/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=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:31:16,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:31:16,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:31:16,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:31:16,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:31:16,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:31:16,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:31:16,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:31:16,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:31:16,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:31:16,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:31:16,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:31:16,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:31:16,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:31:16,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:31:16,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:31:16,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:31:16,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:31:16,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:31:16,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:31:16,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:31:16,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:31:16,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:31:16,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:31:16,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:31:16,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:31:16,245 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:31:16,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:31:16,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:31:16,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:31:16,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:31:16,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:31:16,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:31:16,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:31:16,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:31:16,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:31:16,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:31:16,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:31:16,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:31:16,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:31:16,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:31:16,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:31:16,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:31:16,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:31:16,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:31:16,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:31:16,320 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:31:16,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:31:16,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:31:16,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:31:16,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:31:16,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:31:16,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:31:16,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:31:16,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:31:16,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:31:16,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:31:16,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:31:16,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:31:16,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:31:16,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:31:16,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:31:16,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:31:16,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:31:16,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:31:16,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:31:16,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:31:16,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:31:16,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:31:16,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:31:16,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:31:16,326 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=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:31:16,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:31:16,706 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:31:16,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:31:16,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:31:16,714 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:31:16,715 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-08-18 18:31:16,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/334a46674/de524683d5794b36b94183fda45ff564/FLAGfe4d0e581 [2020-08-18 18:31:17,327 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:31:17,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product19.cil.c [2020-08-18 18:31:17,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/334a46674/de524683d5794b36b94183fda45ff564/FLAGfe4d0e581 [2020-08-18 18:31:17,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/334a46674/de524683d5794b36b94183fda45ff564 [2020-08-18 18:31:17,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:31:17,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:31:17,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:31:17,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:31:17,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:31:17,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:31:17" (1/1) ... [2020-08-18 18:31:17,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415d1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:17, skipping insertion in model container [2020-08-18 18:31:17,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:31:17" (1/1) ... [2020-08-18 18:31:17,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:31:17,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:31:18,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:31:18,164 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:31:18,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:31:18,283 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:31:18,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18 WrapperNode [2020-08-18 18:31:18,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:31:18,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:31:18,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:31:18,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:31:18,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (1/1) ... [2020-08-18 18:31:18,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (1/1) ... [2020-08-18 18:31:18,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (1/1) ... [2020-08-18 18:31:18,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (1/1) ... [2020-08-18 18:31:18,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (1/1) ... [2020-08-18 18:31:18,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (1/1) ... [2020-08-18 18:31:18,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (1/1) ... [2020-08-18 18:31:18,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:31:18,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:31:18,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:31:18,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:31:18,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:31:18,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:31:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:31:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:31:18,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:31:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:31:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:31:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:31:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:31:18,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 18:31:18,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:31:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:31:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:31:18,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:31:18,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:31:18,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:31:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:31:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:31:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:31:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:31:18,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:31:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:31:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:31:18,485 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:31:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:31:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:31:18,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:31:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 18:31:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:31:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:31:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 