/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:04:50,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:04:50,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:04:50,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:04:50,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:04:50,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:04:50,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:04:50,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:04:50,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:04:50,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:04:50,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:04:50,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:04:50,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:04:50,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:04:50,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:04:50,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:04:50,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:04:50,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:04:50,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:04:50,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:04:50,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:04:50,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:04:50,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:04:50,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:04:50,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:04:50,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:04:50,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:04:50,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:04:50,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:04:50,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:04:50,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:04:50,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:04:50,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:04:50,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:04:50,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:04:50,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:04:50,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:04:50,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:04:50,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:04:50,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:04:50,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:04:50,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:04:50,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:04:50,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:04:50,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:04:50,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:04:50,485 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:04:50,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:04:50,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:04:50,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:04:50,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:04:50,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:04:50,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:04:50,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:04:50,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:04:50,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:04:50,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:04:50,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:04:50,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:04:50,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:04:50,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:04:50,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:04:50,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:04:50,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:04:50,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:04:50,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:04:50,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:04:50,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:04:50,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:04:50,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:04:50,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:04:50,490 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 -> false [2020-08-21 13:04:50,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:04:50,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:04:50,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:04:50,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:04:50,839 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:04:50,839 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-21 13:04:50,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ff879e2/1a8fce48fbee44b0a3f1296aae49ccbd/FLAG3c089221a [2020-08-21 13:04:51,407 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:04:51,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-08-21 13:04:51,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ff879e2/1a8fce48fbee44b0a3f1296aae49ccbd/FLAG3c089221a [2020-08-21 13:04:51,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5ff879e2/1a8fce48fbee44b0a3f1296aae49ccbd [2020-08-21 13:04:51,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:04:51,768 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:04:51,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:04:51,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:04:51,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:04:51,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:04:51" (1/1) ... [2020-08-21 13:04:51,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afe831a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:51, skipping insertion in model container [2020-08-21 13:04:51,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:04:51" (1/1) ... [2020-08-21 13:04:51,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:04:51,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:04:52,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:04:52,293 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:04:52,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:04:52,460 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:04:52,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52 WrapperNode [2020-08-21 13:04:52,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:04:52,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:04:52,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:04:52,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:04:52,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... [2020-08-21 13:04:52,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:04:52,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:04:52,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:04:52,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:04:52,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:04:52,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:04:52,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:04:52,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:04:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:04:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:04:52,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:04:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:04:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:04:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:04:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:04:52,646 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:04:52,647 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:04:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:04:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:04:52,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:04:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:04:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:04:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:04:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:04:52,649 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:04:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:04:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:04:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:04:52,650 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:04:52,652 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:04:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:04:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:04:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:04:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:04:52,653 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:04:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:04:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:04:52,654 