/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:06:22,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:06:22,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:06:22,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:06:22,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:06:22,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:06:22,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:06:22,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:06:22,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:06:22,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:06:22,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:06:22,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:06:22,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:06:22,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:06:22,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:06:22,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:06:22,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:06:22,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:06:22,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:06:22,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:06:22,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:06:22,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:06:22,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:06:22,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:06:22,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:06:22,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:06:22,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:06:22,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:06:22,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:06:22,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:06:22,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:06:22,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:06:22,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:06:22,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:06:22,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:06:22,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:06:22,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:06:22,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:06:22,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:06:22,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:06:22,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:06:22,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 06:06:22,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:06:22,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:06:22,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:06:22,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:06:22,275 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:06:22,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:06:22,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:06:22,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:06:22,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:06:22,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:06:22,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:06:22,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:06:22,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:06:22,277 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:06:22,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:06:22,277 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:06:22,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:06:22,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:06:22,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:06:22,278 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:06:22,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:06:22,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:06:22,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:06:22,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:06:22,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:06:22,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:06:22,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:06:22,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:06:22,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:06:22,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:06:22,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:06:22,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:06:22,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:06:22,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:06:22,646 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:06:22,647 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2020-08-22 06:06:22,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d54090e11/84d020fbab424b368ff75ce398019651/FLAGc50350965 [2020-08-22 06:06:23,225 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:06:23,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product16.cil.c [2020-08-22 06:06:23,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d54090e11/84d020fbab424b368ff75ce398019651/FLAGc50350965 [2020-08-22 06:06:23,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d54090e11/84d020fbab424b368ff75ce398019651 [2020-08-22 06:06:23,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:06:23,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:06:23,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:06:23,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:06:23,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:06:23,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:23" (1/1) ... [2020-08-22 06:06:23,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694adced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:23, skipping insertion in model container [2020-08-22 06:06:23,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:06:23" (1/1) ... [2020-08-22 06:06:23,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:06:23,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:06:24,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:06:24,119 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:06:24,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:06:24,230 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:06:24,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24 WrapperNode [2020-08-22 06:06:24,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:06:24,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:06:24,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:06:24,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:06:24,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (1/1) ... [2020-08-22 06:06:24,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (1/1) ... [2020-08-22 06:06:24,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (1/1) ... [2020-08-22 06:06:24,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (1/1) ... [2020-08-22 06:06:24,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (1/1) ... [2020-08-22 06:06:24,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (1/1) ... [2020-08-22 06:06:24,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (1/1) ... [2020-08-22 06:06:24,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:06:24,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:06:24,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:06:24,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:06:24,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:06:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:06:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:06:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 06:06:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 06:06:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 06:06:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 06:06:24,385 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 06:06:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 06:06:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:06:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 06:06:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 06:06:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 06:06:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 06:06:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 06:06:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 06:06:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 06:06:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 06:06:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 06:06:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 06:06:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-22 06:06:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 06:06:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 06:06:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 06:06:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 06:06:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 06:06:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 06:06:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 06:06:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 06:06:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 06:06:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 06:06:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 06:06:24,389 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 06:06:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 06:06:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 06:06:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 06:06:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 06:06:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 06:06:24,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 06:06:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:06:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:06:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 06:06:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 06:06:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 06:06:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 06:06:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 06:06:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 06:06:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 06:06:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 06:06:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 06:06:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 06:06:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 06:06:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 06:06:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 06:06:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 06:06:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:06:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 