/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:38:20,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:38:20,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:38:20,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:38:20,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:38:20,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:38:20,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:38:20,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:38:20,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:38:20,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:38:20,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:38:20,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:38:20,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:38:20,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:38:20,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:38:20,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:38:20,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:38:20,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:38:20,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:38:20,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:38:20,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:38:20,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:38:20,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:38:20,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:38:20,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:38:20,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:38:20,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:38:20,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:38:20,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:38:20,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:38:20,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:38:20,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:38:20,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:38:20,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:38:20,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:38:20,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:38:20,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:38:20,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:38:20,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:38:20,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:38:20,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:38:20,322 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 [2020-08-19 06:38:20,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:38:20,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:38:20,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:38:20,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:38:20,348 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:38:20,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:38:20,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:38:20,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:38:20,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:38:20,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:38:20,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:38:20,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:38:20,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:38:20,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:38:20,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:38:20,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:38:20,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:38:20,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:38:20,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:38:20,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:38:20,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:38:20,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:38:20,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:38:20,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:38:20,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:38:20,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:38:20,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:38:20,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:38:20,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:38:20,353 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=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:38:20,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:38:20,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:38:20,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:38:20,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:38:20,710 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:38:20,711 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c [2020-08-19 06:38:20,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37707a1a3/b704a57bbc3b4394b43699df09bfb36a/FLAGd37e8296e [2020-08-19 06:38:21,322 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:38:21,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product14.cil.c [2020-08-19 06:38:21,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37707a1a3/b704a57bbc3b4394b43699df09bfb36a/FLAGd37e8296e [2020-08-19 06:38:21,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37707a1a3/b704a57bbc3b4394b43699df09bfb36a [2020-08-19 06:38:21,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:38:21,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:38:21,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:38:21,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:38:21,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:38:21,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:38:21" (1/1) ... [2020-08-19 06:38:21,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331f3ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:21, skipping insertion in model container [2020-08-19 06:38:21,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:38:21" (1/1) ... [2020-08-19 06:38:21,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:38:21,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:38:21,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:38:22,000 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:38:22,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:38:22,211 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:38:22,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22 WrapperNode [2020-08-19 06:38:22,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:38:22,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:38:22,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:38:22,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:38:22,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (1/1) ... [2020-08-19 06:38:22,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (1/1) ... [2020-08-19 06:38:22,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (1/1) ... [2020-08-19 06:38:22,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (1/1) ... [2020-08-19 06:38:22,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (1/1) ... [2020-08-19 06:38:22,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (1/1) ... [2020-08-19 06:38:22,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (1/1) ... [2020-08-19 06:38:22,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:38:22,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:38:22,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:38:22,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:38:22,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (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 [2020-08-19 06:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:38:22,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 06:38:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 06:38:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 06:38:22,386 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 06:38:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 06:38:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 06:38:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:38:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 06:38:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 06:38:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 06:38:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-19 06:38:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 06:38:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 06:38:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 06:38:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 06:38:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 06:38:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 06:38:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 06:38:22,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 06:38:22,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 06:38:22,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 06:38:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 06:38:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 06:38:22,393 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 06:38:22,395 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 06:38:22,395 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 06:38:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 06:38:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 06:38:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:38:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 06:38:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 06:38:22,396 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 06:38:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 06:38:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 06:38:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 06:38:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:38:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:38:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 06:38:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 06:38:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 06:38:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 06:38:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 06:38:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 06:38:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 06:38:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 06:38:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 06:38:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 06:38:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 06:38:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 06:38:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 06:38:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 06:38:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 06:38:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 06:38:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 06:38:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 06:38:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 06:38:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 06:38:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-19 06:38:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:38:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 06:38:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:38:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:38:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 