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:04:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:04:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:04:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:04:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:04:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:04:52,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:04:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:04:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:04:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:04:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:04:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:04:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:04:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:04:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:04:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:04:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:04:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:04:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:04:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:04:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:04:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:04:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:04:52,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:04:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:04:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:04:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:04:52,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 13:04:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:04:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:04:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:04:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:04:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:04:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:04:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:04:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:04:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:04:52,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:04:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:04:52,664 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:04:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:04:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:04:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:04:52,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:04:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:04:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:04:52,666 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:04:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:04:52,667 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:04:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:04:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:04:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:04:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:04:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:04:52,668 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:04:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:04:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:04:52,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:04:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:04:52,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:04:53,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:04:53,789 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:04:53,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:04:53 BoogieIcfgContainer [2020-08-21 13:04:53,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:04:53,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:04:53,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:04:53,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:04:53,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:04:51" (1/3) ... [2020-08-21 13:04:53,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774683a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:04:53, skipping insertion in model container [2020-08-21 13:04:53,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:04:52" (2/3) ... [2020-08-21 13:04:53,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774683a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:04:53, skipping insertion in model container [2020-08-21 13:04:53,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:04:53" (3/3) ... [2020-08-21 13:04:53,808 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-08-21 13:04:53,820 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:04:53,829 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:04:53,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:04:53,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:04:53,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:04:53,868 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:04:53,869 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:04:53,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:04:53,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:04:53,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:04:53,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:04:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-21 13:04:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:04:53,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:53,903 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] [2020-08-21 13:04:53,903 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:53,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:53,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1406508770, now seen corresponding path program 1 times [2020-08-21 13:04:53,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:53,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887390873] [2020-08-21 13:04:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,578 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:54,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:04:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:04:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:54,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887390873] [2020-08-21 13:04:54,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:54,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:04:54,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381144436] [2020-08-21 13:04:54,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:04:54,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:54,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:04:54,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:04:54,722 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-21 13:04:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:04:55,904 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2020-08-21 13:04:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:04:55,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:04:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:04:55,921 INFO L225 Difference]: With dead ends: 296 [2020-08-21 13:04:55,922 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 13:04:55,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:04:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 13:04:56,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-21 13:04:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-21 13:04:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2020-08-21 13:04:56,038 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 46 [2020-08-21 13:04:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:04:56,040 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2020-08-21 13:04:56,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:04:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2020-08-21 13:04:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:04:56,050 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:56,050 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] [2020-08-21 13:04:56,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:04:56,051 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:56,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:56,054 INFO L82 PathProgramCache]: Analyzing trace with hash 297997714, now seen corresponding path program 1 times [2020-08-21 13:04:56,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:56,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920369721] [2020-08-21 13:04:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,480 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:04:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:04:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:56,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920369721] [2020-08-21 13:04:56,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:56,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:04:56,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091627706] [2020-08-21 13:04:56,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:04:56,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:56,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:04:56,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:04:56,523 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 4 states. [2020-08-21 13:04:56,906 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:04:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:04:57,694 INFO L93 Difference]: Finished difference Result 225 states and 275 transitions. [2020-08-21 13:04:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:04:57,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:04:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:04:57,698 INFO L225 Difference]: With dead ends: 225 [2020-08-21 13:04:57,699 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 13:04:57,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:04:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 