/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:14:37,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:14:37,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:14:37,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:14:37,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:14:37,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:14:37,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:14:37,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:14:37,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:14:37,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:14:37,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:14:37,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:14:37,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:14:37,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:14:37,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:14:37,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:14:37,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:14:37,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:14:37,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:14:37,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:14:37,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:14:37,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:14:37,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:14:37,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:14:37,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:14:37,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:14:37,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:14:37,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:14:37,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:14:37,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:14:37,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:14:37,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:14:37,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:14:37,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:14:37,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:14:37,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:14:37,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:14:37,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:14:37,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:14:37,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:14:37,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:14:37,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:14:37,709 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:14:37,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:14:37,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:14:37,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:14:37,712 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:14:37,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:14:37,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:14:37,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:14:37,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:14:37,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:14:37,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:14:37,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:14:37,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:14:37,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:14:37,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:14:37,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:14:37,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:14:37,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:14:37,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:14:37,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:14:37,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:14:37,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:14:37,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:14:37,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:14:37,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:14:37,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:14:37,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:14:37,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:14:37,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:14:37,717 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 [2020-08-18 15:14:38,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:14:38,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:14:38,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:14:38,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:14:38,036 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:14:38,036 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-18 15:14:38,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5128a0c1f/7abf58fdf5764c51b63d65638b29efbf/FLAG436fcb79d [2020-08-18 15:14:38,604 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:14:38,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-18 15:14:38,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5128a0c1f/7abf58fdf5764c51b63d65638b29efbf/FLAG436fcb79d [2020-08-18 15:14:38,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5128a0c1f/7abf58fdf5764c51b63d65638b29efbf [2020-08-18 15:14:38,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:14:38,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:14:38,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:14:38,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:14:38,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:14:38,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:14:38" (1/1) ... [2020-08-18 15:14:38,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d31571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:38, skipping insertion in model container [2020-08-18 15:14:38,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:14:38" (1/1) ... [2020-08-18 15:14:38,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:14:39,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:14:39,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:14:39,433 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:14:39,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:14:39,609 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:14:39,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39 WrapperNode [2020-08-18 15:14:39,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:14:39,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:14:39,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:14:39,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:14:39,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (1/1) ... [2020-08-18 15:14:39,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (1/1) ... [2020-08-18 15:14:39,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (1/1) ... [2020-08-18 15:14:39,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (1/1) ... [2020-08-18 15:14:39,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (1/1) ... [2020-08-18 15:14:39,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (1/1) ... [2020-08-18 15:14:39,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (1/1) ... [2020-08-18 15:14:39,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:14:39,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:14:39,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:14:39,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:14:39,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:14:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:14:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:14:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:14:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:14:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:14:39,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:14:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:14:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:14:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:14:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:14:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:14:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:14:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:14:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:14:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 15:14:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:14:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:14:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:14:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:14:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:14:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 15:14:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 15:14:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 15:14:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:14:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:14:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:14:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:14:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:14:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:14:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 15:14:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 