06:06:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:06:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:06:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 06:06:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:06:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:06:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:06:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:06:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 06:06:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:06:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 06:06:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 06:06:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:06:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 06:06:24,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 06:06:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:06:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 06:06:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 06:06:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 06:06:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 06:06:24,399 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 06:06:24,400 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 06:06:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 06:06:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 06:06:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 06:06:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 06:06:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 06:06:24,401 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 06:06:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 06:06:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-22 06:06:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 06:06:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 06:06:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:06:24,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:06:24,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:06:25,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:06:25,422 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 06:06:25,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:25 BoogieIcfgContainer [2020-08-22 06:06:25,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:06:25,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:06:25,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:06:25,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:06:25,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:06:23" (1/3) ... [2020-08-22 06:06:25,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c791ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:25, skipping insertion in model container [2020-08-22 06:06:25,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:06:24" (2/3) ... [2020-08-22 06:06:25,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c791ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:06:25, skipping insertion in model container [2020-08-22 06:06:25,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:06:25" (3/3) ... [2020-08-22 06:06:25,436 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product16.cil.c [2020-08-22 06:06:25,448 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:06:25,457 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:06:25,473 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:06:25,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:06:25,500 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:06:25,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:06:25,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:06:25,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:06:25,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:06:25,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:06:25,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:06:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-22 06:06:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 06:06:25,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:25,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:25,537 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:25,544 INFO L82 PathProgramCache]: Analyzing trace with hash -490913979, now seen corresponding path program 1 times [2020-08-22 06:06:25,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:25,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642982703] [2020-08-22 06:06:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,232 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 06:06:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:06:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:06:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:26,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642982703] [2020-08-22 06:06:26,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:26,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:06:26,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095273674] [2020-08-22 06:06:26,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:06:26,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:26,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:06:26,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:06:26,418 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-22 06:06:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:27,503 INFO L93 Difference]: Finished difference Result 272 states and 360 transitions. [2020-08-22 06:06:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:06:27,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 06:06:27,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:27,520 INFO L225 Difference]: With dead ends: 272 [2020-08-22 06:06:27,520 INFO L226 Difference]: Without dead ends: 148 [2020-08-22 06:06:27,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:06:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-22 06:06:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 115. [2020-08-22 06:06:27,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-22 06:06:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-08-22 06:06:27,615 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 52 [2020-08-22 06:06:27,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:27,615 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-08-22 06:06:27,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:06:27,616 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-08-22 06:06:27,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 06:06:27,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:27,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:27,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:06:27,620 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:27,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:27,621 INFO L82 PathProgramCache]: Analyzing trace with hash 30555541, now seen corresponding path program 1 times [2020-08-22 06:06:27,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:27,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078937672] [2020-08-22 06:06:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,018 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:28,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:06:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 06:06:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 06:06:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:28,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078937672] [2020-08-22 06:06:28,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:28,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:06:28,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083482288] [2020-08-22 06:06:28,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:06:28,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:28,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:06:28,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:06:28,127 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 4 states. [2020-08-22 06:06:28,587 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:06:29,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:29,288 INFO L93 Difference]: Finished difference Result 195 states and 239 transitions. [2020-08-22 06:06:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:06:29,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 06:06:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:29,292 INFO L225 Difference]: With dead ends: 195 [2020-08-22 06:06:29,293 INFO L226 Difference]: Without dead ends: 132 [2020-08-22 06:06:29,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:06:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-22 06:06:29,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 106. [2020-08-22 06:06:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-08-22 06:06:29,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2020-08-22 06:06:29,333 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 53 [2020-08-22 06:06:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:29,333 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2020-08-22 06:06:29,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:06:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2020-08-22 06:06:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 06:06:29,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:29,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:06:29,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:06:29,336 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:29,337 INFO L82 PathProgramCache]: Analyzing trace with hash -150591273, now seen corresponding path program 1 times [2020-08-22 06:06:29,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:29,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503236936] [2020-08-22 06:06:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,648 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:29,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 06:06:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 06:06:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 06:06:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:29,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503236936] [2020-08-22 06:06:29,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:29,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:06:29,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444648629] [2020-08-22 06:06:29,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:06:29,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:29,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:06:29,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:06:29,766 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 8 states. [2020-08-22 06:06:30,105 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:30,371 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:30,641 