13:04:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 13:04:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 13:04:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-21 13:04:57,738 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2020-08-21 13:04:57,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:04:57,738 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-21 13:04:57,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:04:57,738 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-21 13:04:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:04:57,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:04:57,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:04:57,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:04:57,741 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:04:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:04:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1416539958, now seen corresponding path program 1 times [2020-08-21 13:04:57,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:04:57,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718652959] [2020-08-21 13:04:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:04:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:58,068 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:04:58,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:04:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:04:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:58,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:04:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:58,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:04:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:04:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:58,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:04:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:04:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:04:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:04:58,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718652959] [2020-08-21 13:04:58,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:04:58,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:04:58,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637980387] [2020-08-21 13:04:58,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:04:58,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:04:58,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:04:58,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:04:58,143 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 8 states. [2020-08-21 13:04:58,491 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:04:58,783 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:04:59,048 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:04:59,274 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:00,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:00,496 INFO L93 Difference]: Finished difference Result 238 states and 293 transitions. [2020-08-21 13:05:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:05:00,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 13:05:00,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:00,500 INFO L225 Difference]: With dead ends: 238 [2020-08-21 13:05:00,500 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 13:05:00,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:05:00,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 13:05:00,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-21 13:05:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 13:05:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-21 13:05:00,537 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 52 [2020-08-21 13:05:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:00,538 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-21 13:05:00,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:05:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-21 13:05:00,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 13:05:00,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:00,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:00,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:05:00,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:00,541 INFO L82 PathProgramCache]: Analyzing trace with hash -819223945, now seen corresponding path program 1 times [2020-08-21 13:05:00,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:00,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362125055] [2020-08-21 13:05:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,789 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:00,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:05:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:05:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 13:05:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:00,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362125055] [2020-08-21 13:05:00,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:00,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:05:00,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302954932] [2020-08-21 13:05:00,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:05:00,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:00,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:05:00,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:05:00,899 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 6 states. [2020-08-21 13:05:01,270 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:02,446 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:03,133 INFO L93 Difference]: Finished difference Result 335 states and 415 transitions. [2020-08-21 13:05:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:05:03,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 13:05:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:03,138 INFO L225 Difference]: With dead ends: 335 [2020-08-21 13:05:03,138 INFO L226 Difference]: Without dead ends: 241 [2020-08-21 13:05:03,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:05:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-21 13:05:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 198. [2020-08-21 13:05:03,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-08-21 13:05:03,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 225 transitions. [2020-08-21 13:05:03,191 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 225 transitions. Word has length 65 [2020-08-21 13:05:03,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:03,192 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 225 transitions. [2020-08-21 13:05:03,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:05:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 225 transitions. [2020-08-21 13:05:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:05:03,193 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:03,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:03,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:05:03,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1180966768, now seen corresponding path program 1 times [2020-08-21 13:05:03,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:03,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749800902] [2020-08-21 13:05:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,471 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:03,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:05:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:05:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:05:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:03,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749800902] [2020-08-21 13:05:03,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:03,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:05:03,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106756786] [2020-08-21 13:05:03,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:05:03,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:03,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:05:03,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:05:03,563 INFO L87 Difference]: Start difference. First operand 198 states and 225 transitions. Second operand 8 states. [2020-08-21 13:05:03,974 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:05,106 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:05,394 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:05,636 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:05,861 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:06,157 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:07,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:07,221 INFO L93 Difference]: Finished difference Result 592 states and 731 transitions. [2020-08-21 13:05:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:05:07,223 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-21 13:05:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:07,228 INFO L225 Difference]: With dead ends: 592 [2020-08-21 13:05:07,229 INFO L226 Difference]: Without dead ends: 418 [2020-08-21 13:05:07,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:05:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-08-21 13:05:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 351. [2020-08-21 