/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:58:14,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:58:14,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:58:14,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:58:14,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:58:14,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:58:14,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:58:14,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:58:14,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:58:14,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:58:14,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:58:14,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:58:14,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:58:14,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:58:14,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:58:14,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:58:14,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:58:14,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:58:14,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:58:14,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:58:14,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:58:14,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:58:14,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:58:14,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:58:14,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:58:14,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:58:14,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:58:14,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:58:14,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:58:14,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:58:14,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:58:14,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:58:14,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:58:14,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:58:14,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:58:14,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:58:14,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:58:14,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:58:14,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:58:14,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:58:14,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:58:14,239 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 [2020-08-18 11:58:14,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:58:14,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:58:14,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:58:14,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:58:14,294 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:58:14,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:58:14,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:58:14,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:58:14,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:58:14,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:58:14,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:58:14,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:58:14,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:58:14,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:58:14,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:58:14,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:58:14,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:58:14,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:58:14,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:58:14,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:58:14,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:58:14,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:58:14,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:58:14,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:58:14,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:58:14,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:58:14,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:58:14,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:58:14,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:58:14,302 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=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:58:14,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:58:14,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:58:14,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:58:14,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:58:14,641 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:58:14,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-08-18 11:58:14,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d5af69f/f05f8bff18a846d4b1a279ceb4db33a5/FLAG023d444cb [2020-08-18 11:58:15,233 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:58:15,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-08-18 11:58:15,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d5af69f/f05f8bff18a846d4b1a279ceb4db33a5/FLAG023d444cb [2020-08-18 11:58:15,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d5af69f/f05f8bff18a846d4b1a279ceb4db33a5 [2020-08-18 11:58:15,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:58:15,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:58:15,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:58:15,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:58:15,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:58:15,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:58:15" (1/1) ... [2020-08-18 11:58:15,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43518757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:15, skipping insertion in model container [2020-08-18 11:58:15,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:58:15" (1/1) ... [2020-08-18 11:58:15,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:58:15,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:58:15,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:58:15,982 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:58:16,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:58:16,153 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:58:16,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16 WrapperNode [2020-08-18 11:58:16,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:58:16,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:58:16,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:58:16,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:58:16,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (1/1) ... [2020-08-18 11:58:16,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (1/1) ... [2020-08-18 11:58:16,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (1/1) ... [2020-08-18 11:58:16,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (1/1) ... [2020-08-18 11:58:16,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (1/1) ... [2020-08-18 11:58:16,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (1/1) ... [2020-08-18 11:58:16,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (1/1) ... [2020-08-18 11:58:16,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:58:16,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:58:16,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:58:16,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:58:16,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (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 [2020-08-18 11:58:16,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:58:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:58:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:58:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:58:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:58:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:58:16,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:58:16,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:58:16,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:58:16,312 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:58:16,312 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:58:16,312 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:58:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:58:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:58:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:58:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 11:58:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:58:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:58:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:58:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:58:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:58:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:58:16,314 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:58:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:58:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:58:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:58:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 11:58:16,315 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:58:16,316 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:58:16,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:58:16,316 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:58:16,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:58:16,316 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:58:16,317 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:58:16,317 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:58:16,317 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:58:16,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:58:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:58:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:58:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:58:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:58:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:58:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:58:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:58:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:58:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:58:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:58:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:58:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:58:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:58:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:58:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:58:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:58:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:58:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:58:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:58:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:58:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:58:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:58:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:58:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:58:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:58:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:58:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 