06:38:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:38:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:38:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:38:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:38:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 06:38:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:38:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 06:38:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 06:38:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:38:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 06:38:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 06:38:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 06:38:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 06:38:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 06:38:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 06:38:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 06:38:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 06:38:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 06:38:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 06:38:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:38:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:38:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:38:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:38:23,477 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:38:23,477 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 06:38:23,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:38:23 BoogieIcfgContainer [2020-08-19 06:38:23,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:38:23,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:38:23,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:38:23,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:38:23,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:38:21" (1/3) ... [2020-08-19 06:38:23,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3fdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:38:23, skipping insertion in model container [2020-08-19 06:38:23,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:38:22" (2/3) ... [2020-08-19 06:38:23,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3fdcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:38:23, skipping insertion in model container [2020-08-19 06:38:23,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:38:23" (3/3) ... [2020-08-19 06:38:23,491 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product14.cil.c [2020-08-19 06:38:23,502 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:38:23,511 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:38:23,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:38:23,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:38:23,551 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:38:23,551 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:38:23,551 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:38:23,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:38:23,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:38:23,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:38:23,552 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:38:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-19 06:38:23,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 06:38:23,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:23,587 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] [2020-08-19 06:38:23,587 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:23,593 INFO L82 PathProgramCache]: Analyzing trace with hash 940922037, now seen corresponding path program 1 times [2020-08-19 06:38:23,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:23,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446727549] [2020-08-19 06:38:23,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,293 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:24,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 06:38:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:38:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:24,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446727549] [2020-08-19 06:38:24,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:24,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:38:24,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967273750] [2020-08-19 06:38:24,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:38:24,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:24,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:38:24,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:38:24,465 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-19 06:38:25,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:25,555 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-19 06:38:25,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:38:25,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 06:38:25,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:25,572 INFO L225 Difference]: With dead ends: 258 [2020-08-19 06:38:25,573 INFO L226 Difference]: Without dead ends: 140 [2020-08-19 06:38:25,577 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 [2020-08-19 06:38:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-19 06:38:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-19 06:38:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-19 06:38:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-19 06:38:25,660 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52 [2020-08-19 06:38:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:25,660 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-19 06:38:25,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:38:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-19 06:38:25,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 06:38:25,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:25,664 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] [2020-08-19 06:38:25,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:38:25,665 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:25,666 INFO L82 PathProgramCache]: Analyzing trace with hash -110013257, now seen corresponding path program 1 times [2020-08-19 06:38:25,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:25,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502478934] [2020-08-19 06:38:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,042 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:26,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 06:38:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 06:38:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 06:38:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:26,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502478934] [2020-08-19 06:38:26,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:26,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:38:26,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582280634] [2020-08-19 06:38:26,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:38:26,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:26,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:38:26,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:38:26,092 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-19 06:38:26,510 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 06:38:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:27,243 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-19 06:38:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:38:27,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 06:38:27,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:27,248 INFO L225 Difference]: With dead ends: 187 [2020-08-19 06:38:27,249 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 06:38:27,251 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 [2020-08-19 06:38:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 06:38:27,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-19 06:38:27,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 06:38:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-19 06:38:27,287 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53 [2020-08-19 06:38:27,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:27,287 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-19 06:38:27,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:38:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-19 06:38:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 06:38:27,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:27,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:38:27,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:38:27,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:27,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:27,291 INFO L82 PathProgramCache]: Analyzing trace with hash -829955057, now seen corresponding path program 1 times [2020-08-19 06:38:27,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:27,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853822966] [2020-08-19 06:38:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,623 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 06:38:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 06:38:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:38:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:27,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853822966] [2020-08-19 06:38:27,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:27,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:38:27,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750510994] [2020-08-19 06:38:27,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:38:27,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:27,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:38:27,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:38:27,760 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-19 06:38:28,099 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:38:28,415 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:28,682 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:28,944 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:29,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:29,910 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-19 06:38:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:38:29,911 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-19 06:38:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:29,914 INFO L225 Difference]: With dead ends: 200 [2020-08-19 06:38:29,914 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 06:38:29,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:38:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 06:38:29,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-19 06:38:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 06:38:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-19 06:38:29,945 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58 [2020-08-19 06:38:29,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:29,946 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-19 06:38:29,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:38:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-19 06:38:29,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 06:38:29,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:29,948 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] [2020-08-19 06:38:29,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:38:29,949 