/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=0.2 --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_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:49:11,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:49:11,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:49:11,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:49:11,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:49:11,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:49:11,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:49:11,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:49:11,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:49:11,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:49:11,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:49:11,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:49:11,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:49:11,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:49:11,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:49:11,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:49:11,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:49:11,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:49:11,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:49:11,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:49:11,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:49:11,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:49:11,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:49:11,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:49:11,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:49:11,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:49:11,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:49:11,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:49:11,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:49:11,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:49:11,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:49:11,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:49:11,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:49:11,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:49:11,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:49:11,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:49:11,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:49:11,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:49:11,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:49:11,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:49:11,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:49:11,353 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 22:49:11,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:49:11,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:49:11,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:49:11,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:49:11,395 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:49:11,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:49:11,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:49:11,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:49:11,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:49:11,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:49:11,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:49:11,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:49:11,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:49:11,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:49:11,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:49:11,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:49:11,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:49:11,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:49:11,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:49:11,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:49:11,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:49:11,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:49:11,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:49:11,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:49:11,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:49:11,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:49:11,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:49:11,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:49:11,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:49:11,401 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-21 22:49:11,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:49:11,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:49:11,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:49:11,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:49:11,743 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:49:11,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-08-21 22:49:11,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94d8fe6d2/82186de1efcf4d3b8654640e7ecc83d5/FLAG3d498eba6 [2020-08-21 22:49:12,257 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:49:12,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-08-21 22:49:12,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94d8fe6d2/82186de1efcf4d3b8654640e7ecc83d5/FLAG3d498eba6 [2020-08-21 22:49:12,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94d8fe6d2/82186de1efcf4d3b8654640e7ecc83d5 [2020-08-21 22:49:12,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:49:12,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:49:12,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:49:12,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:49:12,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:49:12,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:49:12" (1/1) ... [2020-08-21 22:49:12,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b98b76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:12, skipping insertion in model container [2020-08-21 22:49:12,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:49:12" (1/1) ... [2020-08-21 22:49:12,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:49:12,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:49:13,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:49:13,073 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:49:13,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:49:13,269 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:49:13,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13 WrapperNode [2020-08-21 22:49:13,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:49:13,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:49:13,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:49:13,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:49:13,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (1/1) ... [2020-08-21 22:49:13,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (1/1) ... [2020-08-21 22:49:13,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (1/1) ... [2020-08-21 22:49:13,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (1/1) ... [2020-08-21 22:49:13,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (1/1) ... [2020-08-21 22:49:13,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (1/1) ... [2020-08-21 22:49:13,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (1/1) ... [2020-08-21 22:49:13,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:49:13,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:49:13,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:49:13,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:49:13,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (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 22:49:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:49:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:49:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:49:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:49:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:49:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:49:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:49:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:49:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:49:13,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 22:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:49:13,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:49:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:49:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:49:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:49:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:49:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:49:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 22:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:49:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:49:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 22:49:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:49:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:49:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:49:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:49:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:49:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:49:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:49:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:49:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:49:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:49:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:49:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:49:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:49:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:49:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:49:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:49:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:49:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:49:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:49:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:49:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 22:49:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:49:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:49:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:49:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:49:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:49:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:49:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:49:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:49:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:49:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:49:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 22:49:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:49:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:49:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 22:49:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 22:49:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:49:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 22:49:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:49:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:49:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:49:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:49:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:49:14,514 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:49:14,514 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:49:14,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:49:14 