO L225 Difference]: With dead ends: 211 [2020-08-21 21:59:50,527 INFO L226 Difference]: Without dead ends: 115 [2020-08-21 21:59:50,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 21:59:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-21 21:59:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2020-08-21 21:59:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-21 21:59:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2020-08-21 21:59:50,625 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 52 [2020-08-21 21:59:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:50,626 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2020-08-21 21:59:50,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 21:59:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2020-08-21 21:59:50,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 21:59:50,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:50,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:50,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:59:50,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:50,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:50,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1274777231, now seen corresponding path program 1 times [2020-08-21 21:59:50,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:50,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734090034] [2020-08-21 21:59:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:50,958 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:59:50,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:50,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 21:59:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:50,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:59:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 21:59:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:51,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734090034] [2020-08-21 21:59:51,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:51,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:59:51,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370316093] [2020-08-21 21:59:51,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:59:51,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:51,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:59:51,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:59:51,007 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand 4 states. [2020-08-21 21:59:51,417 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:59:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:51,875 INFO L93 Difference]: Finished difference Result 144 states and 175 transitions. [2020-08-21 21:59:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:59:51,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 21:59:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:51,879 INFO L225 Difference]: With dead ends: 144 [2020-08-21 21:59:51,879 INFO L226 Difference]: Without dead ends: 99 [2020-08-21 21:59:51,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:59:51,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-21 21:59:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-21 21:59:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-21 21:59:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-21 21:59:51,915 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 53 [2020-08-21 21:59:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:51,916 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-21 21:59:51,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:59:51,916 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-21 21:59:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 21:59:51,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:51,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:51,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:59:51,919 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:51,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1377435257, now seen corresponding path program 1 times [2020-08-21 21:59:51,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:51,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900559351] [2020-08-21 21:59:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,266 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:59:52,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 21:59:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 21:59:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 21:59:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:52,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900559351] [2020-08-21 21:59:52,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:52,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:59:52,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388814100] [2020-08-21 21:59:52,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:59:52,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:52,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:59:52,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:59:52,355 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-21 21:59:52,652 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:59:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:53,164 INFO L93 Difference]: Finished difference Result 153 states and 189 transitions. [2020-08-21 21:59:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 21:59:53,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-08-21 21:59:53,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:53,170 INFO L225 Difference]: With dead ends: 153 [2020-08-21 21:59:53,171 INFO L226 Difference]: Without dead ends: 99 [2020-08-21 21:59:53,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:59:53,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-21 21:59:53,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-21 21:59:53,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-21 21:59:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-08-21 21:59:53,209 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 57 [2020-08-21 21:59:53,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:53,210 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-08-21 21:59:53,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:59:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-08-21 21:59:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 21:59:53,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:53,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:59:53,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:59:53,225 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:53,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1699431063, now seen corresponding path program 1 times [2020-08-21 21:59:53,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:53,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245037120] [2020-08-21 21:59:53,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,551 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:59:53,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 21:59:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 21:59:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 21:59:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 21:59:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:53,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245037120] [2020-08-21 21:59:53,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:53,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:59:53,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952272212] [2020-08-21 21:59:53,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:59:53,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:53,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:59:53,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:59:53,640 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 7 states. [2020-08-21 21:59:54,007 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:59:54,817 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:59:55,099 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:59:55,331 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 21:59:55,572 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:59:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:55,798 INFO L93 Difference]: Finished difference Result 196 states and 245 transitions. [2020-08-21 21:59:55,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:59:55,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-08-21 21:59:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:55,802 INFO L225 Difference]: With dead ends: 196 [2020-08-21 21:59:55,803 INFO L226 Difference]: Without dead ends: 142 [2020-08-21 21:59:55,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-21 21:59:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-21 21:59:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 128. [2020-08-21 21:59:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 21:59:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-21 21:59:55,843 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 60 [2020-08-21 