11:58:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:58:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:58:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:58:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:58:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:58:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:58:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:58:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:58:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 11:58:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:58:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:58:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 11:58:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:58:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:58:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:58:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:58:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:58:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:58:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:58:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:58:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:58:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:58:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:58:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:58:17,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:58:17,380 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:58:17,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:58:17 BoogieIcfgContainer [2020-08-18 11:58:17,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:58:17,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:58:17,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:58:17,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:58:17,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:58:15" (1/3) ... [2020-08-18 11:58:17,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b88fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:58:17, skipping insertion in model container [2020-08-18 11:58:17,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:58:16" (2/3) ... [2020-08-18 11:58:17,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b88fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:58:17, skipping insertion in model container [2020-08-18 11:58:17,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:58:17" (3/3) ... [2020-08-18 11:58:17,400 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2020-08-18 11:58:17,412 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:58:17,420 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:58:17,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:58:17,457 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:58:17,457 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:58:17,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:58:17,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:58:17,458 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:58:17,458 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:58:17,458 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:58:17,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:58:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-08-18 11:58:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:58:17,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:17,493 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] [2020-08-18 11:58:17,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1926070200, now seen corresponding path program 1 times [2020-08-18 11:58:17,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:17,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375394189] [2020-08-18 11:58:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,132 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:18,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:58:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:58:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:58:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:18,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375394189] [2020-08-18 11:58:18,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:18,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:58:18,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288099686] [2020-08-18 11:58:18,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:58:18,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:18,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:58:18,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:58:18,317 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-08-18 11:58:19,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:19,356 INFO L93 Difference]: Finished difference Result 259 states and 341 transitions. [2020-08-18 11:58:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:58:19,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 11:58:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:19,373 INFO L225 Difference]: With dead ends: 259 [2020-08-18 11:58:19,374 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 11:58:19,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:58:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 11:58:19,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-08-18 11:58:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-18 11:58:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2020-08-18 11:58:19,505 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 52 [2020-08-18 11:58:19,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:19,506 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2020-08-18 11:58:19,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:58:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2020-08-18 11:58:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 11:58:19,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:19,516 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] [2020-08-18 11:58:19,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:58:19,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:19,517 INFO L82 PathProgramCache]: Analyzing trace with hash 475112747, now seen corresponding path program 1 times [2020-08-18 11:58:19,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:19,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549086572] [2020-08-18 11:58:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,857 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:58:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:58:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:58:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:19,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549086572] [2020-08-18 11:58:19,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:19,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:58:19,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177960628] [2020-08-18 11:58:19,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:58:19,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:19,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:58:19,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:58:19,930 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand 4 states. [2020-08-18 11:58:20,305 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:58:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:20,963 INFO L93 Difference]: Finished difference Result 192 states and 232 transitions. [2020-08-18 11:58:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:58:20,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 11:58:20,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:20,967 INFO L225 Difference]: With dead ends: 192 [2020-08-18 11:58:20,967 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 11:58:20,969 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 [2020-08-18 11:58:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 11:58:21,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-08-18 11:58:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-18 11:58:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-08-18 11:58:21,003 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 53 [2020-08-18 11:58:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:21,003 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-08-18 11:58:21,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:58:21,004 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-08-18 11:58:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 11:58:21,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:21,006 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] [2020-08-18 11:58:21,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:58:21,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:21,006 INFO L82 PathProgramCache]: Analyzing trace with hash 40226853, now seen corresponding path program 1 times [2020-08-18 11:58:21,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:21,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038362930] [2020-08-18 11:58:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,323 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:58:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:58:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:58:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:21,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038362930] [2020-08-18 11:58:21,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:21,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:21,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049658398] [2020-08-18 11:58:21,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:21,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:21,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:21,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:21,429 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 8 states. [2020-08-18 11:58:21,786 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:22,084 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:22,333 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:22,571 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:23,467 INFO L93 Difference]: Finished difference Result 201 states and 246 transitions. [2020-08-18 11:58:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:58:23,470 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 11:58:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:23,472 INFO L225 Difference]: With dead ends: 201 [2020-08-18 11:58:23,473 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 11:58:23,474 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 [2020-08-18 11:58:23,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 11:58:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-08-18 11:58:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-18 11:58:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-08-18 11:58:23,502 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 57 [2020-08-18 11:58:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:23,502 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-08-18 11:58:23,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:58:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-08-18 11:58:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 11:58:23,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:23,504 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] [2020-08-18 11:58:23,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:58:23,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1164680110, now