/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:06:43,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:06:43,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:06:43,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:06:43,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:06:43,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:06:43,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:06:43,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:06:43,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:06:43,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:06:43,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:06:43,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:06:43,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:06:43,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:06:43,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:06:43,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:06:43,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:06:43,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:06:43,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:06:43,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:06:43,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:06:43,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:06:43,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:06:43,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:06:43,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:06:43,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:06:43,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:06:43,697 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:06:43,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:06:43,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:06:43,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:06:43,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:06:43,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:06:43,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:06:43,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:06:43,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:06:43,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:06:43,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:06:43,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:06:43,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:06:43,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:06:43,710 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 [2020-09-21 10:06:43,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:06:43,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:06:43,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:06:43,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:06:43,754 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:06:43,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:06:43,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:06:43,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:06:43,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:06:43,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:06:43,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:06:43,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:06:43,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:06:43,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:06:43,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:06:43,758 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:06:43,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:06:43,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:06:43,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:06:43,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:06:43,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:06:43,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:06:43,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:06:43,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:06:43,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:06:43,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:06:43,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:06:43,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:06:43,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:06:43,760 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 -> false [2020-09-21 10:06:44,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:06:44,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:06:44,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:06:44,286 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:06:44,286 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:06:44,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-09-21 10:06:44,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a9d63dcc/b77741a575e44c0ba8c308e20a0ea098/FLAG4be8d87a5 [2020-09-21 10:06:45,038 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:06:45,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-09-21 10:06:45,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a9d63dcc/b77741a575e44c0ba8c308e20a0ea098/FLAG4be8d87a5 [2020-09-21 10:06:45,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a9d63dcc/b77741a575e44c0ba8c308e20a0ea098 [2020-09-21 10:06:45,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:06:45,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:06:45,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:06:45,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:06:45,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:06:45,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:45,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217e3fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45, skipping insertion in model container [2020-09-21 10:06:45,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:45,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:06:45,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:06:45,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:06:45,772 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:06:45,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:06:45,987 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:06:45,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45 WrapperNode [2020-09-21 10:06:45,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:06:45,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:06:45,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:06:45,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:06:46,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:46,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:46,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:46,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:46,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:46,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:46,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (1/1) ... [2020-09-21 10:06:46,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:06:46,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:06:46,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:06:46,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:06:46,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (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 [2020-09-21 10:06:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:06:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:06:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:06:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:06:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:06:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:06:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:06:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:06:46,183 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:06:46,183 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:06:46,183 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:06:46,183 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:06:46,183 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:06:46,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:06:46,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:06:46,184 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:06:46,184 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:06:46,184 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:06:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:06:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:06:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:06:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:06:46,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:06:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:06:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:06:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:06:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:06:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:06:46,186 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:06:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:06:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:06:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:06:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:06:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:06:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:06:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:06:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:06:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:06:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:06:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:06:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:06:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:06:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:06:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:06:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:06:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:06:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:06:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:06:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:06:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:06:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:06:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:06:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:06:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:06:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:06:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:06:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:06:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:06:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:06:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:06:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:06:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:06:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:06:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:06:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:06:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:06:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:06:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:06:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:06:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:06:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:06:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:06:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:06:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:06:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:06:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:06:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:06:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:06:47,331 