21:59:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:55,843 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-21 21:59:55,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:59:55,844 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-21 21:59:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 21:59:55,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:55,846 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] [2020-08-21 21:59:55,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:59:55,847 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:55,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1843670287, now seen corresponding path program 1 times [2020-08-21 21:59:55,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:55,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040341020] [2020-08-21 21:59:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,127 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 21:59:56,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:59:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:59:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:59:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:59:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:59:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 21:59:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:59:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 21:59:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 21:59:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 21:59:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:59:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 21:59:56,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040341020] [2020-08-21 21:59:56,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:59:56,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:59:56,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011799932] [2020-08-21 21:59:56,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:59:56,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:59:56,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:59:56,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:59:56,214 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 5 states. [2020-08-21 21:59:56,492 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 21:59:56,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:59:56,946 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2020-08-21 21:59:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 21:59:56,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-08-21 21:59:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:59:56,948 INFO L225 Difference]: With dead ends: 192 [2020-08-21 21:59:56,949 INFO L226 Difference]: Without dead ends: 127 [2020-08-21 21:59:56,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:59:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-21 21:59:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2020-08-21 21:59:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-21 21:59:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-08-21 21:59:56,977 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 64 [2020-08-21 21:59:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:59:56,977 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-08-21 21:59:56,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:59:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-08-21 21:59:56,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 21:59:56,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:59:56,979 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] [2020-08-21 21:59:56,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:59:56,979 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:59:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:59:56,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2045663983, now seen corresponding path program 1 times [2020-08-21 21:59:56,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:59:56,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83243974] [2020-08-21 21:59:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:59:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 21:59:57,079 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 21:59:57,079 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 21:59:57,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:59:57,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 09:59:57 BoogieIcfgContainer [2020-08-21 21:59:57,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 21:59:57,119 INFO L168 Benchmark]: Toolchain (without parser) took 10419.74 ms. Allocated memory was 139.5 MB in the beginning and 425.2 MB in the end (delta: 285.7 MB). Free memory was 101.6 MB in the beginning and 379.5 MB in the end (delta: -277.9 MB). Peak memory consumption was 249.2 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:57,121 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 21:59:57,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.50 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 172.7 MB in the end (delta: -71.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:57,127 INFO L168 Benchmark]: Boogie Preprocessor took 87.55 ms. Allocated memory is still 202.9 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:57,128 INFO L168 Benchmark]: RCFGBuilder took 1244.67 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 204.0 MB in the end (delta: -35.4 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:57,129 INFO L168 Benchmark]: TraceAbstraction took 8478.03 ms. Allocated memory was 235.9 MB in the beginning and 425.2 MB in the end (delta: 189.3 MB). Free memory was 204.0 MB in the beginning and 379.5 MB in the end (delta: -175.5 MB). Peak memory consumption was 255.1 MB. Max. memory is 7.1 GB. [2020-08-21 21:59:57,141 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 604.50 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.4 MB in the beginning and 172.7 MB in the end (delta: -71.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.55 ms. Allocated memory is still 202.9 MB. Free memory was 172.7 MB in the beginning and 168.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1244.67 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 168.6 MB in the beginning and 204.0 MB in the end (delta: -35.4 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8478.03 ms. Allocated memory was 235.9 MB in the beginning and 425.2 MB in the end (delta: 189.3 MB). Free memory was 204.0 MB in the beginning and 379.5 MB in the end (delta: -175.5 MB). Peak memory consumption was 255.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 302]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int pumpRunning = 0; [L49] int systemActive = 1; [L307] int cleanupTimeShifts = 4; [L403] int waterLevel = 1; [L404] int methaneLevelCritical = 0; [L652] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L380] int retValue_acc ; [L381] int tmp ; [L385] FCALL select_helpers() [L386] FCALL select_features() [L387] CALL, EXPR valid_product() [L253] int retValue_acc ; [L256] retValue_acc = 1 [L257] return (retValue_acc); [L387] RET, EXPR valid_product() [L387] tmp = valid_product() [L389] COND TRUE \read(tmp) [L391] FCALL setup() [L392] CALL runTest() [L374] CALL test() [L160] int splverifierCounter ; [L161] int tmp ; [L162] int tmp___0 ; [L163] int tmp___1 ; [L164] int tmp___2 ; [L167] splverifierCounter = 0 [L169] COND TRUE 1 [L171] COND TRUE splverifierCounter < 4 [L177] tmp = __VERIFIER_nondet_int() [L179] COND TRUE \read(tmp) [L181] CALL waterRise() [L421] COND TRUE waterLevel < 2 [L422] waterLevel = waterLevel + 1 [L181] RET waterRise() [L187] tmp___0 = __VERIFIER_nondet_int() [L189] COND FALSE !(\read(tmp___0)) [L197] tmp___2 = __VERIFIER_nondet_int() [L199] COND TRUE \read(tmp___2) [L212] CALL timeShift() [L56] COND FALSE !(\read(pumpRunning)) [L63] COND TRUE \read(systemActive) [L65] FCALL processEnvironment() [L71] CALL __utac_acc__Specification3_spec__1() [L265] int tmp ; [L266] int tmp___0 ; [L267] int tmp___1 ; [L271] CALL, EXPR isMethaneLevelCritical() [L442] int retValue_acc ; [L445] retValue_acc = methaneLevelCritical [L446] return (retValue_acc); [L271] RET, EXPR isMethaneLevelCritical() [L271] tmp = isMethaneLevelCritical() [L273] COND FALSE !(\read(tmp)) [L277] CALL, EXPR getWaterLevel() [L474] int retValue_acc ; [L477] retValue_acc = waterLevel [L478] return (retValue_acc); [L277] RET, EXPR getWaterLevel() [L277] tmp___0 = getWaterLevel() [L279] COND TRUE tmp___0 == 2 [L281] CALL, EXPR isPumpRunning() [L111] int retValue_acc ; [L114] retValue_acc = pumpRunning [L115] return (retValue_acc); [L281] RET, EXPR isPumpRunning() [L281] tmp___1 = isPumpRunning() [L283] COND FALSE !(\read(tmp___1)) [L287] CALL __automaton_fail() [L302] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 34 procedures, 197 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 366 SDtfs, 443 SDslu, 159 SDs, 0 SdLazy, 702 SolverSat, 237 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, 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, 96 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 77364 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...