BoogieIcfgContainer [2020-08-21 22:49:14,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:49:14,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:49:14,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:49:14,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:49:14,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:49:12" (1/3) ... [2020-08-21 22:49:14,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a1e27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:49:14, skipping insertion in model container [2020-08-21 22:49:14,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:49:13" (2/3) ... [2020-08-21 22:49:14,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a1e27e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:49:14, skipping insertion in model container [2020-08-21 22:49:14,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:49:14" (3/3) ... [2020-08-21 22:49:14,528 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product31.cil.c [2020-08-21 22:49:14,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:49:14,548 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:49:14,563 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:49:14,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:49:14,590 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:49:14,590 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:49:14,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:49:14,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:49:14,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:49:14,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:49:14,591 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:49:14,615 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-21 22:49:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:49:14,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:14,628 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 22:49:14,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:14,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:14,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2139663592, now seen corresponding path program 1 times [2020-08-21 22:49:14,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:14,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942129611] [2020-08-21 22:49:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,352 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:15,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:49:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:49:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:49:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:15,458 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 22:49:15,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942129611] [2020-08-21 22:49:15,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:15,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:49:15,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637074747] [2020-08-21 22:49:15,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:49:15,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:15,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:49:15,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:49:15,489 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-21 22:49:16,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:16,711 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-08-21 22:49:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:49:16,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 22:49:16,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:16,729 INFO L225 Difference]: With dead ends: 305 [2020-08-21 22:49:16,729 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 22:49:16,734 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 22:49:16,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 22:49:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-21 22:49:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-21 22:49:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-08-21 22:49:16,826 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-08-21 22:49:16,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:16,827 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-08-21 22:49:16,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:49:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-08-21 22:49:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 22:49:16,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:16,831 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 22:49:16,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:49:16,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:16,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:16,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1114338562, now seen corresponding path program 1 times [2020-08-21 22:49:16,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:16,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43440871] [2020-08-21 22:49:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,199 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:17,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:49:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:49:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 22:49:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:17,246 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 22:49:17,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43440871] [2020-08-21 22:49:17,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:17,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:49:17,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15001914] [2020-08-21 22:49:17,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:49:17,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:17,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:49:17,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:49:17,250 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-08-21 22:49:17,615 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:49:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:18,549 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-08-21 22:49:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:49:18,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 22:49:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:18,554 INFO L225 Difference]: With dead ends: 232 [2020-08-21 22:49:18,554 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 22:49:18,556 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 22:49:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 22:49:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-08-21 22:49:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-21 22:49:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-08-21 22:49:18,622 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-08-21 22:49:18,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:18,622 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-08-21 22:49:18,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:49:18,623 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-08-21 22:49:18,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 22:49:18,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:18,626 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 22:49:18,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:49:18,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:18,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1063304095, now seen corresponding path program 1 times [2020-08-21 22:49:18,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:18,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432005246] [2020-08-21 22:49:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:18,998 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:19,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:19,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:19,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:19,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:49:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:19,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:49:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:19,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:49:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:19,084 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 22:49:19,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432005246] [2020-08-21 22:49:19,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:19,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:49:19,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138874202] [2020-08-21 22:49:19,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:49:19,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:19,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:49:19,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:49:19,087 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2020-08-21 22:49:19,425 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:49:19,777 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:20,040 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:20,280 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:21,029 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:49:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:22,933 INFO L93 Difference]: Finished difference Result 424 states and 531 transitions. [2020-08-21 22:49:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:49:22,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 22:49:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:22,941 INFO L225 Difference]: With dead ends: 424 [2020-08-21 22:49:22,942 INFO L226 Difference]: Without dead ends: 326 [2020-08-21 22:49:22,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:49:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-21 22:49:23,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-21 22:49:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-21 22:49:23,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 327 transitions. [2020-08-21 22:49:23,015 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 327 transitions. Word has length 57 [2020-08-21 22:49:23,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:23,016 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 327 transitions. [2020-08-21 22:49:23,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:49:23,016 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 327 transitions. [2020-08-21 22:49:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 22:49:23,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:23,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:49:23,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:49:23,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:23,020 INFO L82 PathProgramCache]: Analyzing trace with hash 248297521, now seen corresponding path program 1 times [2020-08-21 22:49:23,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:23,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363967213] [2020-08-21 22:49:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,337 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:49:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:49:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:49:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 