18:31:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:31:18,487 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:31:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:31:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:31:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:31:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:31:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 18:31:18,488 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 18:31:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:31:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:31:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:31:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:31:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:31:18,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:31:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:31:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:31:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:31:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:31:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:31:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 18:31:18,490 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:31:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:31:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:31:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:31:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:31:18,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:31:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:31:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:31:18,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:31:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:31:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:31:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:31:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:31:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:31:18,493 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:31:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:31:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:31:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:31:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:31:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:31:18,494 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:31:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:31:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:31:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:31:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:31:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:31:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:31:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:31:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:31:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 18:31:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 18:31:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:31:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:31:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:31:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 18:31:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 18:31:18,499 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:31:18,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:31:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:31:18,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:31:19,545 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:31:19,545 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:31:19,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:31:19 BoogieIcfgContainer [2020-08-18 18:31:19,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:31:19,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:31:19,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:31:19,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:31:19,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:31:17" (1/3) ... [2020-08-18 18:31:19,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190386ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:31:19, skipping insertion in model container [2020-08-18 18:31:19,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:31:18" (2/3) ... [2020-08-18 18:31:19,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190386ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:31:19, skipping insertion in model container [2020-08-18 18:31:19,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:31:19" (3/3) ... [2020-08-18 18:31:19,559 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c [2020-08-18 18:31:19,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:31:19,578 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:31:19,592 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:31:19,617 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:31:19,617 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:31:19,618 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:31:19,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:31:19,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:31:19,618 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:31:19,618 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:31:19,618 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:31:19,640 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-08-18 18:31:19,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 18:31:19,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:31:19,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:31:19,653 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:31:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:31:19,659 INFO L82 PathProgramCache]: Analyzing trace with hash 506531791, now seen corresponding path program 1 times [2020-08-18 18:31:19,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:31:19,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055708599] [2020-08-18 18:31:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:31:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,266 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:31:20,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:31:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:31:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:31:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:31:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:31:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 18:31:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 18:31:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:31:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:31:20,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055708599] [2020-08-18 18:31:20,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:31:20,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:31:20,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626772885] [2020-08-18 18:31:20,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:31:20,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:31:20,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:31:20,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:31:20,466 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 3 states. [2020-08-18 18:31:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:31:21,626 INFO L93 Difference]: Finished difference Result 273 states and 360 transitions. [2020-08-18 18:31:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:31:21,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 18:31:21,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:31:21,644 INFO L225 Difference]: With dead ends: 273 [2020-08-18 18:31:21,644 INFO L226 Difference]: Without dead ends: 148 [2020-08-18 18:31:21,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:31:21,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-08-18 18:31:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-08-18 18:31:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-08-18 18:31:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-08-18 18:31:21,740 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 52 [2020-08-18 18:31:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:31:21,740 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-08-18 18:31:21,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:31:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-08-18 18:31:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 18:31:21,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:31:21,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:31:21,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:31:21,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:31:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:31:21,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1226284601, now seen corresponding path program 1 times [2020-08-18 18:31:21,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:31:21,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080242453] [2020-08-18 18:31:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:31:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,063 