/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -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 0.1.25-5644d1e-m [2020-08-19 00:58:49,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:58:49,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:58:49,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:58:49,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:58:49,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:58:49,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:58:49,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:58:49,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:58:49,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:58:49,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:58:49,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:58:49,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:58:49,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:58:49,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:58:49,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:58:49,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:58:49,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:58:49,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:58:49,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:58:49,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:58:49,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:58:49,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:58:49,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:58:49,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:58:49,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:58:49,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:58:49,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:58:49,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:58:49,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:58:49,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:58:49,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:58:49,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:58:49,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:58:49,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:58:49,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:58:49,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:58:49,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:58:49,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:58:49,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:58:49,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:58:49,251 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 00:58:49,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:58:49,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:58:49,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:58:49,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:58:49,292 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:58:49,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:58:49,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:58:49,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:58:49,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:58:49,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:58:49,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:58:49,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:58:49,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:58:49,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:58:49,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:58:49,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:58:49,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:58:49,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:58:49,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:58:49,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:58:49,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:58:49,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:58:49,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:58:49,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:58:49,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:58:49,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:58:49,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:58:49,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:58:49,298 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:58:49,299 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=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:58:49,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:58:49,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:58:49,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:58:49,645 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:58:49,645 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:58:49,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-08-19 00:58:49,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/040d4d83c/a9fea284b1d94ee387d87f415aba22e5/FLAG9f4f25a45 [2020-08-19 00:58:50,254 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:58:50,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product31.cil.c [2020-08-19 00:58:50,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/040d4d83c/a9fea284b1d94ee387d87f415aba22e5/FLAG9f4f25a45 [2020-08-19 00:58:50,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/040d4d83c/a9fea284b1d94ee387d87f415aba22e5 [2020-08-19 00:58:50,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:58:50,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:58:50,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:58:50,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:58:50,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:58:50,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:58:50" (1/1) ... [2020-08-19 00:58:50,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ac6c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:50, skipping insertion in model container [2020-08-19 00:58:50,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:58:50" (1/1) ... [2020-08-19 00:58:50,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:58:50,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:58:50,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:58:51,095 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:58:51,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:58:51,219 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:58:51,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51 WrapperNode [2020-08-19 00:58:51,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:58:51,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:58:51,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:58:51,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:58:51,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (1/1) ... [2020-08-19 00:58:51,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (1/1) ... [2020-08-19 00:58:51,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (1/1) ... [2020-08-19 00:58:51,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (1/1) ... [2020-08-19 00:58:51,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (1/1) ... [2020-08-19 00:58:51,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (1/1) ... [2020-08-19 00:58:51,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (1/1) ... [2020-08-19 00:58:51,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:58:51,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:58:51,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:58:51,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:58:51,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (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 00:58:51,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:58:51,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:58:51,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:58:51,364 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:58:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:58:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:58:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:58:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:58:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:58:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:58:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:58:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:58:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:58:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:58:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:58:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:58:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:58:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:58:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:58:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:58:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:58:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:58:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:58:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:58:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:58:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:58:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:58:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:58:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:58:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:58:51,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:58:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:58:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:58:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:58:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:58:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:58:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:58:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:58:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:58:51,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:58:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:58:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:58:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:58:51,370 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:58:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:58:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:58:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:58:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:58:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:58:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:58:51,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:58:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:58:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:58:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:58:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:58:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:58:51,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:58:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:58:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:58:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:58:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:58:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:58:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:58:51,374 