13:05:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-21 13:05:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 400 transitions. [2020-08-21 13:05:07,315 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 400 transitions. Word has length 79 [2020-08-21 13:05:07,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:07,315 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 400 transitions. [2020-08-21 13:05:07,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:05:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 400 transitions. [2020-08-21 13:05:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 13:05:07,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:07,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:07,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:05:07,318 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:07,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1165038356, now seen corresponding path program 1 times [2020-08-21 13:05:07,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:07,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80113241] [2020-08-21 13:05:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,585 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:07,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:05:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 13:05:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 13:05:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:07,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80113241] [2020-08-21 13:05:07,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:07,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:05:07,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230793421] [2020-08-21 13:05:07,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:05:07,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:07,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:05:07,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:05:07,695 INFO L87 Difference]: Start difference. First operand 351 states and 400 transitions. Second operand 9 states. [2020-08-21 13:05:08,103 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:09,171 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:09,400 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:09,664 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:09,936 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:10,207 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:11,217 INFO L93 Difference]: Finished difference Result 460 states and 580 transitions. [2020-08-21 13:05:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:05:11,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-21 13:05:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:11,224 INFO L225 Difference]: With dead ends: 460 [2020-08-21 13:05:11,224 INFO L226 Difference]: Without dead ends: 457 [2020-08-21 13:05:11,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:05:11,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-08-21 13:05:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 351. [2020-08-21 13:05:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-08-21 13:05:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 399 transitions. [2020-08-21 13:05:11,299 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 399 transitions. Word has length 83 [2020-08-21 13:05:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:11,300 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 399 transitions. [2020-08-21 13:05:11,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:05:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 399 transitions. [2020-08-21 13:05:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 13:05:11,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:11,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:11,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:05:11,302 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:11,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:11,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1066260182, now seen corresponding path program 1 times [2020-08-21 13:05:11,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:11,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44434794] [2020-08-21 13:05:11,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,541 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:11,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:05:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:05:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:05:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:11,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44434794] [2020-08-21 13:05:11,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:11,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:05:11,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816881784] [2020-08-21 13:05:11,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:05:11,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:11,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:05:11,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:05:11,731 INFO L87 Difference]: Start difference. First operand 351 states and 399 transitions. Second operand 9 states. [2020-08-21 13:05:12,673 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:05:12,915 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:05:13,161 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:13,395 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:14,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:14,352 INFO L93 Difference]: Finished difference Result 788 states and 970 transitions. [2020-08-21 13:05:14,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:05:14,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 13:05:14,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:14,358 INFO L225 Difference]: With dead ends: 788 [2020-08-21 13:05:14,358 INFO L226 Difference]: Without dead ends: 461 [2020-08-21 13:05:14,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:05:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-21 13:05:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 361. [2020-08-21 13:05:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-08-21 13:05:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 409 transitions. [2020-08-21 13:05:14,424 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 409 transitions. Word has length 84 [2020-08-21 13:05:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:14,425 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 409 transitions. [2020-08-21 13:05:14,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:05:14,425 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 409 transitions. [2020-08-21 13:05:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 13:05:14,426 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:14,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:14,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:05:14,427 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:14,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:14,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1088892436, now seen corresponding path program 1 times [2020-08-21 13:05:14,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:14,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384044655] [2020-08-21 13:05:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,697 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:14,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:05:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:05:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:05:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:14,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384044655] [2020-08-21 13:05:14,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:14,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:05:14,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111703360] [2020-08-21 13:05:14,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:05:14,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:14,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:05:14,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:05:14,838 INFO L87 Difference]: Start difference. First operand 361 states and 409 transitions. Second operand 11 states. [2020-08-21 13:05:15,295 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:15,535 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:15,753 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:16,355 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:16,602 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:16,841 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:05:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:17,913 INFO L93 Difference]: Finished difference Result 812 states and 1010 transitions. [2020-08-21 13:05:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:05:17,914 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-21 13:05:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:17,918 INFO L225 Difference]: With dead ends: 812 [2020-08-21 13:05:17,919 INFO L226 Difference]: Without dead ends: 475 [2020-08-21 13:05:17,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:05:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-08-21 13:05:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 