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:06:47,331 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:06:47,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:06:47 BoogieIcfgContainer [2020-09-21 10:06:47,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:06:47,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:06:47,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:06:47,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:06:47,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:06:45" (1/3) ... [2020-09-21 10:06:47,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b616f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:06:47, skipping insertion in model container [2020-09-21 10:06:47,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:45" (2/3) ... [2020-09-21 10:06:47,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b616f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:06:47, skipping insertion in model container [2020-09-21 10:06:47,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:06:47" (3/3) ... [2020-09-21 10:06:47,347 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product05.cil.c [2020-09-21 10:06:47,359 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:06:47,370 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:06:47,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:06:47,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:06:47,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:06:47,426 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:06:47,426 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:06:47,426 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:06:47,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:06:47,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:06:47,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:06:47,454 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-09-21 10:06:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:06:47,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:47,467 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] [2020-09-21 10:06:47,467 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:47,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:47,474 INFO L82 PathProgramCache]: Analyzing trace with hash 385551815, now seen corresponding path program 1 times [2020-09-21 10:06:47,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:47,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709133910] [2020-09-21 10:06:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,167 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:06:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:06:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:48,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709133910] [2020-09-21 10:06:48,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:48,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:06:48,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391922679] [2020-09-21 10:06:48,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:06:48,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:48,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:06:48,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:06:48,399 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-09-21 10:06:49,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:49,420 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-09-21 10:06:49,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:06:49,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 10:06:49,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:49,442 INFO L225 Difference]: With dead ends: 249 [2020-09-21 10:06:49,442 INFO L226 Difference]: Without dead ends: 135 [2020-09-21 10:06:49,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:06:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-21 10:06:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-09-21 10:06:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-21 10:06:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-09-21 10:06:49,548 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 52 [2020-09-21 10:06:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:49,548 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-09-21 10:06:49,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:06:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-09-21 10:06:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 10:06:49,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:49,553 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] [2020-09-21 10:06:49,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:06:49,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:49,554 INFO L82 PathProgramCache]: Analyzing trace with hash 881400109, now seen corresponding path program 1 times [2020-09-21 10:06:49,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:49,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847189401] [2020-09-21 10:06:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:49,980 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:06:49,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:50,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:50,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:06:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:50,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:06:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:06:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:50,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847189401] [2020-09-21 10:06:50,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:50,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:06:50,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662166457] [2020-09-21 10:06:50,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:06:50,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:50,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:06:50,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:06:50,058 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-09-21 10:06:50,520 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:51,286 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-09-21 10:06:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:06:51,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 10:06:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:51,291 INFO L225 Difference]: With dead ends: 182 [2020-09-21 10:06:51,291 INFO L226 Difference]: Without dead ends: 119 [2020-09-21 10:06:51,293 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 [2020-09-21 10:06:51,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-21 10:06:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-09-21 10:06:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-21 10:06:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-09-21 10:06:51,350 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 53 [2020-09-21 10:06:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:51,350 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-09-21 10:06:51,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:06:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-09-21 10:06:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:06:51,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:51,361 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] [2020-09-21 10:06:51,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:06:51,361 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:51,362 INFO L82 PathProgramCache]: Analyzing trace with hash 633168041, now seen corresponding path program 1 times [2020-09-21 10:06:51,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:51,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118265538] [2020-09-21 10:06:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,841 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:06:51,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:06:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:06:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:06:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:52,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118265538] [2020-09-21 10:06:52,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:52,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:06:52,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610867254] [2020-09-21 10:06:52,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:06:52,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:52,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:06:52,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:06:52,005 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-09-21 10:06:52,409 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:06:52,797 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:06:53,133 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:06:53,433 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:06:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:54,425 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-09-21 10:06:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:06:54,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 10:06:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:54,430 INFO L225 Difference]: With dead ends: 191 [2020-09-21 10:06:54,430 INFO L226 Difference]: Without dead ends: 119 [2020-09-21 10:06:54,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:06:54,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-21 10:06:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-09-21 10:06:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-21 10:06:54,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-09-21 10:06:54,461 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 57 [2020-09-21 10:06:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:54,462 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-09-21 10:06:54,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:06:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-09-21 10:06:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:06:54,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:54,463 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] [2020-09-21 10:06:54,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:06:54,464 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:54,464 INFO L82 PathProgramCache]: Analyzing trace with