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:58:51,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:58:51,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:58:51,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:58:51,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:58:51,374 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:58:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:58:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:58:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:58:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:58:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:58:51,375 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:58:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:58:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 00:58:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:58:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:58:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:58:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:58:51,376 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:58:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:58:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:58:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:58:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:58:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:58:51,377 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:58:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:58:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:58:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:58:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:58:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:58:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:58:52,532 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:58:52,533 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:58:52,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:58:52 BoogieIcfgContainer [2020-08-19 00:58:52,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:58:52,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:58:52,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:58:52,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:58:52,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:58:50" (1/3) ... [2020-08-19 00:58:52,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5736c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:58:52, skipping insertion in model container [2020-08-19 00:58:52,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:58:51" (2/3) ... [2020-08-19 00:58:52,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5736c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:58:52, skipping insertion in model container [2020-08-19 00:58:52,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:58:52" (3/3) ... [2020-08-19 00:58:52,547 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product31.cil.c [2020-08-19 00:58:52,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:58:52,566 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:58:52,581 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:58:52,610 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:58:52,610 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:58:52,610 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:58:52,610 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:58:52,611 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:58:52,611 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:58:52,611 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:58:52,611 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:58:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-19 00:58:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:58:52,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:52,647 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 00:58:52,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:52,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2139663592, now seen corresponding path program 1 times [2020-08-19 00:58:52,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:52,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151270867] [2020-08-19 00:58:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,398 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:58:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:58:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:53,525 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 00:58:53,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151270867] [2020-08-19 00:58:53,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:53,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:58:53,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113131236] [2020-08-19 00:58:53,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:58:53,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:53,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:58:53,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:58:53,567 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-19 00:58:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:54,789 INFO L93 Difference]: Finished difference Result 305 states and 403 transitions. [2020-08-19 00:58:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:58:54,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 00:58:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:54,807 INFO L225 Difference]: With dead ends: 305 [2020-08-19 00:58:54,807 INFO L226 Difference]: Without dead ends: 165 [2020-08-19 00:58:54,812 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 00:58:54,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-19 00:58:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-08-19 00:58:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-19 00:58:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2020-08-19 00:58:54,984 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 52 [2020-08-19 00:58:54,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:54,984 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2020-08-19 00:58:54,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:58:54,985 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2020-08-19 00:58:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 00:58:54,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:54,996 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 00:58:54,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:58:54,997 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:54,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:54,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1114338562, now seen corresponding path program 1 times [2020-08-19 00:58:54,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:54,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138083552] [2020-08-19 00:58:54,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,373 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:58:55,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:58:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:58:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:58:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:55,418 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 00:58:55,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138083552] [2020-08-19 00:58:55,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:55,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:58:55,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225326670] [2020-08-19 00:58:55,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:58:55,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:55,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:58:55,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:58:55,422 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand 4 states. [2020-08-19 00:58:55,831 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:56,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:56,646 INFO L93 Difference]: Finished difference Result 232 states and 286 transitions. [2020-08-19 00:58:56,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:58:56,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 00:58:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:56,652 INFO L225 Difference]: With dead ends: 232 [2020-08-19 00:58:56,654 INFO L226 Difference]: Without dead ends: 149 [2020-08-19 00:58:56,656 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 00:58:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-19 00:58:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 122. [2020-08-19 00:58:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 00:58:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2020-08-19 00:58:56,712 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 53 [2020-08-19 00:58:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:56,713 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2020-08-19 00:58:56,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:58:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2020-08-19 00:58:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:58:56,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:56,719 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] [2020-08-19 00:58:56,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:58:56,720 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:56,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1063304095, now seen corresponding path program 1 times [2020-08-19 00:58:56,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:56,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915502574] [2020-08-19 00:58:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,119 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:58:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:58:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:58:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:58:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:57,227 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 00:58:57,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915502574] [2020-08-19 00:58:57,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:58:57,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:58:57,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765874590] [2020-08-19 00:58:57,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:58:57,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:57,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:58:57,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:58:57,234 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand 8 states. [2020-08-19 00:58:57,615 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:58:57,905 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:58,157 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:58,408 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:58:59,133 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:59:01,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:01,040 INFO L93 Difference]: Finished difference Result 424 states and 531 transitions. [2020-08-19 00:59:01,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:59:01,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 00:59:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:01,046 INFO L225 Difference]: With dead ends: 424 [2020-08-19 00:59:01,046 INFO L226 Difference]: Without dead ends: 326 [2020-08-19 00:59:01,047 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 [2020-08-19 00:59:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-19 00:59:01,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-19 00:59:01,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-19 00:59:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 327 transitions. [2020-08-19 00:59:01,112 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 327 transitions. Word has length 57 [2020-08-19 00:59:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:01,112 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 327 transitions. [2020-08-19 00:59:01,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:59:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 327 transitions. [2020-08-19 00:59:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-19 00:59:01,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:01,114 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] [2020-08-19 00:59:01,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:59:01,115 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:01,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:01,115 INFO L82 PathProgramCache]: Analyzing trace with hash 248297521, now seen corresponding path program 1 times [2020-08-19 00:59:01,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:01,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209732401] [2020-08-19 00:59:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,386 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:59:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:59:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:59:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:59:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:59:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:59:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:59:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:59:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 00:59:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:59:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:01,531 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 00:59:01,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209732401] [2020-08-19 00:59:01,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:59:01,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:59:01,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653708421] [2020-08-19 00:59:01,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:59:01,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:59:01,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:59:01,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:59:01,534 INFO L87 Difference]: Start difference. First operand 268 states and 327 transitions. Second operand 8 states. [2020-08-19 00:59:01,861 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:59:03,140 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:03,522 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:03,787 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:59:04,066 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:59:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:04,818 INFO L93 Difference]: Finished difference Result 824 states and 1085 transitions. [2020-08-19 00:59:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:59:04,818 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-19 00:59:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:04,825 INFO L225 Difference]: With dead ends: 824 [2020-08-19 00:59:04,825 INFO L226 Difference]: Without dead ends: 580 [2020-08-19 00:59:04,827 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 [2020-08-19 00:59:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-08-19 00:59:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 513. [2020-08-19 00:59:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-08-19 00:59:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 641 transitions. [2020-08-19 00:59:04,956 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 641 transitions. Word has length 63 [2020-08-19 00:59:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:04,956 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 641 transitions. [2020-08-19 00:59:04,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:59:04,957 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 641 transitions. [2020-08-19 00:59:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 00:59:04,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:04,960 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] [2020-08-19 00:59:04,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:59:04,961 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:04,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1905140809, now seen corresponding path program 1 times [2020-08-19 00:59:04,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:04,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020251206] [2020-08-19 00:59:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,236 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:59:05,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:59:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:59:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:59:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:59:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:59:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:59:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:59:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 00:59:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 00:59:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 00:59:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:59:05,321 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 00:59:05,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020251206] [2020-08-19 00:59:05,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:59:05,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:59:05,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819936394] [2020-08-19 00:59:05,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:59:05,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:59:05,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:59:05,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:59:05,324 INFO L87 Difference]: Start difference. First operand 513 states and 641 transitions. Second operand 6 states. [2020-08-19 00:59:05,659 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:59:06,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:59:06,447 INFO L93 Difference]: Finished difference Result 845 states and 1092 transitions. [2020-08-19 00:59:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:59:06,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-19 00:59:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:59:06,451 INFO L225 Difference]: With dead ends: 845 [2020-08-19 00:59:06,452 INFO L226 Difference]: Without dead ends: 356 [2020-08-19 00:59:06,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:59:06,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-08-19 00:59:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 335. [2020-08-19 00:59:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-19 00:59:06,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 386 transitions. [2020-08-19 00:59:06,523 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 386 transitions. Word has length 67 [2020-08-19 00:59:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:59:06,523 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 386 transitions. [2020-08-19 00:59:06,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:59:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 386 transitions. [2020-08-19 00:59:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 00:59:06,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:59:06,525 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] [2020-08-19 00:59:06,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:59:06,526 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:59:06,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:59:06,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1719041065, now seen corresponding path program 1 times [2020-08-19 00:59:06,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:59:06,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411601963] [2020-08-19 00:59:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:59:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:59:06,580 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:59:06,580 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:59:06,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:59:06,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:59:06 BoogieIcfgContainer [2020-08-19 00:59:06,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:59:06,613 INFO L168 Benchmark]: Toolchain (without parser) took 16044.90 ms. Allocated memory was 143.1 MB in the beginning and 478.2 MB in the end (delta: 335.0 MB). Free memory was 105.0 MB in the beginning and 209.7 MB in the end (delta: -104.7 MB). Peak memory consumption was 230.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:06,614 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:59:06,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.62 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 104.8 MB in the beginning and 173.9 MB in the end (delta: -69.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:06,615 INFO L168 Benchmark]: Boogie Preprocessor took 83.42 ms. Allocated memory is still 205.0 MB. Free memory was 173.9 MB in the beginning and 170.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:06,616 INFO L168 Benchmark]: RCFGBuilder took 1232.81 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 170.1 MB in the beginning and 186.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:06,617 INFO L168 Benchmark]: TraceAbstraction took 14071.22 ms. Allocated memory was 232.3 MB in the beginning and 478.2 MB in the end (delta: 245.9 MB). Free memory was 186.3 MB in the beginning and 209.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 222.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:59:06,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.62 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 104.8 MB in the beginning and 173.9 MB in the end (delta: -69.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.42 ms. Allocated memory is still 205.0 MB. Free memory was 173.9 MB in the beginning and 170.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1232.81 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 170.1 MB in the beginning and 186.3 MB in the end (delta: -16.2 MB). Peak memory consumption was 77.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14071.22 ms. Allocated memory was 232.3 MB in the beginning and 478.2 MB in the end (delta: 245.9 MB). Free memory was 186.3 MB in the beginning and 209.7 MB in the end (delta: -23.5 MB). Peak memory consumption was 222.4 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: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 557 SDtfs, 882 SDslu, 394 SDs, 0 SdLazy, 2083 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: 0.4s 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...