15:14:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:14:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:14:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:14:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:14:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:14:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:14:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:14:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:14:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:14:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:14:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:14:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:14:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:14:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:14:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:14:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:14:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:14:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:14:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:14:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:14:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:14:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:14:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:14:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:14:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:14:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:14:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:14:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:14:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:14:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:14:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:14:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:14:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 15:14:39,799 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 15:14:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:14:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:14:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:14:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:14:39,800 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:14:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:14:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 15:14:39,801 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:14:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:14:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:14:39,802 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:14:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 15:14:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:14:39,803 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:14:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 15:14:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 15:14:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:14:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:14:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:14:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:14:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:14:39,804 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:14:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:14:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:14:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:14:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:14:39,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:14:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:14:39,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:14:40,885 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:14:40,885 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:14:40,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:14:40 BoogieIcfgContainer [2020-08-18 15:14:40,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:14:40,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:14:40,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:14:40,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:14:40,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:14:38" (1/3) ... [2020-08-18 15:14:40,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb7e66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:14:40, skipping insertion in model container [2020-08-18 15:14:40,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:14:39" (2/3) ... [2020-08-18 15:14:40,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb7e66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:14:40, skipping insertion in model container [2020-08-18 15:14:40,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:14:40" (3/3) ... [2020-08-18 15:14:40,899 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-08-18 15:14:40,910 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:14:40,918 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:14:40,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:14:40,954 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:14:40,954 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:14:40,955 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:14:40,955 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:14:40,955 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:14:40,955 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:14:40,955 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:14:40,956 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:14:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-18 15:14:40,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 15:14:40,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:40,987 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] [2020-08-18 15:14:40,987 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:40,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:40,994 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-08-18 15:14:41,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:41,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460105143] [2020-08-18 15:14:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:41,745 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:41,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:41,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:41,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:41,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:41,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:41,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:14:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:41,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:14:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:41,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:14:41,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460105143] [2020-08-18 15:14:41,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:41,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:14:41,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467254529] [2020-08-18 15:14:41,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:14:41,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:41,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:14:41,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:14:41,858 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-18 15:14:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:43,086 INFO L93 Difference]: Finished difference Result 304 states and 394 transitions. [2020-08-18 15:14:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:14:43,088 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 15:14:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:43,115 INFO L225 Difference]: With dead ends: 304 [2020-08-18 15:14:43,115 INFO L226 Difference]: Without dead ends: 165 [2020-08-18 15:14:43,122 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 [2020-08-18 15:14:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-18 15:14:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-08-18 15:14:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 15:14:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-18 15:14:43,230 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-18 15:14:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:43,231 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-18 15:14:43,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:14:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-18 15:14:43,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 15:14:43,241 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:43,241 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] [2020-08-18 15:14:43,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:14:43,242 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:43,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:43,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-08-18 15:14:43,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:43,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256772129] [2020-08-18 15:14:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:43,658 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:43,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:43,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:43,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:43,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:43,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:14:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:14:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:14:43,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256772129] [2020-08-18 15:14:43,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:43,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:14:43,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541761435] [2020-08-18 15:14:43,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:14:43,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:43,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:14:43,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:14:43,737 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-18 15:14:44,149 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:44,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:44,959 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2020-08-18 15:14:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:14:44,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 15:14:44,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:44,964 INFO L225 Difference]: With dead ends: 224 [2020-08-18 15:14:44,964 INFO L226 Difference]: Without dead ends: 149 [2020-08-18 15:14:44,965 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 [2020-08-18 15:14:44,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-18 15:14:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-08-18 15:14:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-18 15:14:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-18 15:14:45,005 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-18 15:14:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:45,005 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-18 15:14:45,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:14:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-18 15:14:45,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:14:45,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:45,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:14:45,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:14:45,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:45,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-08-18 15:14:45,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:45,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534818917] [2020-08-18 15:14:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,354 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:14:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:14:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:14:45,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534818917] [2020-08-18 15:14:45,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:45,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:14:45,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999350117] [2020-08-18 15:14:45,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:14:45,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:14:45,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:14:45,439 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-18 15:14:45,802 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:46,099 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:46,370 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:46,603 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:47,320 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:48,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:48,969 INFO L93 Difference]: Finished difference Result 418 states and 512 transitions. [2020-08-18 15:14:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:14:48,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 15:14:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:48,975 INFO L225 Difference]: With dead ends: 418 [2020-08-18 15:14:48,975 INFO L226 Difference]: Without dead ends: 321 [2020-08-18 15:14:48,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:14:48,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-08-18 15:14:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2020-08-18 15:14:49,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-18 15:14:49,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2020-08-18 15:14:49,043 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 52 [2020-08-18 15:14:49,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:49,043 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2020-08-18 15:14:49,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:14:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2020-08-18 15:14:49,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 15:14:49,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:49,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:14:49,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:14:49,047 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:49,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-08-18 15:14:49,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:49,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575494675] [2020-08-18 15:14:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,341 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:14:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:14:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:14:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:14:49,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575494675] [2020-08-18 15:14:49,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:49,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:14:49,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180342686] [2020-08-18 15:14:49,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:14:49,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:49,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:14:49,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:14:49,458 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 8 states. [2020-08-18 15:14:49,957 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:51,017 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:51,366 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:51,639 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:51,879 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:52,240 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:53,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:53,252 INFO L93 Difference]: Finished difference Result 793 states and 1017 transitions. [2020-08-18 15:14:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:14:53,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 15:14:53,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:53,260 INFO L225 Difference]: With dead ends: 793 [2020-08-18 15:14:53,260 INFO L226 Difference]: Without dead ends: 573 [2020-08-18 15:14:53,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 15:14:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-18 15:14:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 443. [2020-08-18 15:14:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-18 15:14:53,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 530 transitions. [2020-08-18 15:14:53,376 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 530 transitions. Word has length 57 [2020-08-18 15:14:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:53,377 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 530 transitions. [2020-08-18 15:14:53,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:14:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 530 transitions. [2020-08-18 15:14:53,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 15:14:53,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:53,380 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] [2020-08-18 15:14:53,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:14:53,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:53,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:53,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-08-18 15:14:53,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:53,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104536152] [2020-08-18 15:14:53,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,694 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:14:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 15:14:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:14:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 15:14:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:14:53,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104536152] [2020-08-18 15:14:53,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:53,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:14:53,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925924747] [2020-08-18 15:14:53,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:14:53,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:53,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:14:53,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:14:53,810 INFO L87 Difference]: Start difference. First operand 443 states and 530 transitions. Second operand 9 states. [2020-08-18 15:14:54,253 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:55,238 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:55,558 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:55,830 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:14:56,472 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:56,750 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:14:57,636 INFO L93 Difference]: Finished difference Result 1254 states and 1644 transitions. [2020-08-18 15:14:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 15:14:57,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-18 15:14:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:14:57,644 INFO L225 Difference]: With dead ends: 1254 [2020-08-18 15:14:57,644 INFO L226 Difference]: Without dead ends: 835 [2020-08-18 15:14:57,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:14:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-08-18 15:14:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 671. [2020-08-18 15:14:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-08-18 15:14:57,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 815 transitions. [2020-08-18 15:14:57,789 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 815 transitions. Word has length 61 [2020-08-18 15:14:57,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:14:57,789 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 815 transitions. [2020-08-18 15:14:57,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:14:57,789 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 815 transitions. [2020-08-18 15:14:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 15:14:57,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:14:57,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:14:57,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:14:57,794 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:14:57,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:14:57,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-08-18 