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:31:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:31:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:31:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:31:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:31:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:31:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:31:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 18:31:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 18:31:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:31:22,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080242453] [2020-08-18 18:31:22,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:31:22,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:31:22,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520731688] [2020-08-18 18:31:22,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:31:22,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:31:22,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:31:22,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:31:22,117 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 4 states. [2020-08-18 18:31:22,528 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:31:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:31:23,226 INFO L93 Difference]: Finished difference Result 200 states and 243 transitions. [2020-08-18 18:31:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 18:31:23,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 18:31:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:31:23,231 INFO L225 Difference]: With dead ends: 200 [2020-08-18 18:31:23,231 INFO L226 Difference]: Without dead ends: 132 [2020-08-18 18:31:23,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:31:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-18 18:31:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 107. [2020-08-18 18:31:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-18 18:31:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-08-18 18:31:23,267 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 53 [2020-08-18 18:31:23,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:31:23,267 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-08-18 18:31:23,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:31:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-08-18 18:31:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 18:31:23,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:31:23,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:31:23,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:31:23,270 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:31:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:31:23,271 INFO L82 PathProgramCache]: Analyzing trace with hash -860632419, now seen corresponding path program 1 times [2020-08-18 18:31:23,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:31:23,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033899480] [2020-08-18 18:31:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:31:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,609 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:31:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:31:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:31:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:31:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:31:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:31:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 18:31:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:31:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 18:31:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:31:23,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033899480] [2020-08-18 18:31:23,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:31:23,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:31:23,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834340568] [2020-08-18 18:31:23,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:31:23,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:31:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:31:23,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:31:23,769 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 8 states. [2020-08-18 18:31:24,154 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:31:24,460 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:31:24,724 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:31:24,943 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:31:25,704 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 18:31:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:31:27,288 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2020-08-18 18:31:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 18:31:27,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 18:31:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:31:27,294 INFO L225 Difference]: With dead ends: 375 [2020-08-18 18:31:27,294 INFO L226 Difference]: Without dead ends: 292 [2020-08-18 18:31:27,295 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 [2020-08-18 18:31:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-18 18:31:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 238. [2020-08-18 18:31:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-08-18 18:31:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2020-08-18 18:31:27,370 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 57 [2020-08-18 18:31:27,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:31:27,371 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2020-08-18 18:31:27,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:31:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2020-08-18 18:31:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 18:31:27,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:31:27,374 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] [2020-08-18 18:31:27,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:31:27,374 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:31:27,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:31:27,375 INFO L82 PathProgramCache]: Analyzing trace with hash -792004887, now seen corresponding path program 1 times [2020-08-18 18:31:27,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:31:27,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507626329] [2020-08-18 18:31:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:31:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,683 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:31:27,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:31:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:31:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:31:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:31:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:31:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:31:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 18:31:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 18:31:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 18:31:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:27,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:31:27,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507626329] [2020-08-18 18:31:27,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:31:27,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:31:27,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103059780] [2020-08-18 18:31:27,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:31:27,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:31:27,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:31:27,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:31:27,801 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand 8 states. [2020-08-18 18:31:28,189 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:31:29,440 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:31:29,792 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:31:30,052 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 18:31:30,303 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:31:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:31:30,935 INFO L93 Difference]: Finished difference Result 726 states and 953 transitions. [2020-08-18 18:31:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 18:31:30,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 18:31:30,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:31:30,944 INFO L225 Difference]: With dead ends: 726 [2020-08-18 18:31:30,944 INFO L226 Difference]: Without dead ends: 512 [2020-08-18 18:31:30,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 18:31:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-08-18 18:31:31,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 449. [2020-08-18 18:31:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-18 18:31:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 555 transitions. [2020-08-18 18:31:31,065 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 555 transitions. Word has length 63 [2020-08-18 18:31:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:31:31,066 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 555 transitions. [2020-08-18 