/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 interpolation-heuristic=FIRST --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_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:46:09,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:46:09,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:46:09,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:46:09,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:46:09,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:46:09,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:46:09,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:46:09,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:46:09,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:46:09,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:46:09,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:46:09,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:46:09,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:46:09,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:46:09,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:46:09,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:46:09,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:46:09,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:46:09,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:46:09,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:46:09,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:46:09,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:46:09,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:46:09,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:46:09,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:46:09,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:46:09,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:46:09,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:46:09,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:46:09,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:46:09,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:46:09,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:46:09,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:46:09,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:46:09,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:46:09,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:46:09,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:46:09,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:46:09,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:46:09,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:46:09,846 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 14:46:09,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:46:09,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:46:09,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:46:09,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:46:09,890 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:46:09,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:46:09,891 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:46:09,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:46:09,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:46:09,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:46:09,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:46:09,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:46:09,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:46:09,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:46:09,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:46:09,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:46:09,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:46:09,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:46:09,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:46:09,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:46:09,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:46:09,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:46:09,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:46:09,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:46:09,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:46:09,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:46:09,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:46:09,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:46:09,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:46:09,897 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:46:10,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:46:10,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:46:10,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:46:10,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:46:10,217 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:46:10,219 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-21 14:46:10,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362d46dc9/67b2abbaf08447d1b533f55195e6dbbb/FLAGb28ce593c [2020-08-21 14:46:10,799 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:46:10,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product64.cil.c [2020-08-21 14:46:10,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362d46dc9/67b2abbaf08447d1b533f55195e6dbbb/FLAGb28ce593c [2020-08-21 14:46:11,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362d46dc9/67b2abbaf08447d1b533f55195e6dbbb [2020-08-21 14:46:11,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:46:11,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:46:11,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:46:11,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:46:11,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:46:11,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11, skipping insertion in model container [2020-08-21 14:46:11,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:46:11,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:46:11,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:46:11,738 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:46:11,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:46:11,879 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:46:11,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11 WrapperNode [2020-08-21 14:46:11,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:46:11,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:46:11,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:46:11,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:46:11,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (1/1) ... [2020-08-21 14:46:11,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:46:11,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:46:11,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:46:11,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:46:11,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (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 14:46:12,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:46:12,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:46:12,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:46:12,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:46:12,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:46:12,041 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:46:12,042 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:46:12,042 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:46:12,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:46:12,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:46:12,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 14:46:12,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:46:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 14:46:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:46:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:46:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:46:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:46:12,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:46:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:46:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 14:46:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 14:46:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:46:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:46:12,044 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:46:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:46:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:46:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:46:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:46:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:46:12,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:46:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 14:46:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:46:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:46:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:46:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:46:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:46:12,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:46:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:46:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:46:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:46:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:46:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:46:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:46:12,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:46:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:46:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:46:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:46:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:46:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:46:12,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:46:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:46:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:46:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:46:12,049 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:46:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:46:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 14:46:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:46:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:46:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:46:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:46:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:46:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 14:46:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:46:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 14:46:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:46:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:46:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:46:12,052 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:46:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 14:46:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 