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:30,865 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:31,591 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 06:06:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:33,063 INFO L93 Difference]: Finished difference Result 375 states and 467 transitions. [2020-08-22 06:06:33,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 06:06:33,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 06:06:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:33,069 INFO L225 Difference]: With dead ends: 375 [2020-08-22 06:06:33,069 INFO L226 Difference]: Without dead ends: 293 [2020-08-22 06:06:33,071 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 [2020-08-22 06:06:33,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-22 06:06:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 232. [2020-08-22 06:06:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-22 06:06:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 281 transitions. [2020-08-22 06:06:33,146 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 281 transitions. Word has length 58 [2020-08-22 06:06:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:33,149 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 281 transitions. [2020-08-22 06:06:33,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:06:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 281 transitions. [2020-08-22 06:06:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 06:06:33,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:33,153 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] [2020-08-22 06:06:33,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:06:33,154 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:33,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1860592830, now seen corresponding path program 1 times [2020-08-22 06:06:33,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:33,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401084019] [2020-08-22 06:06:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,531 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 06:06:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:06:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:06:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 06:06:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 06:06:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 06:06:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 06:06:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 06:06:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 06:06:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 06:06:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:06:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:06:33,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401084019] [2020-08-22 06:06:33,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:06:33,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 06:06:33,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237031412] [2020-08-22 06:06:33,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:06:33,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:06:33,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:06:33,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:06:33,648 INFO L87 Difference]: Start difference. First operand 232 states and 281 transitions. Second operand 8 states. [2020-08-22 06:06:34,027 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:35,301 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:35,601 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:35,849 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 06:06:36,094 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 06:06:36,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:06:36,698 INFO L93 Difference]: Finished difference Result 711 states and 941 transitions. [2020-08-22 06:06:36,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 06:06:36,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 06:06:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:06:36,705 INFO L225 Difference]: With dead ends: 711 [2020-08-22 06:06:36,706 INFO L226 Difference]: Without dead ends: 503 [2020-08-22 06:06:36,709 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 [2020-08-22 06:06:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-08-22 06:06:36,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 437. [2020-08-22 06:06:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-22 06:06:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 543 transitions. [2020-08-22 06:06:36,817 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 543 transitions. Word has length 63 [2020-08-22 06:06:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:06:36,818 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 543 transitions. [2020-08-22 06:06:36,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 06:06:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 543 transitions. [2020-08-22 06:06:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 06:06:36,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:06:36,821 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] [2020-08-22 06:06:36,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:06:36,822 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:06:36,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:06:36,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1880541084, now seen corresponding path program 1 times [2020-08-22 06:06:36,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:06:36,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750493871] [2020-08-22 06:06:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:06:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:06:36,885 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:06:36,885 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:06:36,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 06:06:36,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:06:36 BoogieIcfgContainer [2020-08-22 06:06:36,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:06:36,914 INFO L168 Benchmark]: Toolchain (without parser) took 13347.80 ms. Allocated memory was 140.5 MB in the beginning and 464.0 MB in the end (delta: 323.5 MB). Free memory was 102.4 MB in the beginning and 284.0 MB in the end (delta: -181.6 MB). Peak memory consumption was 141.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:36,915 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 06:06:36,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.99 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 172.5 MB in the end (delta: -70.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:36,917 INFO L168 Benchmark]: Boogie Preprocessor took 87.85 ms. Allocated memory is still 204.5 MB. Free memory was 172.5 MB in the beginning and 166.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:36,918 INFO L168 Benchmark]: RCFGBuilder took 1107.89 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.7 MB in the beginning and 194.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:36,919 INFO L168 Benchmark]: TraceAbstraction took 11482.96 ms. Allocated memory was 236.5 MB in the beginning and 464.0 MB in the end (delta: 227.5 MB). Free memory was 194.8 MB in the beginning and 284.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 138.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:06:36,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.99 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 172.5 MB in the end (delta: -70.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.85 ms. Allocated memory is still 204.5 MB. Free memory was 172.5 MB in the beginning and 166.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1107.89 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.7 MB in the beginning and 194.8 MB in the end (delta: -28.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11482.96 ms. Allocated memory was 236.5 MB in the beginning and 464.0 MB in the end (delta: 227.5 MB). Free memory was 194.8 MB in the beginning and 284.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 138.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L49] int cleanupTimeShifts = 4; [L322] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L596] int pumpRunning = 0; [L597] int systemActive = 1; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L130] int retValue_acc ; [L131] int tmp ; [L135] FCALL select_helpers() [L136] FCALL select_features() [L137] CALL, EXPR valid_product() [L796] int retValue_acc ; [L799] retValue_acc = 1 [L800] return (retValue_acc); [L137] RET, EXPR valid_product() [L137] tmp = valid_product() [L139] COND TRUE \read(tmp) [L141] FCALL setup() [L142] CALL runTest() [L121] CALL test() [L522] int splverifierCounter ; [L523] int tmp ; [L524] int tmp___0 ; [L525] int tmp___1 ; [L526] int tmp___2 ; [L529] splverifierCounter = 0 [L531] COND TRUE 1 [L533] COND TRUE splverifierCounter < 4 [L539] tmp = __VERIFIER_nondet_int() [L541] COND TRUE \read(tmp) [L543] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L543] RET waterRise() [L549] tmp___0 = __VERIFIER_nondet_int() [L551] COND FALSE !(\read(tmp___0)) [L559] tmp___2 = __VERIFIER_nondet_int() [L561] COND FALSE !(\read(tmp___2)) [L567] tmp___1 = __VERIFIER_nondet_int() [L569] COND TRUE \read(tmp___1) [L571] CALL stopSystem() [L750] COND FALSE !(\read(pumpRunning)) [L757] systemActive = 0 [L571] RET stopSystem() [L578] CALL timeShift() [L604] COND FALSE !(\read(pumpRunning)) [L611] COND FALSE !(\read(systemActive)) [L619] CALL __utac_acc__Specification3_spec__1() [L887] int tmp ; [L888] int tmp___0 ; [L889] int tmp___1 ; [L893] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L893] RET, EXPR isMethaneLevelCritical() [L893] tmp = isMethaneLevelCritical() [L895] COND FALSE !(\read(tmp)) [L899] CALL, EXPR getWaterLevel() [L877] int retValue_acc ; [L880] retValue_acc = waterLevel [L881] return (retValue_acc); [L899] RET, EXPR getWaterLevel() [L899] tmp___0 = getWaterLevel() [L901] COND TRUE tmp___0 == 2 [L903] CALL, EXPR isPumpRunning() [L702] int retValue_acc ; [L705] retValue_acc = pumpRunning [L706] return (retValue_acc); [L903] RET, EXPR isPumpRunning() [L903] tmp___1 = isPumpRunning() [L905] COND FALSE !(\read(tmp___1)) [L909] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 224 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 8.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 443 SDtfs, 645 SDslu, 347 SDs, 0 SdLazy, 1677 SolverSat, 433 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s 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=437occurred 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, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s 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...