/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=WIDESTAMONGSMALL --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 [2020-08-21 22:48:33,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:48:33,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:48:33,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:48:33,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:48:33,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:48:33,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:48:33,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:48:33,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:48:33,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:48:33,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:48:33,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:48:33,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:48:33,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:48:33,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:48:33,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:48:33,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:48:33,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:48:33,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:48:33,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:48:33,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:48:33,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:48:33,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:48:33,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:48:33,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:48:33,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:48:33,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:48:33,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:48:33,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:48:33,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:48:33,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:48:33,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:48:33,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:48:33,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:48:33,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:48:33,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:48:33,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:48:33,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:48:33,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:48:33,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:48:33,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:48:33,336 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 22:48:33,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:48:33,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:48:33,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:48:33,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:48:33,383 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:48:33,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:48:33,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:48:33,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:48:33,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:48:33,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:48:33,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:48:33,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:48:33,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:48:33,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:48:33,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:48:33,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:48:33,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:48:33,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:48:33,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:48:33,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:48:33,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:48:33,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:48:33,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:48:33,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:48:33,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:48:33,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:48:33,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:48:33,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:48:33,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:48:33,390 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:48:33,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:48:33,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:48:33,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:48:33,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:48:33,737 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:48:33,738 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-21 22:48:33,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2b195ab1/86955b954e534773845f52f85ee1a859/FLAG052a36ed5 [2020-08-21 22:48:34,368 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:48:34,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-21 22:48:34,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2b195ab1/86955b954e534773845f52f85ee1a859/FLAG052a36ed5 [2020-08-21 22:48:34,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2b195ab1/86955b954e534773845f52f85ee1a859 [2020-08-21 22:48:34,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:48:34,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:48:34,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:48:34,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:48:34,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:48:34,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:48:34" (1/1) ... [2020-08-21 22:48:34,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d7d7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:34, skipping insertion in model container [2020-08-21 22:48:34,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:48:34" (1/1) ... [2020-08-21 22:48:34,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:48:34,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:48:35,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:48:35,232 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:48:35,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:48:35,348 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:48:35,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35 WrapperNode [2020-08-21 22:48:35,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:48:35,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:48:35,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:48:35,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:48:35,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (1/1) ... [2020-08-21 22:48:35,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (1/1) ... [2020-08-21 22:48:35,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (1/1) ... [2020-08-21 22:48:35,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (1/1) ... [2020-08-21 22:48:35,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (1/1) ... [2020-08-21 22:48:35,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (1/1) ... [2020-08-21 22:48:35,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (1/1) ... [2020-08-21 22:48:35,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:48:35,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:48:35,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:48:35,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:48:35,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (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 22:48:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:48:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:48:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:48:35,509 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:48:35,512 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:48:35,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:48:35,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:48:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:48:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:48:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:48:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:48:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:48:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:48:35,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:48:35,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:48:35,515 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:48:35,516 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:48:35,517 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:48:35,517 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:48:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:48:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:48:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:48:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:48:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:48:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:48:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:48:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:48:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:48:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:48:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:48:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:48:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:48:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:48:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:48:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:48:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:48:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:48:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:48:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:48:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:48:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:48:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:48:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:48:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:48:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:48:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:48:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:48:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:48:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:48:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:48:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:48:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:48:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:48:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:48:36,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:48:36,553 