14:46:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:46:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 14:46:12,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:46:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:46:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:46:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:46:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:46:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:46:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:46:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:46:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:46:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:46:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:46:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:46:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:46:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:46:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:46:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:46:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:46:12,057 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:46:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:46:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:46:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:46:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:46:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:46:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:46:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:46:13,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:46:13,234 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:46:13,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:46:13 BoogieIcfgContainer [2020-08-21 14:46:13,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:46:13,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:46:13,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:46:13,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:46:13,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:46:11" (1/3) ... [2020-08-21 14:46:13,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d2550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:46:13, skipping insertion in model container [2020-08-21 14:46:13,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:46:11" (2/3) ... [2020-08-21 14:46:13,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d2550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:46:13, skipping insertion in model container [2020-08-21 14:46:13,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:46:13" (3/3) ... [2020-08-21 14:46:13,250 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product64.cil.c [2020-08-21 14:46:13,261 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:46:13,270 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:46:13,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:46:13,313 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:46:13,313 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:46:13,313 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:46:13,314 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:46:13,314 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:46:13,314 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:46:13,314 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:46:13,314 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:46:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states. [2020-08-21 14:46:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 14:46:13,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:13,352 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 14:46:13,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:13,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:13,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1153750625, now seen corresponding path program 1 times [2020-08-21 14:46:13,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:13,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558871558] [2020-08-21 14:46:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,112 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:14,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:46:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:46:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:46:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:14,221 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 14:46:14,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558871558] [2020-08-21 14:46:14,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:14,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 14:46:14,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797104552] [2020-08-21 14:46:14,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 14:46:14,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:14,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 14:46:14,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:46:14,250 INFO L87 Difference]: Start difference. First operand 209 states. Second operand 3 states. [2020-08-21 14:46:15,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:15,703 INFO L93 Difference]: Finished difference Result 380 states and 494 transitions. [2020-08-21 14:46:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:46:15,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 14:46:15,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:15,720 INFO L225 Difference]: With dead ends: 380 [2020-08-21 14:46:15,721 INFO L226 Difference]: Without dead ends: 205 [2020-08-21 14:46:15,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 14:46:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-08-21 14:46:15,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 166. [2020-08-21 14:46:15,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-21 14:46:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2020-08-21 14:46:15,849 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 52 [2020-08-21 14:46:15,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:15,850 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2020-08-21 14:46:15,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 14:46:15,850 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2020-08-21 14:46:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 14:46:15,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:15,854 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 14:46:15,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:46:15,855 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:15,856 INFO L82 PathProgramCache]: Analyzing trace with hash -2119837363, now seen corresponding path program 1 times [2020-08-21 14:46:15,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:15,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634542540] [2020-08-21 14:46:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,171 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:16,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:46:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 14:46:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:46:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:16,238 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 14:46:16,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634542540] [2020-08-21 14:46:16,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:16,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:46:16,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839961702] [2020-08-21 14:46:16,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:46:16,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:16,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:46:16,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:46:16,242 INFO L87 Difference]: Start difference. First operand 166 states and 198 transitions. Second operand 4 states. [2020-08-21 14:46:16,700 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:17,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:17,845 INFO L93 Difference]: Finished difference Result 303 states and 373 transitions. [2020-08-21 14:46:17,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:46:17,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 14:46:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:17,853 INFO L225 Difference]: With dead ends: 303 [2020-08-21 14:46:17,853 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 14:46:17,857 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 14:46:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 14:46:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-21 14:46:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-21 14:46:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 186 transitions. [2020-08-21 14:46:17,942 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 186 transitions. Word has length 53 [2020-08-21 14:46:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:17,943 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 186 transitions. [2020-08-21 14:46:17,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:46:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 186 transitions. [2020-08-21 14:46:17,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 14:46:17,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:17,955 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 14:46:17,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:46:17,956 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:17,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1174645714, now seen corresponding path program 1 times [2020-08-21 14:46:17,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:17,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546055128] [2020-08-21 14:46:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,310 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:18,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:46:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:46:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:46:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:18,396 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 14:46:18,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546055128] [2020-08-21 14:46:18,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:18,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:46:18,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614007774] [2020-08-21 14:46:18,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:46:18,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:18,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:46:18,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:46:18,399 INFO L87 Difference]: Start difference. First operand 157 states and 186 transitions. Second operand 8 states. [2020-08-21 14:46:18,763 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:19,073 