seen corresponding path program 1 times [2020-08-18 11:58:23,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:23,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135490800] [2020-08-18 11:58:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,765 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:23,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:58:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:58:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:58:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:58:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:23,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135490800] [2020-08-18 11:58:23,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:23,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:58:23,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88488665] [2020-08-18 11:58:23,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:58:23,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:58:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:58:23,850 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states. [2020-08-18 11:58:24,184 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:25,362 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:25,692 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:25,952 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:58:26,214 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:26,748 INFO L93 Difference]: Finished difference Result 299 states and 390 transitions. [2020-08-18 11:58:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:58:26,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-08-18 11:58:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:26,754 INFO L225 Difference]: With dead ends: 299 [2020-08-18 11:58:26,754 INFO L226 Difference]: Without dead ends: 222 [2020-08-18 11:58:26,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:58:26,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-08-18 11:58:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176. [2020-08-18 11:58:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-18 11:58:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 207 transitions. [2020-08-18 11:58:26,812 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 207 transitions. Word has length 65 [2020-08-18 11:58:26,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:26,813 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 207 transitions. [2020-08-18 11:58:26,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:58:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 207 transitions. [2020-08-18 11:58:26,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 11:58:26,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:26,815 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] [2020-08-18 11:58:26,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:58:26,815 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:26,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1251292780, now seen corresponding path program 1 times [2020-08-18 11:58:26,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:26,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633624635] [2020-08-18 11:58:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,109 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:58:27,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:58:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:58:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:58:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:58:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:58:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:58:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:58:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:58:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 11:58:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 11:58:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 11:58:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:58:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:58:27,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633624635] [2020-08-18 11:58:27,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:58:27,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:58:27,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614396101] [2020-08-18 11:58:27,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:58:27,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:58:27,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:58:27,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:58:27,195 INFO L87 Difference]: Start difference. First operand 176 states and 207 transitions. Second operand 6 states. [2020-08-18 11:58:27,512 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:58:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:58:28,005 INFO L93 Difference]: Finished difference Result 289 states and 355 transitions. [2020-08-18 11:58:28,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 11:58:28,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-18 11:58:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:58:28,008 INFO L225 Difference]: With dead ends: 289 [2020-08-18 11:58:28,008 INFO L226 Difference]: Without dead ends: 137 [2020-08-18 11:58:28,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:58:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-18 11:58:28,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-08-18 11:58:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 11:58:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-08-18 11:58:28,041 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 69 [2020-08-18 11:58:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:58:28,042 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-08-18 11:58:28,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:58:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-08-18 11:58:28,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 11:58:28,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:58:28,044 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] [2020-08-18 11:58:28,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:58:28,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:58:28,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:58:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash 558485620, now seen corresponding path program 1 times [2020-08-18 11:58:28,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:58:28,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659115391] [2020-08-18 11:58:28,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:58:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:58:28,097 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:58:28,097 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:58:28,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:58:28,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:58:28 BoogieIcfgContainer [2020-08-18 11:58:28,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:58:28,126 INFO L168 Benchmark]: Toolchain (without parser) took 12596.02 ms. Allocated memory was 140.0 MB in the beginning and 411.6 MB in the end (delta: 271.6 MB). Free memory was 101.9 MB in the beginning and 102.2 MB in the end (delta: -330.3 kB). Peak memory consumption was 271.3 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:28,127 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 11:58:28,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.07 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 170.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:28,129 INFO L168 Benchmark]: Boogie Preprocessor took 93.10 ms. Allocated memory is still 203.9 MB. Free memory was 170.9 MB in the beginning and 165.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:28,130 INFO L168 Benchmark]: RCFGBuilder took 1141.68 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 165.0 MB in the beginning and 194.1 MB in the end (delta: -29.2 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:28,131 INFO L168 Benchmark]: TraceAbstraction took 10732.99 ms. Allocated memory was 235.9 MB in the beginning and 411.6 MB in the end (delta: 175.6 MB). Free memory was 194.1 MB in the beginning and 102.2 MB in the end (delta: 92.0 MB). Peak memory consumption was 267.6 MB. Max. memory is 7.1 GB. [2020-08-18 11:58:28,135 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.07 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.6 MB in the beginning and 170.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.10 ms. Allocated memory is still 203.9 MB. Free memory was 170.9 MB in the beginning and 165.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1141.68 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 165.0 MB in the beginning and 194.1 MB in the end (delta: -29.2 MB). Peak memory consumption was 80.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10732.99 ms. Allocated memory was 235.9 MB in the beginning and 411.6 MB in the end (delta: 175.6 MB). Free memory was 194.1 MB in the beginning and 102.2 MB in the end (delta: 92.0 MB). Peak memory consumption was 267.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L735] int cleanupTimeShifts = 4; [L811] int retValue_acc ; [L812] int tmp ; [L816] FCALL select_helpers() [L817] FCALL select_features() [L818] CALL, EXPR valid_product() [L860] int retValue_acc ; [L863] retValue_acc = 1 [L864] return (retValue_acc); [L818] RET, EXPR valid_product() [L818] tmp = valid_product() [L820] COND TRUE \read(tmp) [L822] FCALL setup() [L823] CALL runTest() [L802] CALL test() [L514] int splverifierCounter ; [L515] int tmp ; [L516] int tmp___0 ; [L517] int tmp___1 ; [L518] int tmp___2 ; [L521] splverifierCounter = 0 [L523] COND TRUE 1 [L525] COND TRUE splverifierCounter < 4 [L531] tmp = __VERIFIER_nondet_int() [L533] COND TRUE \read(tmp) [L535] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L535] RET waterRise() [L541] tmp___0 = __VERIFIER_nondet_int() [L543] COND FALSE !(\read(tmp___0)) [L551] tmp___2 = __VERIFIER_nondet_int() [L553] COND TRUE \read(tmp___2) [L566] CALL timeShift() [L590] COND FALSE !(\read(pumpRunning)) [L597] COND TRUE \read(systemActive) [L599] CALL processEnvironment() [L619] int tmp ; [L622] COND FALSE !(\read(pumpRunning)) [L637] FCALL processEnvironment__wrappee__base() [L599] RET processEnvironment() [L605] CALL __utac_acc__Specification3_spec__1() [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L876] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L876] RET, EXPR isMethaneLevelCritical() [L876] tmp = isMethaneLevelCritical() [L878] COND FALSE !(\read(tmp)) [L882] CALL, EXPR getWaterLevel() [L484] int retValue_acc ; [L487] retValue_acc = waterLevel [L488] return (retValue_acc); [L882] RET, EXPR getWaterLevel() [L882] tmp___0 = getWaterLevel() [L884] COND TRUE tmp___0 == 2 [L886] CALL, EXPR isPumpRunning() [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); [L886] RET, EXPR isPumpRunning() [L886] tmp___1 = isPumpRunning() [L888] COND FALSE !(\read(tmp___1)) [L892] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 444 SDtfs, 684 SDslu, 242 SDs, 0 SdLazy, 1325 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred 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, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 82382 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...