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:48:36,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:48:36 BoogieIcfgContainer [2020-08-21 22:48:36,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:48:36,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:48:36,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:48:36,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:48:36,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:48:34" (1/3) ... [2020-08-21 22:48:36,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d038cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:48:36, skipping insertion in model container [2020-08-21 22:48:36,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:48:35" (2/3) ... [2020-08-21 22:48:36,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d038cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:48:36, skipping insertion in model container [2020-08-21 22:48:36,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:48:36" (3/3) ... [2020-08-21 22:48:36,567 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2020-08-21 22:48:36,578 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:48:36,586 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:48:36,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:48:36,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:48:36,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:48:36,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:48:36,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:48:36,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:48:36,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:48:36,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:48:36,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:48:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-08-21 22:48:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:48:36,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:36,661 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 22:48:36,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:36,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1057158692, now seen corresponding path program 1 times [2020-08-21 22:48:36,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:36,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737062288] [2020-08-21 22:48:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,353 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:48:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:48:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:48:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:37,483 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 22:48:37,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737062288] [2020-08-21 22:48:37,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:37,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:48:37,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803898249] [2020-08-21 22:48:37,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:48:37,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:37,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:48:37,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:48:37,516 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-08-21 22:48:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:38,557 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-21 22:48:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:48:38,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 22:48:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:38,575 INFO L225 Difference]: With dead ends: 258 [2020-08-21 22:48:38,576 INFO L226 Difference]: Without dead ends: 140 [2020-08-21 22:48:38,581 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 22:48:38,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-21 22:48:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-21 22:48:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-21 22:48:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-21 22:48:38,663 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52 [2020-08-21 22:48:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:38,664 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-21 22:48:38,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:48:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-21 22:48:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 22:48:38,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:38,668 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 22:48:38,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:48:38,669 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:38,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1710283751, now seen corresponding path program 1 times [2020-08-21 22:48:38,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:38,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194043775] [2020-08-21 22:48:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,011 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:48:39,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:48:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:48:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:48:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:39,075 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 22:48:39,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194043775] [2020-08-21 22:48:39,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:39,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:48:39,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013419427] [2020-08-21 22:48:39,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:48:39,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:39,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:48:39,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:48:39,078 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-21 22:48:39,502 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:40,201 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-21 22:48:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:48:40,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 22:48:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:40,210 INFO L225 Difference]: With dead ends: 187 [2020-08-21 22:48:40,210 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 22:48:40,212 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 22:48:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 22:48:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-21 22:48:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 22:48:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-21 22:48:40,251 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53 [2020-08-21 22:48:40,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:40,251 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-21 22:48:40,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:48:40,251 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-21 22:48:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 22:48:40,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:40,254 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] [2020-08-21 22:48:40,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:48:40,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:40,255 INFO L82 PathProgramCache]: Analyzing trace with hash -830709307, now seen corresponding path program 1 times [2020-08-21 22:48:40,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:40,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951839146] [2020-08-21 22:48:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,579 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:48:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:48:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 22:48:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:40,731 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 22:48:40,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951839146] [2020-08-21 22:48:40,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:40,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:48:40,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531291807] [2020-08-21 22:48:40,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:48:40,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:40,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:48:40,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:48:40,739 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-21 22:48:41,167 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:48:41,473 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:48:41,753 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:48:41,987 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:48:42,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:42,908 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-21 22:48:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 22:48:42,908 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 22:48:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:42,911 INFO L225 Difference]: With dead ends: 200 [2020-08-21 22:48:42,912 INFO L226 Difference]: Without dead ends: 124 [2020-08-21 