18:31:31,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:31:31,066 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 555 transitions. [2020-08-18 18:31:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 18:31:31,070 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:31:31,071 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] [2020-08-18 18:31:31,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:31:31,071 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:31:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:31:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash -328985137, now seen corresponding path program 1 times [2020-08-18 18:31:31,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:31:31,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608285668] [2020-08-18 18:31:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:31:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,323 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 18:31:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:31:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:31:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 18:31:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 18:31:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 18:31:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 18:31:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 18:31:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 18:31:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 18:31:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 18:31:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:31:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:31:31,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608285668] [2020-08-18 18:31:31,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:31:31,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:31:31,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179303949] [2020-08-18 18:31:31,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:31:31,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:31:31,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:31:31,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:31:31,436 INFO L87 Difference]: Start difference. First operand 449 states and 555 transitions. Second operand 6 states. [2020-08-18 18:31:31,741 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 18:31:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:31:32,430 INFO L93 Difference]: Finished difference Result 761 states and 976 transitions. [2020-08-18 18:31:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:31:32,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 18:31:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:31:32,434 INFO L225 Difference]: With dead ends: 761 [2020-08-18 18:31:32,435 INFO L226 Difference]: Without dead ends: 336 [2020-08-18 18:31:32,437 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 [2020-08-18 18:31:32,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-08-18 18:31:32,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 315. [2020-08-18 18:31:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-18 18:31:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 366 transitions. [2020-08-18 18:31:32,504 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 366 transitions. Word has length 67 [2020-08-18 18:31:32,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:31:32,504 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 366 transitions. [2020-08-18 18:31:32,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:31:32,505 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 366 transitions. [2020-08-18 18:31:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 18:31:32,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:31:32,507 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] [2020-08-18 18:31:32,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:31:32,507 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:31:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:31:32,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1802868975, now seen corresponding path program 1 times [2020-08-18 18:31:32,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:31:32,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198799093] [2020-08-18 18:31:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:31:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:31:32,564 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:31:32,564 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:31:32,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:31:32,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:31:32 BoogieIcfgContainer [2020-08-18 18:31:32,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:31:32,596 INFO L168 Benchmark]: Toolchain (without parser) took 14964.33 ms. Allocated memory was 141.0 MB in the beginning and 473.4 MB in the end (delta: 332.4 MB). Free memory was 102.8 MB in the beginning and 350.8 MB in the end (delta: -248.0 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:31:32,599 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:31:32,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.41 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 171.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:31:32,602 INFO L168 Benchmark]: Boogie Preprocessor took 105.21 ms. Allocated memory is still 203.9 MB. Free memory was 171.4 MB in the beginning and 167.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-18 18:31:32,605 INFO L168 Benchmark]: RCFGBuilder took 1160.75 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 167.5 MB in the beginning and 194.1 MB in the end (delta: -26.7 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-08-18 18:31:32,605 INFO L168 Benchmark]: TraceAbstraction took 13041.95 ms. Allocated memory was 235.9 MB in the beginning and 473.4 MB in the end (delta: 237.5 MB). Free memory was 194.1 MB in the beginning and 350.8 MB in the end (delta: -156.7 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-08-18 18:31:32,612 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 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.41 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 171.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.21 ms. Allocated memory is still 203.9 MB. Free memory was 171.4 MB in the beginning and 167.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1160.75 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 167.5 MB in the beginning and 194.1 MB in the end (delta: -26.7 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13041.95 ms. Allocated memory was 235.9 MB in the beginning and 473.4 MB in the end (delta: 237.5 MB). Free memory was 194.1 MB in the beginning and 350.8 MB in the end (delta: -156.7 MB). Peak memory consumption was 80.8 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: [L293] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int cleanupTimeShifts = 4; [L594] int waterLevel = 1; [L595] int methaneLevelCritical = 0; [L753] int pumpRunning = 0; [L754] int systemActive = 1; [L568] int retValue_acc ; [L569] int tmp ; [L573] FCALL select_helpers() [L574] FCALL select_features() [L575] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L575] RET, EXPR valid_product() [L575] tmp = valid_product() [L577] COND TRUE \read(tmp) [L579] FCALL setup() [L580] CALL runTest() [L562] CALL test() [L685] int splverifierCounter ; [L686] int tmp ; [L687] int tmp___0 ; [L688] int tmp___1 ; [L689] int tmp___2 ; [L692] splverifierCounter = 0 [L694] COND TRUE 1 [L696] COND TRUE splverifierCounter < 4 [L702] tmp = __VERIFIER_nondet_int() [L704] COND TRUE \read(tmp) [L706] CALL waterRise() [L612] COND TRUE waterLevel < 2 [L613] waterLevel = waterLevel + 1 [L706] RET waterRise() [L712] tmp___0 = __VERIFIER_nondet_int() [L714] COND FALSE !(\read(tmp___0)) [L722] tmp___2 = __VERIFIER_nondet_int() [L724] COND FALSE !(\read(tmp___2)) [L728] tmp___1 = __VERIFIER_nondet_int() [L730] COND TRUE \read(tmp___1) [L732] CALL stopSystem() [L908] COND FALSE !(\read(pumpRunning)) [L915] systemActive = 0 [L732] RET stopSystem() [L739] CALL timeShift() [L760] COND FALSE !(\read(pumpRunning)) [L767] COND FALSE !(\read(systemActive)) [L775] CALL __utac_acc__Specification3_spec__1() [L91] int tmp ; [L92] int tmp___0 ; [L93] int tmp___1 ; [L97] CALL, EXPR isMethaneLevelCritical() [L633] int retValue_acc ; [L636] retValue_acc = methaneLevelCritical [L637] return (retValue_acc); [L97] RET, EXPR isMethaneLevelCritical() [L97] tmp = isMethaneLevelCritical() [L99] COND FALSE !(\read(tmp)) [L103] CALL, EXPR getWaterLevel() [L665] int retValue_acc ; [L668] retValue_acc = waterLevel [L669] return (retValue_acc); [L103] RET, EXPR getWaterLevel() [L103] tmp___0 = getWaterLevel() [L105] COND TRUE tmp___0 == 2 [L107] CALL, EXPR isPumpRunning() [L841] int retValue_acc ; [L844] retValue_acc = pumpRunning [L845] 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 38 procedures, 223 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 508 SDtfs, 877 SDslu, 356 SDs, 0 SdLazy, 1788 SolverSat, 556 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 195 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s 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...