22:49:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:23,412 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 22:49:23,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363967213] [2020-08-21 22:49:23,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:23,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:49:23,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607879874] [2020-08-21 22:49:23,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:49:23,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:23,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:49:23,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:49:23,416 INFO L87 Difference]: Start difference. First operand 268 states and 327 transitions. Second operand 8 states. [2020-08-21 22:49:23,762 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:49:25,134 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:25,498 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:25,764 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:49:26,070 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:49:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:26,736 INFO L93 Difference]: Finished difference Result 824 states and 1085 transitions. [2020-08-21 22:49:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 22:49:26,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 22:49:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:26,743 INFO L225 Difference]: With dead ends: 824 [2020-08-21 22:49:26,743 INFO L226 Difference]: Without dead ends: 580 [2020-08-21 22:49:26,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:49:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-08-21 22:49:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 513. [2020-08-21 22:49:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-21 22:49:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2020-08-21 22:49:26,862 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 63 [2020-08-21 22:49:26,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:26,863 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2020-08-21 22:49:26,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:49:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2020-08-21 22:49:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 22:49:26,868 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:26,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:49:26,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:49:26,869 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:26,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:26,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1905140809, now seen corresponding path program 1 times [2020-08-21 22:49:26,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:26,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049655990] [2020-08-21 22:49:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,161 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:49:27,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:49:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:49:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:49:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:49:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:49:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:49:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:49:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:49:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:49:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 22:49:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:49:27,278 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 22:49:27,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049655990] [2020-08-21 22:49:27,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:49:27,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:49:27,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869686453] [2020-08-21 22:49:27,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:49:27,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:49:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:49:27,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:49:27,284 INFO L87 Difference]: Start difference. First operand 513 states and 641 transitions. Second operand 6 states. [2020-08-21 22:49:27,611 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:49:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:49:28,343 INFO L93 Difference]: Finished difference Result 845 states and 1092 transitions. [2020-08-21 22:49:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 22:49:28,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-21 22:49:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:49:28,347 INFO L225 Difference]: With dead ends: 845 [2020-08-21 22:49:28,347 INFO L226 Difference]: Without dead ends: 356 [2020-08-21 22:49:28,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:49:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-08-21 22:49:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 335. [2020-08-21 22:49:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-21 22:49:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 386 transitions. [2020-08-21 22:49:28,416 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 386 transitions. Word has length 67 [2020-08-21 22:49:28,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:49:28,417 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 386 transitions. [2020-08-21 22:49:28,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:49:28,417 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 386 transitions. [2020-08-21 22:49:28,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 22:49:28,419 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:49:28,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:49:28,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:49:28,419 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:49:28,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:49:28,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1719041065, now seen corresponding path program 1 times [2020-08-21 22:49:28,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:49:28,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580011355] [2020-08-21 22:49:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:49:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:49:28,507 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:49:28,507 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:49:28,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:49:28,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:49:28 BoogieIcfgContainer [2020-08-21 22:49:28,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:49:28,538 INFO L168 Benchmark]: Toolchain (without parser) took 15958.16 ms. Allocated memory was 140.5 MB in the beginning and 508.0 MB in the end (delta: 367.5 MB). Free memory was 102.6 MB in the beginning and 466.3 MB in the end (delta: -363.8 MB). Peak memory consumption was 341.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:28,539 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 22:49:28,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.08 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 173.7 MB in the end (delta: -71.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:28,540 INFO L168 Benchmark]: Boogie Preprocessor took 84.07 ms. Allocated memory is still 205.0 MB. Free memory was 173.7 MB in the beginning and 169.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:28,541 INFO L168 Benchmark]: RCFGBuilder took 1164.49 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.7 MB in the beginning and 194.3 MB in the end (delta: -24.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:28,542 INFO L168 Benchmark]: TraceAbstraction took 14014.96 ms. Allocated memory was 235.4 MB in the beginning and 508.0 MB in the end (delta: 272.6 MB). Free memory was 194.3 MB in the beginning and 466.3 MB in the end (delta: -272.0 MB). Peak memory consumption was 338.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:49:28,546 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 140.5 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 690.08 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 173.7 MB in the end (delta: -71.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.07 ms. Allocated memory is still 205.0 MB. Free memory was 173.7 MB in the beginning and 169.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1164.49 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.7 MB in the beginning and 194.3 MB in the end (delta: -24.6 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14014.96 ms. Allocated memory was 235.4 MB in the beginning and 508.0 MB in the end (delta: 272.6 MB). Free memory was 194.3 MB in the beginning and 466.3 MB in the end (delta: -272.0 MB). Peak memory consumption was 338.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 140]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L314] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L585] int pumpRunning = 0; [L586] int systemActive = 1; [L868] int cleanupTimeShifts = 4; [L941] int retValue_acc ; [L942] int tmp ; [L946] FCALL select_helpers() [L947] FCALL select_features() [L948] CALL, EXPR valid_product() [L859] int retValue_acc ; [L862] retValue_acc = 1 [L863] return (retValue_acc); [L948] RET, EXPR valid_product() [L948] tmp = valid_product() [L950] COND TRUE \read(tmp) [L952] FCALL setup() [L953] CALL runTest() [L935] CALL test() [L515] int splverifierCounter ; [L516] int tmp ; [L517] int tmp___0 ; [L518] int tmp___1 ; [L519] int tmp___2 ; [L522] splverifierCounter = 0 [L524] COND TRUE 1 [L526] COND TRUE splverifierCounter < 4 [L532] tmp = __VERIFIER_nondet_int() [L534] COND TRUE \read(tmp) [L536] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L536] RET waterRise() [L542] tmp___0 = __VERIFIER_nondet_int() [L544] COND FALSE !(\read(tmp___0)) [L552] tmp___2 = __VERIFIER_nondet_int() [L554] COND FALSE !(\read(tmp___2)) [L558] tmp___1 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___1) [L562] CALL stopSystem() [L784] COND FALSE !(\read(pumpRunning)) [L791] systemActive = 0 [L562] RET stopSystem() [L569] CALL timeShift() [L593] COND FALSE !(\read(pumpRunning)) [L600] COND FALSE !(\read(systemActive)) [L608] CALL __utac_acc__Specification3_spec__1() [L797] int tmp ; [L798] int tmp___0 ; [L799] int tmp___1 ; [L803] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L803] RET, EXPR isMethaneLevelCritical() [L803] tmp = isMethaneLevelCritical() [L805] COND FALSE !(\read(tmp)) [L809] CALL, EXPR getWaterLevel() [L118] int retValue_acc ; [L121] retValue_acc = waterLevel [L122] return (retValue_acc); [L809] RET, EXPR getWaterLevel() [L809] tmp___0 = getWaterLevel() [L811] COND TRUE tmp___0 == 2 [L813] CALL, EXPR isPumpRunning() [L717] int retValue_acc ; [L720] retValue_acc = pumpRunning [L721] return (retValue_acc); [L813] RET, EXPR isPumpRunning() [L813] tmp___1 = isPumpRunning() [L815] COND FALSE !(\read(tmp___1)) [L819] CALL __automaton_fail() [L140] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 558 SDtfs, 882 SDslu, 395 SDs, 0 SdLazy, 2087 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred 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: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 207 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 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...