22:48:42,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:48:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-21 22:48:42,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-21 22:48:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 22:48:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-21 22:48:42,940 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58 [2020-08-21 22:48:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:42,940 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-21 22:48:42,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:48:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-21 22:48:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-21 22:48:42,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:42,943 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] [2020-08-21 22:48:42,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:48:42,943 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:42,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1834721556, now seen corresponding path program 1 times [2020-08-21 22:48:42,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:42,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556141465] [2020-08-21 22:48:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,216 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:48:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:48:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 22:48:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 22:48:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 22:48:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:43,341 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 22:48:43,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556141465] [2020-08-21 22:48:43,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:43,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:48:43,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864768619] [2020-08-21 22:48:43,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:48:43,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:48:43,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:48:43,345 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-08-21 22:48:43,714 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:48:45,015 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:48:45,296 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:48:45,522 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:48:45,889 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:48:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:46,202 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-08-21 22:48:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:48:46,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-21 22:48:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:46,208 INFO L225 Difference]: With dead ends: 299 [2020-08-21 22:48:46,208 INFO L226 Difference]: Without dead ends: 223 [2020-08-21 22:48:46,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:48:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-21 22:48:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2020-08-21 22:48:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-21 22:48:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-08-21 22:48:46,255 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66 [2020-08-21 22:48:46,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:46,256 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-08-21 22:48:46,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:48:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-08-21 22:48:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 22:48:46,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:46,259 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] [2020-08-21 22:48:46,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:48:46,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:46,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1027907532, now seen corresponding path program 1 times [2020-08-21 22:48:46,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:46,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782112002] [2020-08-21 22:48:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,528 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:48:46,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:48:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:48:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-21 22:48:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-21 22:48:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:48:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:46,615 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 22:48:46,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782112002] [2020-08-21 22:48:46,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:46,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:48:46,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101483540] [2020-08-21 22:48:46,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:48:46,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:46,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:48:46,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:48:46,618 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-08-21 22:48:46,963 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:48:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:47,504 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2020-08-21 22:48:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:48:47,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-08-21 22:48:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:47,507 INFO L225 Difference]: With dead ends: 296 [2020-08-21 22:48:47,507 INFO L226 Difference]: Without dead ends: 146 [2020-08-21 22:48:47,514 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 [2020-08-21 22:48:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-21 22:48:47,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-21 22:48:47,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 22:48:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-21 22:48:47,542 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 74 [2020-08-21 22:48:47,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:47,543 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-21 22:48:47,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:48:47,543 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-21 22:48:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 22:48:47,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:47,545 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] [2020-08-21 22:48:47,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:48:47,545 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:47,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:47,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1882239654, now seen corresponding path program 1 times [2020-08-21 22:48:47,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:47,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305334677] [2020-08-21 22:48:47,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:48:47,619 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:48:47,619 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:48:47,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:48:47,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:48:47 BoogieIcfgContainer [2020-08-21 22:48:47,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:48:47,646 INFO L168 Benchmark]: Toolchain (without parser) took 12968.43 ms. Allocated memory was 140.5 MB in the beginning and 459.3 MB in the end (delta: 318.8 MB). Free memory was 102.4 MB in the beginning and 369.0 MB in the end (delta: -266.6 MB). Peak memory consumption was 52.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:47,647 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:48:47,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.86 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 173.1 MB in the end (delta: -70.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:47,648 INFO L168 Benchmark]: Boogie Preprocessor took 90.12 ms. Allocated memory is still 203.4 MB. Free memory was 173.1 MB in the beginning and 169.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:47,649 INFO L168 Benchmark]: RCFGBuilder took 1118.68 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 169.0 MB in the beginning and 201.7 MB in the end (delta: -32.7 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:47,650 INFO L168 Benchmark]: TraceAbstraction took 11084.30 ms. Allocated memory was 236.5 MB in the beginning and 459.3 MB in the end (delta: 222.8 MB). Free memory was 201.7 MB in the beginning and 369.0 MB in the end (delta: -167.3 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:48:47,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.86 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 173.1 MB in the end (delta: -70.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.12 ms. Allocated memory is still 203.4 MB. Free memory was 173.1 MB in the beginning and 169.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1118.68 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 169.0 MB in the beginning and 201.7 MB in the end (delta: -32.7 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11084.30 ms. Allocated memory was 236.5 MB in the beginning and 459.3 MB in the end (delta: 222.8 MB). Free memory was 201.7 MB in the beginning and 369.0 MB in the end (delta: -167.3 MB). Peak memory consumption was 55.5 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: 11.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 445 SDtfs, 658 SDslu, 243 SDs, 0 SdLazy, 1339 SolverSat, 452 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s 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, 1.9s 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...