/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_product05.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:36:58,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:36:58,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:36:58,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:36:58,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:36:58,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:36:58,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:36:58,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:36:58,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:36:58,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:36:58,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:36:58,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:36:58,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:36:58,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:36:58,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:36:58,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:36:58,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:36:58,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:36:58,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:36:58,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:36:58,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:36:58,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:36:58,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:36:58,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:36:58,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:36:58,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:36:58,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:36:58,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:36:58,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:36:58,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:36:58,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:36:58,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:36:58,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:36:58,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:36:58,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:36:58,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:36:58,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:36:58,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:36:58,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:36:58,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:36:58,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:36:58,225 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 23:36:58,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:36:58,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:36:58,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:36:58,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:36:58,255 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:36:58,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:36:58,256 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:36:58,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:36:58,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:36:58,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:36:58,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:36:58,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:36:58,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:36:58,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:36:58,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:36:58,263 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:36:58,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:36:58,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:36:58,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:36:58,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:36:58,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:36:58,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:36:58,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:36:58,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:36:58,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:36:58,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:36:58,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:36:58,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:36:58,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:36:58,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:36:58,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:36:58,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:36:58,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:36:58,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:36:58,633 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:36:58,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-08-21 23:36:58,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64effa7a0/aff916a2e39f4387ab855f93c7c1546f/FLAG8fc885532 [2020-08-21 23:36:59,252 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:36:59,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product05.cil.c [2020-08-21 23:36:59,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64effa7a0/aff916a2e39f4387ab855f93c7c1546f/FLAG8fc885532 [2020-08-21 23:36:59,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64effa7a0/aff916a2e39f4387ab855f93c7c1546f [2020-08-21 23:36:59,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:36:59,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:36:59,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:36:59,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:36:59,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:36:59,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:36:59" (1/1) ... [2020-08-21 23:36:59,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c2ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:36:59, skipping insertion in model container [2020-08-21 23:36:59,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:36:59" (1/1) ... [2020-08-21 23:36:59,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:36:59,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:37:00,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:00,109 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:37:00,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:00,242 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:37:00,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00 WrapperNode [2020-08-21 23:37:00,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:00,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:37:00,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:37:00,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:37:00,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (1/1) ... [2020-08-21 23:37:00,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (1/1) ... [2020-08-21 23:37:00,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (1/1) ... [2020-08-21 23:37:00,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (1/1) ... [2020-08-21 23:37:00,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (1/1) ... [2020-08-21 23:37:00,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (1/1) ... [2020-08-21 23:37:00,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (1/1) ... [2020-08-21 23:37:00,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:37:00,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:37:00,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:37:00,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:37:00,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (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 23:37:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:37:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:37:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:37:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:37:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:37:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:37:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:37:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:37:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:37:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:37:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:37:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:37:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:37:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:37:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:37:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:37:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:37:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:37:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:37:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:37:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:37:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:37:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:37:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:37:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:37:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:37:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:37:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:37:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:37:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:37:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:37:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:37:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:37:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:37:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:37:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:37:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:37:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:37:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:37:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:37:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:37:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:37:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:37:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:37:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:37:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:37:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:37:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:37:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:37:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:37:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:37:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:37:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:37:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:37:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:37:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:37:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:37:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:37:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:37:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:37:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:37:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:37:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:37:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:37:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:37:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:37:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:37:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:37:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:37:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:37:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:37:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:37:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:37:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:37:01,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:37:01,549 