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:19,314 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:19,541 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:20,256 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:46:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:22,816 INFO L93 Difference]: Finished difference Result 540 states and 672 transitions. [2020-08-21 14:46:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:46:22,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 14:46:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:22,822 INFO L225 Difference]: With dead ends: 540 [2020-08-21 14:46:22,823 INFO L226 Difference]: Without dead ends: 407 [2020-08-21 14:46:22,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 14:46:22,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-08-21 14:46:22,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 334. [2020-08-21 14:46:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-21 14:46:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 407 transitions. [2020-08-21 14:46:22,914 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 407 transitions. Word has length 58 [2020-08-21 14:46:22,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:22,915 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 407 transitions. [2020-08-21 14:46:22,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:46:22,915 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 407 transitions. [2020-08-21 14:46:22,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 14:46:22,917 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:22,917 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] [2020-08-21 14:46:22,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:46:22,918 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:22,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:22,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1545438199, now seen corresponding path program 1 times [2020-08-21 14:46:22,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:22,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157247572] [2020-08-21 14:46:22,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,258 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 14:46:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:46:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:46:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:46:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:46:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:46:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:46:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:46:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 14:46:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:46:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:46:23,381 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 14:46:23,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157247572] [2020-08-21 14:46:23,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:46:23,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 14:46:23,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599287374] [2020-08-21 14:46:23,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 14:46:23,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:46:23,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 14:46:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 14:46:23,385 INFO L87 Difference]: Start difference. First operand 334 states and 407 transitions. Second operand 8 states. [2020-08-21 14:46:23,812 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:25,236 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:25,684 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:26,015 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 14:46:26,301 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 14:46:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:46:27,613 INFO L93 Difference]: Finished difference Result 1041 states and 1365 transitions. [2020-08-21 14:46:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:46:27,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 14:46:27,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:46:27,619 INFO L225 Difference]: With dead ends: 1041 [2020-08-21 14:46:27,620 INFO L226 Difference]: Without dead ends: 731 [2020-08-21 14:46:27,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:46:27,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-21 14:46:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 653. [2020-08-21 14:46:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-08-21 14:46:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 809 transitions. [2020-08-21 14:46:27,765 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 809 transitions. Word has length 63 [2020-08-21 14:46:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:46:27,765 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 809 transitions. [2020-08-21 14:46:27,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 14:46:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 809 transitions. [2020-08-21 14:46:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 14:46:27,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:46:27,770 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] [2020-08-21 14:46:27,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:46:27,770 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:46:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:46:27,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1461698211, now seen corresponding path program 1 times [2020-08-21 14:46:27,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:46:27,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807181114] [2020-08-21 14:46:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:46:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:46:27,827 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:46:27,828 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:46:27,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:46:27,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:46:27 BoogieIcfgContainer [2020-08-21 14:46:27,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:46:27,856 INFO L168 Benchmark]: Toolchain (without parser) took 16680.20 ms. Allocated memory was 141.0 MB in the beginning and 483.4 MB in the end (delta: 342.4 MB). Free memory was 102.8 MB in the beginning and 198.8 MB in the end (delta: -96.0 MB). Peak memory consumption was 246.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:46:27,857 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 14:46:27,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.74 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 169.1 MB in the end (delta: -66.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-21 14:46:27,859 INFO L168 Benchmark]: Boogie Preprocessor took 87.15 ms. Allocated memory is still 205.0 MB. Free memory was 169.1 MB in the beginning and 165.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 14:46:27,860 INFO L168 Benchmark]: RCFGBuilder took 1273.55 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 165.2 MB in the beginning and 184.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:46:27,861 INFO L168 Benchmark]: TraceAbstraction took 14611.62 ms. Allocated memory was 233.8 MB in the beginning and 483.4 MB in the end (delta: 249.6 MB). Free memory was 182.8 MB in the beginning and 198.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 233.6 MB. Max. memory is 7.1 GB. [2020-08-21 14:46:27,865 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.74 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 169.1 MB in the end (delta: -66.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.15 ms. Allocated memory is still 205.0 MB. Free memory was 169.1 MB in the beginning and 165.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1273.55 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 165.2 MB in the beginning and 184.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14611.62 ms. Allocated memory was 233.8 MB in the beginning and 483.4 MB in the end (delta: 249.6 MB). Free memory was 182.8 MB in the beginning and 198.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 233.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 996]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L90] int pumpRunning = 0; [L91] int systemActive = 1; [L427] int waterLevel = 1; [L428] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L896] int cleanupTimeShifts = 4; [L969] int retValue_acc ; [L970] int tmp ; [L974] FCALL select_helpers() [L975] FCALL select_features() [L976] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L976] RET, EXPR valid_product() [L976] tmp = valid_product() [L978] COND TRUE \read(tmp) [L980] FCALL setup() [L981] CALL runTest() [L963] CALL test() [L358] int splverifierCounter ; [L359] int tmp ; [L360] int tmp___0 ; [L361] int tmp___1 ; [L362] int tmp___2 ; [L365] splverifierCounter = 0 [L367] COND TRUE 1 [L369] COND TRUE splverifierCounter < 4 [L375] tmp = __VERIFIER_nondet_int() [L377] COND TRUE \read(tmp) [L379] CALL waterRise() [L445] COND TRUE waterLevel < 2 [L446] waterLevel = waterLevel + 1 [L379] RET waterRise() [L385] tmp___0 = __VERIFIER_nondet_int() [L387] COND FALSE !(\read(tmp___0)) [L395] tmp___2 = __VERIFIER_nondet_int() [L397] COND FALSE !(\read(tmp___2)) [L403] tmp___1 = __VERIFIER_nondet_int() [L405] COND TRUE \read(tmp___1) [L407] CALL stopSystem() [L334] COND FALSE !(\read(pumpRunning)) [L341] systemActive = 0 [L407] RET stopSystem() [L414] CALL timeShift() [L98] COND FALSE !(\read(pumpRunning)) [L105] COND FALSE !(\read(systemActive)) [L113] CALL __utac_acc__Specification3_spec__1() [L1002] int tmp ; [L1003] int tmp___0 ; [L1004] int tmp___1 ; [L1008] CALL, EXPR isMethaneLevelCritical() [L466] int retValue_acc ; [L469] retValue_acc = methaneLevelCritical [L470] return (retValue_acc); [L1008] RET, EXPR isMethaneLevelCritical() [L1008] tmp = isMethaneLevelCritical() [L1010] COND FALSE !(\read(tmp)) [L1014] CALL, EXPR getWaterLevel() [L498] int retValue_acc ; [L501] retValue_acc = waterLevel [L502] return (retValue_acc); [L1014] RET, EXPR getWaterLevel() [L1014] tmp___0 = getWaterLevel() [L1016] COND TRUE tmp___0 == 2 [L1018] CALL, EXPR isPumpRunning() [L248] int retValue_acc ; [L251] retValue_acc = pumpRunning [L252] return (retValue_acc); [L1018] RET, EXPR isPumpRunning() [L1018] tmp___1 = isPumpRunning() [L1020] COND FALSE !(\read(tmp___1)) [L1024] CALL __automaton_fail() [L996] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 44 procedures, 265 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 627 SDtfs, 1054 SDslu, 413 SDs, 0 SdLazy, 2428 SolverSat, 646 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=653occurred 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: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 222 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...