369. [2020-08-21 13:05:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-08-21 13:05:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 417 transitions. [2020-08-21 13:05:17,988 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 417 transitions. Word has length 84 [2020-08-21 13:05:17,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:17,988 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 417 transitions. [2020-08-21 13:05:17,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:05:17,989 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 417 transitions. [2020-08-21 13:05:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 13:05:17,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:17,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:17,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:05:17,991 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2114384435, now seen corresponding path program 1 times [2020-08-21 13:05:17,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:17,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418888603] [2020-08-21 13:05:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,270 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:05:18,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:05:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:05:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:05:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:05:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:05:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:05:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:05:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:05:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:05:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:05:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 13:05:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 13:05:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:05:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:05:18,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418888603] [2020-08-21 13:05:18,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:05:18,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:05:18,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150271575] [2020-08-21 13:05:18,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:05:18,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:05:18,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:05:18,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:05:18,393 INFO L87 Difference]: Start difference. First operand 369 states and 417 transitions. Second operand 7 states. [2020-08-21 13:05:18,789 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:19,488 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:05:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:05:21,411 INFO L93 Difference]: Finished difference Result 1154 states and 1484 transitions. [2020-08-21 13:05:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:05:21,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-21 13:05:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:05:21,417 INFO L225 Difference]: With dead ends: 1154 [2020-08-21 13:05:21,418 INFO L226 Difference]: Without dead ends: 809 [2020-08-21 13:05:21,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:05:21,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-08-21 13:05:21,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 689. [2020-08-21 13:05:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-08-21 13:05:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 811 transitions. [2020-08-21 13:05:21,558 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 811 transitions. Word has length 84 [2020-08-21 13:05:21,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:05:21,560 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 811 transitions. [2020-08-21 13:05:21,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:05:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 811 transitions. [2020-08-21 13:05:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:05:21,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:05:21,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:05:21,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:05:21,566 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:05:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:05:21,567 INFO L82 PathProgramCache]: Analyzing trace with hash 166319437, now seen corresponding path program 1 times [2020-08-21 13:05:21,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:05:21,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192079620] [2020-08-21 13:05:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:05:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:05:21,635 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:05:21,636 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:05:21,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:05:21,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:05:21 BoogieIcfgContainer [2020-08-21 13:05:21,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:05:21,687 INFO L168 Benchmark]: Toolchain (without parser) took 29913.92 ms. Allocated memory was 147.3 MB in the beginning and 623.4 MB in the end (delta: 476.1 MB). Free memory was 100.9 MB in the beginning and 99.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 477.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:21,690 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:05:21,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.90 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 100.7 MB in the beginning and 171.8 MB in the end (delta: -71.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:21,694 INFO L168 Benchmark]: Boogie Preprocessor took 106.17 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 167.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:21,695 INFO L168 Benchmark]: RCFGBuilder took 1229.20 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.8 MB in the beginning and 198.2 MB in the end (delta: -30.3 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:21,695 INFO L168 Benchmark]: TraceAbstraction took 27879.73 ms. Allocated memory was 237.5 MB in the beginning and 623.4 MB in the end (delta: 385.9 MB). Free memory was 198.2 MB in the beginning and 99.1 MB in the end (delta: 99.1 MB). Peak memory consumption was 484.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:05:21,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.90 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 100.7 MB in the beginning and 171.8 MB in the end (delta: -71.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.17 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 167.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1229.20 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.8 MB in the beginning and 198.2 MB in the end (delta: -30.3 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27879.73 ms. Allocated memory was 237.5 MB in the beginning and 623.4 MB in the end (delta: 385.9 MB). Free memory was 198.2 MB in the beginning and 99.1 MB in the end (delta: 99.1 MB). Peak memory consumption was 484.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] splverifierCounter = 0 [L776] COND TRUE 1 [L778] COND TRUE splverifierCounter < 4 [L784] tmp = __VERIFIER_nondet_int() [L786] COND TRUE \read(tmp) [L788] CALL waterRise() [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 [L788] RET waterRise() [L794] tmp___0 = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp___0) [L798] CALL changeMethaneLevel() [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 [L798] RET changeMethaneLevel() [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND FALSE !(\read(tmp___2)) [L812] tmp___1 = __VERIFIER_nondet_int() [L814] COND TRUE \read(tmp___1) [L821] CALL timeShift() [L587] COND FALSE !(\read(pumpRunning)) [L594] COND TRUE \read(systemActive) [L596] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__highWaterSensor() [L616] int tmp ; [L619] COND TRUE ! pumpRunning [L621] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L923] int retValue_acc ; [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L621] RET, EXPR isHighWaterLevel() [L621] tmp = isHighWaterLevel() [L623] COND TRUE \read(tmp) [L625] CALL activatePump() [L670] pumpRunning = 1 [L625] RET activatePump() [L660] RET processEnvironment__wrappee__highWaterSensor() [L596] RET processEnvironment() [L602] CALL __utac_acc__Specification1_spec__1() [L183] int tmp ; [L184] int tmp___0 ; [L188] CALL, EXPR isMethaneLevelCritical() [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); [L188] RET, EXPR isMethaneLevelCritical() [L188] tmp = isMethaneLevelCritical() [L190] COND TRUE \read(tmp) [L192] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L192] RET, EXPR isPumpRunning() [L192] tmp___0 = isPumpRunning() [L194] COND TRUE \read(tmp___0) [L196] CALL __automaton_fail() [L837] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1051 SDtfs, 1883 SDslu, 987 SDs, 0 SdLazy, 4943 SolverSat, 1281 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=689occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 627 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 615 ConstructedInterpolants, 0 QuantifiedInterpolants, 190312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...