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:37:01,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:37:01 BoogieIcfgContainer [2020-08-21 23:37:01,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:37:01,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:37:01,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:37:01,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:37:01,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:36:59" (1/3) ... [2020-08-21 23:37:01,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36576ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:37:01, skipping insertion in model container [2020-08-21 23:37:01,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:00" (2/3) ... [2020-08-21 23:37:01,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36576ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:37:01, skipping insertion in model container [2020-08-21 23:37:01,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:37:01" (3/3) ... [2020-08-21 23:37:01,571 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product05.cil.c [2020-08-21 23:37:01,582 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:37:01,592 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:37:01,606 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:37:01,634 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:37:01,634 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:37:01,634 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:37:01,635 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:37:01,635 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:37:01,635 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:37:01,635 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:37:01,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:37:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-08-21 23:37:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:37:01,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:01,669 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 23:37:01,670 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash 385551815, now seen corresponding path program 1 times [2020-08-21 23:37:01,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:01,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631586727] [2020-08-21 23:37:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,338 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:02,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:37:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:37:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:02,473 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 23:37:02,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631586727] [2020-08-21 23:37:02,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:02,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:37:02,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2837467] [2020-08-21 23:37:02,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:37:02,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:02,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:37:02,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:37:02,507 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-08-21 23:37:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:03,676 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-21 23:37:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:37:03,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 23:37:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:03,695 INFO L225 Difference]: With dead ends: 249 [2020-08-21 23:37:03,695 INFO L226 Difference]: Without dead ends: 135 [2020-08-21 23:37:03,700 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 23:37:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-21 23:37:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-21 23:37:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 23:37:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-21 23:37:03,801 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 52 [2020-08-21 23:37:03,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:03,802 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-21 23:37:03,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:37:03,802 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-21 23:37:03,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 23:37:03,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:03,810 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 23:37:03,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:37:03,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:03,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:03,811 INFO L82 PathProgramCache]: Analyzing trace with hash 881400109, now seen corresponding path program 1 times [2020-08-21 23:37:03,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:03,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391361839] [2020-08-21 23:37:03,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,184 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:37:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:37:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:37:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:04,228 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 23:37:04,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391361839] [2020-08-21 23:37:04,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:04,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:37:04,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941189534] [2020-08-21 23:37:04,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:37:04,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:04,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:37:04,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:37:04,232 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-21 23:37:04,683 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:05,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:05,341 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-21 23:37:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:37:05,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 23:37:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:05,345 INFO L225 Difference]: With dead ends: 182 [2020-08-21 23:37:05,345 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 23:37:05,347 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 23:37:05,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 23:37:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 23:37:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 23:37:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-21 23:37:05,377 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 53 [2020-08-21 23:37:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:05,378 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-21 23:37:05,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:37:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-21 23:37:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 23:37:05,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:05,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:05,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:37:05,381 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:05,381 INFO L82 PathProgramCache]: Analyzing trace with hash 633168041, now seen corresponding path program 1 times [2020-08-21 23:37:05,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:05,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984922817] [2020-08-21 23:37:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,694 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:37:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:37:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:37:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:05,796 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 23:37:05,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984922817] [2020-08-21 23:37:05,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:05,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:37:05,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033043713] [2020-08-21 23:37:05,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:37:05,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:05,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:37:05,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:37:05,799 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-21 23:37:06,154 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:06,483 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:06,723 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:06,944 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:07,848 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-21 23:37:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:37:07,851 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 23:37:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:07,853 INFO L225 Difference]: With dead ends: 191 [2020-08-21 23:37:07,853 INFO L226 Difference]: Without dead ends: 119 [2020-08-21 23:37:07,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:37:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-21 23:37:07,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-21 23:37:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 23:37:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-21 23:37:07,886 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 57 [2020-08-21 23:37:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:07,887 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-21 23:37:07,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:37:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-21 23:37:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 23:37:07,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:07,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:07,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:37:07,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:07,890 INFO L82 PathProgramCache]: Analyzing trace with hash 119188522, now seen corresponding path program 1 times [2020-08-21 23:37:07,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:07,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714135724] [2020-08-21 23:37:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,190 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 23:37:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:37:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 23:37:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 23:37:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:08,314 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 23:37:08,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714135724] [2020-08-21 23:37:08,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:08,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:37:08,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977049739] [2020-08-21 23:37:08,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:37:08,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:08,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:37:08,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:37:08,317 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 8 states. [2020-08-21 23:37:08,670 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:09,931 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:10,212 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:10,436 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:10,783 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:11,055 INFO L93 Difference]: Finished difference Result 284 states and 375 transitions. [2020-08-21 23:37:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:37:11,055 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-08-21 23:37:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:11,060 INFO L225 Difference]: With dead ends: 284 [2020-08-21 23:37:11,060 INFO L226 Difference]: Without dead ends: 212 [2020-08-21 23:37:11,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 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 23:37:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-21 23:37:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 166. [2020-08-21 23:37:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-21 23:37:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 197 transitions. [2020-08-21 23:37:11,139 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 197 transitions. Word has length 65 [2020-08-21 23:37:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:11,140 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 197 transitions. [2020-08-21 23:37:11,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:37:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 197 transitions. [2020-08-21 23:37:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-21 23:37:11,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:11,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:11,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:37:11,143 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:11,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash 2068866518, now seen corresponding path program 1 times [2020-08-21 23:37:11,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:11,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207585941] [2020-08-21 23:37:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,426 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 23:37:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:37:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:37:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 23:37:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 23:37:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 23:37:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:11,530 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 23:37:11,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207585941] [2020-08-21 23:37:11,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:11,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:37:11,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624759437] [2020-08-21 23:37:11,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:37:11,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:11,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:37:11,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:37:11,537 INFO L87 Difference]: Start difference. First operand 166 states and 197 transitions. Second operand 6 states. [2020-08-21 23:37:11,872 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:12,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:12,319 INFO L93 Difference]: Finished difference Result 279 states and 345 transitions. [2020-08-21 23:37:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:37:12,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-08-21 23:37:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:12,322 INFO L225 Difference]: With dead ends: 279 [2020-08-21 23:37:12,322 INFO L226 Difference]: Without dead ends: 137 [2020-08-21 23:37:12,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:37:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-21 23:37:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-08-21 23:37:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-21 23:37:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-08-21 23:37:12,379 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 73 [2020-08-21 23:37:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:12,380 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-08-21 23:37:12,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:37:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-08-21 23:37:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 23:37:12,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:12,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:12,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:37:12,382 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash -760855184, now seen corresponding path program 1 times [2020-08-21 23:37:12,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:12,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513369089] [2020-08-21 23:37:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:37:12,465 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:37:12,465 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:37:12,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:37:12,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:37:12 BoogieIcfgContainer [2020-08-21 23:37:12,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:37:12,509 INFO L168 Benchmark]: Toolchain (without parser) took 12897.12 ms. Allocated memory was 138.9 MB in the beginning and 456.7 MB in the end (delta: 317.7 MB). Free memory was 100.7 MB in the beginning and 119.2 MB in the end (delta: -18.4 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:12,512 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 23:37:12,520 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.66 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 168.4 MB in the end (delta: -67.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:12,521 INFO L168 Benchmark]: Boogie Preprocessor took 102.84 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:12,526 INFO L168 Benchmark]: RCFGBuilder took 1212.23 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 164.4 MB in the beginning and 198.2 MB in the end (delta: -33.8 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:12,526 INFO L168 Benchmark]: TraceAbstraction took 10941.50 ms. Allocated memory was 234.4 MB in the beginning and 456.7 MB in the end (delta: 222.3 MB). Free memory was 198.2 MB in the beginning and 119.2 MB in the end (delta: 79.0 MB). Peak memory consumption was 301.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:12,536 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.66 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 100.5 MB in the beginning and 168.4 MB in the end (delta: -67.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.84 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 164.4 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1212.23 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 164.4 MB in the beginning and 198.2 MB in the end (delta: -33.8 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10941.50 ms. Allocated memory was 234.4 MB in the beginning and 456.7 MB in the end (delta: 222.3 MB). Free memory was 198.2 MB in the beginning and 119.2 MB in the end (delta: 79.0 MB). Peak memory consumption was 301.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 82]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L95] int pumpRunning = 0; [L96] int systemActive = 1; [L297] int cleanupTimeShifts = 4; [L562] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; [L370] int retValue_acc ; [L371] int tmp ; [L375] FCALL select_helpers() [L376] FCALL select_features() [L377] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L377] RET, EXPR valid_product() [L377] tmp = valid_product() [L379] COND TRUE \read(tmp) [L381] FCALL setup() [L382] CALL runTest() [L364] CALL test() [L233] int splverifierCounter ; [L234] int tmp ; [L235] int tmp___0 ; [L236] int tmp___1 ; [L237] int tmp___2 ; [L240] splverifierCounter = 0 [L242] COND TRUE 1 [L244] COND TRUE splverifierCounter < 4 [L250] tmp = __VERIFIER_nondet_int() [L252] COND TRUE \read(tmp) [L254] CALL waterRise() [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 [L254] RET waterRise() [L260] tmp___0 = __VERIFIER_nondet_int() [L262] COND FALSE !(\read(tmp___0)) [L270] tmp___2 = __VERIFIER_nondet_int() [L272] COND TRUE \read(tmp___2) [L285] CALL timeShift() [L103] COND FALSE !(\read(pumpRunning)) [L110] COND TRUE \read(systemActive) [L112] CALL processEnvironment() [L132] int tmp ; [L135] COND FALSE !(\read(pumpRunning)) [L150] FCALL processEnvironment__wrappee__base() [L112] RET processEnvironment() [L118] CALL __utac_acc__Specification3_spec__1() [L841] int tmp ; [L842] int tmp___0 ; [L843] int tmp___1 ; [L847] CALL, EXPR isMethaneLevelCritical() [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); [L847] RET, EXPR isMethaneLevelCritical() [L847] tmp = isMethaneLevelCritical() [L849] COND FALSE !(\read(tmp)) [L853] CALL, EXPR getWaterLevel() [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); [L853] RET, EXPR getWaterLevel() [L853] tmp___0 = getWaterLevel() [L855] COND TRUE tmp___0 == 2 [L857] CALL, EXPR isPumpRunning() [L184] int retValue_acc ; [L187] retValue_acc = pumpRunning [L188] return (retValue_acc); [L857] RET, EXPR isPumpRunning() [L857] tmp___1 = isPumpRunning() [L859] COND FALSE !(\read(tmp___1)) [L863] CALL __automaton_fail() [L82] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 430 SDtfs, 689 SDslu, 233 SDs, 0 SdLazy, 1249 SolverSat, 421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 84162 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...