15:14:57,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:14:57,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104065795] [2020-08-18 15:14:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:14:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,038 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:14:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:14:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:14:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:14:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:14:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:14:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:14:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:14:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:14:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:14:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:14:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:14:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:14:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 15:14:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 15:14:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:14:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:14:58,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104065795] [2020-08-18 15:14:58,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:14:58,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:14:58,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305999752] [2020-08-18 15:14:58,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:14:58,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:14:58,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:14:58,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:14:58,185 INFO L87 Difference]: Start difference. First operand 671 states and 815 transitions. Second operand 9 states. [2020-08-18 15:14:58,682 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:14:59,677 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:14:59,920 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:00,175 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:00,438 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:02,316 INFO L93 Difference]: Finished difference Result 2315 states and 3234 transitions. [2020-08-18 15:15:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 15:15:02,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 15:15:02,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:02,336 INFO L225 Difference]: With dead ends: 2315 [2020-08-18 15:15:02,336 INFO L226 Difference]: Without dead ends: 1668 [2020-08-18 15:15:02,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:15:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-18 15:15:02,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1271. [2020-08-18 15:15:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-18 15:15:02,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1540 transitions. [2020-08-18 15:15:02,634 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1540 transitions. Word has length 94 [2020-08-18 15:15:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:02,635 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1540 transitions. [2020-08-18 15:15:02,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:15:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1540 transitions. [2020-08-18 15:15:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 15:15:02,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:02,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:02,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:15:02,643 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:02,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-08-18 15:15:02,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:02,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347816674] [2020-08-18 15:15:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:02,896 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:02,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:02,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:15:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:15:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:02,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:03,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 15:15:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 15:15:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:15:03,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347816674] [2020-08-18 15:15:03,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:03,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 15:15:03,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342823583] [2020-08-18 15:15:03,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 15:15:03,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:03,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 15:15:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:15:03,034 INFO L87 Difference]: Start difference. First operand 1271 states and 1540 transitions. Second operand 9 states. [2020-08-18 15:15:04,166 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:04,407 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 15:15:04,665 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:04,893 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:05,997 INFO L93 Difference]: Finished difference Result 2944 states and 3942 transitions. [2020-08-18 15:15:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:15:05,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-18 15:15:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:06,012 INFO L225 Difference]: With dead ends: 2944 [2020-08-18 15:15:06,013 INFO L226 Difference]: Without dead ends: 1697 [2020-08-18 15:15:06,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:15:06,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-08-18 15:15:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1311. [2020-08-18 15:15:06,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-08-18 15:15:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1580 transitions. [2020-08-18 15:15:06,233 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1580 transitions. Word has length 94 [2020-08-18 15:15:06,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:06,234 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1580 transitions. [2020-08-18 15:15:06,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 15:15:06,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1580 transitions. [2020-08-18 15:15:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 15:15:06,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:06,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:06,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 15:15:06,238 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:06,239 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2020-08-18 15:15:06,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:06,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598699927] [2020-08-18 15:15:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,493 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:06,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 15:15:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:15:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 15:15:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 15:15:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 15:15:06,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598699927] [2020-08-18 15:15:06,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:15:06,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 15:15:06,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417357056] [2020-08-18 15:15:06,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 15:15:06,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:06,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 15:15:06,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 15:15:06,647 INFO L87 Difference]: Start difference. First operand 1311 states and 1580 transitions. Second operand 11 states. [2020-08-18 15:15:07,208 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:07,439 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:07,693 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:08,376 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:08,623 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:08,858 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:15:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:09,957 INFO L93 Difference]: Finished difference Result 2566 states and 3327 transitions. [2020-08-18 15:15:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 15:15:09,962 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-18 15:15:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:09,970 INFO L225 Difference]: With dead ends: 2566 [2020-08-18 15:15:09,970 INFO L226 Difference]: Without dead ends: 1279 [2020-08-18 15:15:09,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 15:15:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-18 15:15:10,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1029. [2020-08-18 15:15:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-08-18 15:15:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1212 transitions. [2020-08-18 15:15:10,157 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1212 transitions. Word has length 94 [2020-08-18 15:15:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:10,157 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1212 transitions. [2020-08-18 15:15:10,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 15:15:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1212 transitions. [2020-08-18 15:15:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-18 15:15:10,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:10,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:10,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 