hash 119188522, now seen corresponding path program 1 times [2020-09-21 10:06:54,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:54,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785819769] [2020-09-21 10:06:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,812 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:06:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:06:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:06:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:06:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 10:06:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:54,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785819769] [2020-09-21 10:06:54,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:54,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:06:54,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750732177] [2020-09-21 10:06:54,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:06:54,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:06:54,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:06:54,922 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 8 states. [2020-09-21 10:06:55,342 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:06:56,730 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:06:57,087 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:06:57,385 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:06:57,850 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:06:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:58,167 INFO L93 Difference]: Finished difference Result 284 states and 375 transitions. [2020-09-21 10:06:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:06:58,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-21 10:06:58,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:58,173 INFO L225 Difference]: With dead ends: 284 [2020-09-21 10:06:58,173 INFO L226 Difference]: Without dead ends: 212 [2020-09-21 10:06:58,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:06:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-21 10:06:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 166. [2020-09-21 10:06:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-21 10:06:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2020-09-21 10:06:58,228 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 65 [2020-09-21 10:06:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:58,229 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2020-09-21 10:06:58,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:06:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2020-09-21 10:06:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 10:06:58,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:58,231 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] [2020-09-21 10:06:58,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:06:58,232 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:58,232 INFO L82 PathProgramCache]: Analyzing trace with hash 2068866518, now seen corresponding path program 1 times [2020-09-21 10:06:58,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:58,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693119911] [2020-09-21 10:06:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,564 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:06:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 10:06:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:06:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:06:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-21 10:06:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 10:06:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:06:58,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693119911] [2020-09-21 10:06:58,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:06:58,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:06:58,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635269509] [2020-09-21 10:06:58,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:06:58,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:58,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:06:58,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:06:58,695 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand 6 states. [2020-09-21 10:06:59,032 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:06:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:59,544 INFO L93 Difference]: Finished difference Result 279 states and 345 transitions. [2020-09-21 10:06:59,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:06:59,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-09-21 10:06:59,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:59,552 INFO L225 Difference]: With dead ends: 279 [2020-09-21 10:06:59,552 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 10:06:59,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:06:59,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 10:06:59,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-09-21 10:06:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 10:06:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-09-21 10:06:59,609 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 73 [2020-09-21 10:06:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:59,610 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-09-21 10:06:59,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:06:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-09-21 10:06:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 10:06:59,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:59,612 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] [2020-09-21 10:06:59,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:06:59,612 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash -760855184, now seen corresponding path program 1 times [2020-09-21 10:06:59,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:59,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037779620] [2020-09-21 10:06:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:06:59,724 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:06:59,725 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:06:59,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:06:59,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:06:59 BoogieIcfgContainer [2020-09-21 10:06:59,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:06:59,762 INFO L168 Benchmark]: Toolchain (without parser) took 14450.07 ms. Allocated memory was 142.6 MB in the beginning and 437.8 MB in the end (delta: 295.2 MB). Free memory was 103.6 MB in the beginning and 267.8 MB in the end (delta: -164.2 MB). Peak memory consumption was 131.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:59,763 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:06:59,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.44 ms. Allocated memory was 142.6 MB in the beginning and 205.5 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 176.3 MB in the end (delta: -73.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:59,764 INFO L168 Benchmark]: Boogie Preprocessor took 97.25 ms. Allocated memory is still 205.5 MB. Free memory was 176.3 MB in the beginning and 172.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:59,765 INFO L168 Benchmark]: RCFGBuilder took 1251.64 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 172.2 MB in the beginning and 196.4 MB in the end (delta: -24.2 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:59,766 INFO L168 Benchmark]: TraceAbstraction took 12420.88 ms. Allocated memory was 233.3 MB in the beginning and 437.8 MB in the end (delta: 204.5 MB). Free memory was 195.1 MB in the beginning and 267.8 MB in the end (delta: -72.7 MB). Peak memory consumption was 131.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:59,770 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.6 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.44 ms. Allocated memory was 142.6 MB in the beginning and 205.5 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 176.3 MB in the end (delta: -73.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.25 ms. Allocated memory is still 205.5 MB. Free memory was 176.3 MB in the beginning and 172.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1251.64 ms. Allocated memory was 205.5 MB in the beginning and 233.3 MB in the end (delta: 27.8 MB). Free memory was 172.2 MB in the beginning and 196.4 MB in the end (delta: -24.2 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12420.88 ms. Allocated memory was 233.3 MB in the beginning and 437.8 MB in the end (delta: 204.5 MB). Free memory was 195.1 MB in the beginning and 267.8 MB in the end (delta: -72.7 MB). Peak memory consumption was 131.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L95] int pumpRunning = 0; [L96] int systemActive = 1; [L297] int cleanupTimeShifts = 4; [L562] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; [L370] int retValue_acc ; [L371] int tmp ; [L375] FCALL select_helpers() [L376] FCALL select_features() [L377] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L377] RET, EXPR valid_product() [L377] tmp = valid_product() [L379] COND TRUE \read(tmp) [L381] FCALL setup() [L382] CALL runTest() [L364] CALL test() [L233] int splverifierCounter ; [L234] int tmp ; [L235] int tmp___0 ; [L236] int tmp___1 ; [L237] int tmp___2 ; [L240] splverifierCounter = 0 [L242] COND TRUE 1 [L244] COND TRUE splverifierCounter < 4 [L250] tmp = __VERIFIER_nondet_int() [L252] COND TRUE \read(tmp) [L254] CALL waterRise() [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 [L254] RET waterRise() [L260] tmp___0 = __VERIFIER_nondet_int() [L262] COND FALSE !(\read(tmp___0)) [L270] tmp___2 = __VERIFIER_nondet_int() [L272] COND TRUE \read(tmp___2) [L285] CALL timeShift() [L103] COND FALSE !(\read(pumpRunning)) [L110] COND TRUE \read(systemActive) [L112] CALL processEnvironment() [L132] int tmp ; [L135] COND FALSE !(\read(pumpRunning)) [L150] FCALL processEnvironment__wrappee__base() [L112] RET processEnvironment() [L118] CALL __utac_acc__Specification3_spec__1() [L841] int tmp ; [L842] int tmp___0 ; [L843] int tmp___1 ; [L847] CALL, EXPR isMethaneLevelCritical() [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); [L847] RET, EXPR isMethaneLevelCritical() [L847] tmp = isMethaneLevelCritical() [L849] COND FALSE !(\read(tmp)) [L853] CALL, EXPR getWaterLevel() [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); [L853] RET, EXPR getWaterLevel() [L853] tmp___0 = getWaterLevel() [L855] COND TRUE tmp___0 == 2 [L857] CALL, EXPR isPumpRunning() [L184] int retValue_acc ; [L187] retValue_acc = pumpRunning [L188] return (retValue_acc); [L857] RET, EXPR isPumpRunning() [L857] tmp___1 = isPumpRunning() [L859] COND FALSE !(\read(tmp___1)) [L863] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 429 SDtfs, 689 SDslu, 227 SDs, 0 SdLazy, 1249 SolverSat, 421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred 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, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 84162 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...