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:29,949 INFO L82 PathProgramCache]: Analyzing trace with hash -715130014, now seen corresponding path program 1 times [2020-08-19 06:38:29,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:29,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024044060] [2020-08-19 06:38:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,261 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:30,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 06:38:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 06:38:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 06:38:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-19 06:38:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:30,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024044060] [2020-08-19 06:38:30,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:30,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 06:38:30,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224410354] [2020-08-19 06:38:30,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:38:30,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:30,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:38:30,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:38:30,363 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-08-19 06:38:30,676 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:38:32,053 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:32,351 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:32,573 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 06:38:32,905 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:38:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:33,135 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-08-19 06:38:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:38:33,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-19 06:38:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:33,140 INFO L225 Difference]: With dead ends: 299 [2020-08-19 06:38:33,140 INFO L226 Difference]: Without dead ends: 223 [2020-08-19 06:38:33,142 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 [2020-08-19 06:38:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-19 06:38:33,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2020-08-19 06:38:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-19 06:38:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-08-19 06:38:33,212 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66 [2020-08-19 06:38:33,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:33,213 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-08-19 06:38:33,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:38:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-08-19 06:38:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 06:38:33,216 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:33,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:38:33,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:38:33,217 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:33,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1329435240, now seen corresponding path program 1 times [2020-08-19 06:38:33,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:33,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117413984] [2020-08-19 06:38:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,552 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 06:38:33,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:38:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:38:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:38:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 06:38:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 06:38:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 06:38:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 06:38:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:38:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 06:38:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 06:38:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 06:38:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:38:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:38:33,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117413984] [2020-08-19 06:38:33,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:38:33,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 06:38:33,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522320522] [2020-08-19 06:38:33,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:38:33,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:38:33,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:38:33,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:38:33,672 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-08-19 06:38:33,949 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 06:38:34,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:38:34,500 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2020-08-19 06:38:34,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:38:34,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-19 06:38:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:38:34,503 INFO L225 Difference]: With dead ends: 296 [2020-08-19 06:38:34,503 INFO L226 Difference]: Without dead ends: 146 [2020-08-19 06:38:34,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:38:34,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-19 06:38:34,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-19 06:38:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 06:38:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-19 06:38:34,533 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 70 [2020-08-19 06:38:34,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:38:34,533 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-19 06:38:34,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:38:34,533 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-19 06:38:34,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 06:38:34,534 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:38:34,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:38:34,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:38:34,535 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:38:34,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:38:34,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1182747068, now seen corresponding path program 1 times [2020-08-19 06:38:34,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:38:34,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686083614] [2020-08-19 06:38:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:38:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:38:34,591 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:38:34,592 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:38:34,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:38:34,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:38:34 BoogieIcfgContainer [2020-08-19 06:38:34,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:38:34,623 INFO L168 Benchmark]: Toolchain (without parser) took 13028.65 ms. Allocated memory was 141.6 MB in the beginning and 414.2 MB in the end (delta: 272.6 MB). Free memory was 104.1 MB in the beginning and 92.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 284.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:34,624 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 06:38:34,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.32 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.9 MB in the beginning and 173.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:34,626 INFO L168 Benchmark]: Boogie Preprocessor took 107.45 ms. Allocated memory is still 203.9 MB. Free memory was 173.8 MB in the beginning and 169.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:34,627 INFO L168 Benchmark]: RCFGBuilder took 1162.41 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 169.7 MB in the beginning and 197.9 MB in the end (delta: -28.2 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:34,628 INFO L168 Benchmark]: TraceAbstraction took 11137.34 ms. Allocated memory was 235.4 MB in the beginning and 414.2 MB in the end (delta: 178.8 MB). Free memory was 197.9 MB in the beginning and 92.0 MB in the end (delta: 105.9 MB). Peak memory consumption was 284.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:38:34,632 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.32 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 103.9 MB in the beginning and 173.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.45 ms. Allocated memory is still 203.9 MB. Free memory was 173.8 MB in the beginning and 169.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1162.41 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 169.7 MB in the beginning and 197.9 MB in the end (delta: -28.2 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11137.34 ms. Allocated memory was 235.4 MB in the beginning and 414.2 MB in the end (delta: 178.8 MB). Free memory was 197.9 MB in the beginning and 92.0 MB in the end (delta: 105.9 MB). Peak memory consumption was 284.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L131] int pumpRunning = 0; [L132] int systemActive = 1; [L458] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L725] int cleanupTimeShifts = 4; [L821] int waterLevel = 1; [L822] int methaneLevelCritical = 0; [L798] int retValue_acc ; [L799] int tmp ; [L803] FCALL select_helpers() [L804] FCALL select_features() [L805] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L805] RET, EXPR valid_product() [L805] tmp = valid_product() [L807] COND TRUE \read(tmp) [L809] FCALL setup() [L810] CALL runTest() [L792] CALL test() [L659] int splverifierCounter ; [L660] int tmp ; [L661] int tmp___0 ; [L662] int tmp___1 ; [L663] int tmp___2 ; [L666] splverifierCounter = 0 [L668] COND TRUE 1 [L670] COND TRUE splverifierCounter < 4 [L676] tmp = __VERIFIER_nondet_int() [L678] COND TRUE \read(tmp) [L680] CALL waterRise() [L839] COND TRUE waterLevel < 2 [L840] waterLevel = waterLevel + 1 [L680] RET waterRise() [L686] tmp___0 = __VERIFIER_nondet_int() [L688] COND FALSE !(\read(tmp___0)) [L696] tmp___2 = __VERIFIER_nondet_int() [L698] COND FALSE !(\read(tmp___2)) [L704] tmp___1 = __VERIFIER_nondet_int() [L706] COND TRUE \read(tmp___1) [L713] CALL timeShift() [L138] COND FALSE !(\read(pumpRunning)) [L145] COND TRUE \read(systemActive) [L147] CALL processEnvironment() [L167] int tmp ; [L170] COND FALSE !(\read(pumpRunning)) [L185] FCALL processEnvironment__wrappee__methaneQuery() [L147] RET processEnvironment() [L153] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L860] int retValue_acc ; [L863] retValue_acc = methaneLevelCritical [L864] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L892] int retValue_acc ; [L895] retValue_acc = waterLevel [L896] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L107] RET, EXPR isPumpRunning() [L107] tmp___1 = isPumpRunning() [L109] COND FALSE !(\read(tmp___1)) [L113] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 218 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 447 SDtfs, 739 SDslu, 238 SDs, 0 SdLazy, 1311 SolverSat, 526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred 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, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 83938 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...