15:15:10,162 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2020-08-18 15:15:10,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:10,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954485720] [2020-08-18 15:15:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,430 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:15:10,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:15:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:15:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:15:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:15:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:15:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 15:15:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:15:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:15:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 15:15:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:15:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:15:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 15:15:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 15:15:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:15:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 15:15:10,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954485720] [2020-08-18 15:15:10,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:15:10,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 15:15:10,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865849271] [2020-08-18 15:15:10,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 15:15:10,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:15:10,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 15:15:10,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:15:10,716 INFO L87 Difference]: Start difference. First operand 1029 states and 1212 transitions. Second operand 17 states. [2020-08-18 15:15:11,500 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:11,824 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:12,082 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:12,336 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 15:15:12,942 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:15:13,561 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:13,959 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:14,989 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:15,280 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:15,604 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:15,849 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:15:16,388 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 15:15:16,934 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-18 15:15:18,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:15:18,266 INFO L93 Difference]: Finished difference Result 2268 states and 2829 transitions. [2020-08-18 15:15:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 15:15:18,267 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-08-18 15:15:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:15:18,275 INFO L225 Difference]: With dead ends: 2268 [2020-08-18 15:15:18,276 INFO L226 Difference]: Without dead ends: 1263 [2020-08-18 15:15:18,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-18 15:15:18,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-08-18 15:15:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1007. [2020-08-18 15:15:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-08-18 15:15:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1163 transitions. [2020-08-18 15:15:18,467 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1163 transitions. Word has length 98 [2020-08-18 15:15:18,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:15:18,468 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1163 transitions. [2020-08-18 15:15:18,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 15:15:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1163 transitions. [2020-08-18 15:15:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 15:15:18,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:15:18,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:15:18,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 15:15:18,478 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:15:18,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:15:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-08-18 15:15:18,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:15:18,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189565049] [2020-08-18 15:15:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:15:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:15:18,580 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:15:18,580 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:15:18,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 15:15:18,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:15:18 BoogieIcfgContainer [2020-08-18 15:15:18,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:15:18,653 INFO L168 Benchmark]: Toolchain (without parser) took 39693.95 ms. Allocated memory was 139.5 MB in the beginning and 701.0 MB in the end (delta: 561.5 MB). Free memory was 101.7 MB in the beginning and 166.3 MB in the end (delta: -64.6 MB). Peak memory consumption was 496.9 MB. Max. memory is 7.1 GB. [2020-08-18 15:15:18,662 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:15:18,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.14 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 169.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:15:18,665 INFO L168 Benchmark]: Boogie Preprocessor took 98.81 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 165.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:15:18,669 INFO L168 Benchmark]: RCFGBuilder took 1181.12 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 164.9 MB in the beginning and 194.7 MB in the end (delta: -29.8 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:15:18,671 INFO L168 Benchmark]: TraceAbstraction took 37757.83 ms. Allocated memory was 237.0 MB in the beginning and 701.0 MB in the end (delta: 464.0 MB). Free memory was 194.7 MB in the beginning and 166.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 492.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:15:18,680 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.14 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 169.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.81 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 165.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1181.12 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 164.9 MB in the beginning and 194.7 MB in the end (delta: -29.8 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37757.83 ms. Allocated memory was 237.0 MB in the beginning and 701.0 MB in the end (delta: 464.0 MB). Free memory was 194.7 MB in the beginning and 166.3 MB in the end (delta: 28.4 MB). Peak memory consumption was 492.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; [L924] int retValue_acc ; [L925] int tmp ; [L929] FCALL select_helpers() [L930] FCALL select_features() [L931] CALL, EXPR valid_product() [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); [L931] RET, EXPR valid_product() [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) [L935] FCALL setup() [L936] CALL runTest() [L918] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) [L443] CALL waterRise() [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 [L443] RET waterRise() [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND FALSE !(\read(pumpRunning)) [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND TRUE ! pumpRunning [L540] CALL, EXPR isHighWaterLevel() [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; [L656] CALL, EXPR isHighWaterSensorDry() [L773] int retValue_acc ; [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); [L656] RET, EXPR isHighWaterSensorDry() [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); [L540] RET, EXPR isHighWaterLevel() [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) [L544] CALL activatePump() [L569] int tmp ; [L573] CALL, EXPR isMethaneAlarm() [L594] int retValue_acc ; [L598] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L598] RET, EXPR isMethaneLevelCritical() [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); [L573] RET, EXPR isMethaneAlarm() [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) [L579] CALL activatePump__wrappee__highWaterSensor() [L563] pumpRunning = 1 [L579] RET activatePump__wrappee__highWaterSensor() [L544] RET activatePump() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) [L521] RET __utac_acc__Specification1_spec__1() [L478] RET timeShift() [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) [L453] CALL changeMethaneLevel() [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 [L453] RET changeMethaneLevel() [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND TRUE \read(pumpRunning) [L508] CALL lowerWaterLevel() [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 [L508] RET lowerWaterLevel() [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND FALSE !(! pumpRunning) [L553] FCALL processEnvironment__wrappee__base() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) [L797] CALL, EXPR isPumpRunning() [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); [L797] RET, EXPR isPumpRunning() [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) [L801] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 31.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1086 SDtfs, 2271 SDslu, 1554 SDs, 0 SdLazy, 7793 SolverSat, 1524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1311occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 1723 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 777 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 196729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 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...