/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:42:54,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:42:54,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:42:54,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:42:54,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:42:54,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:42:54,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:42:54,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:42:54,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:42:54,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:42:54,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:42:54,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:42:54,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:42:54,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:42:54,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:42:54,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:42:54,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:42:54,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:42:54,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:42:54,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:42:54,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:42:54,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:42:54,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:42:54,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:42:54,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:42:54,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:42:54,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:42:54,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:42:54,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:42:54,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:42:54,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:42:54,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:42:54,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:42:54,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:42:54,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:42:54,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:42:54,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:42:54,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:42:54,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:42:54,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:42:54,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:42:54,666 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 [2020-08-22 03:42:54,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:42:54,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:42:54,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:42:54,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:42:54,710 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:42:54,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:42:54,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:42:54,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:42:54,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:42:54,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:42:54,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:42:54,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:42:54,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:42:54,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:42:54,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:42:54,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:42:54,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:42:54,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:42:54,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:42:54,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:42:54,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:42:54,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:42:54,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:42:54,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:42:54,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:42:54,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:42:54,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:42:54,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:42:54,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:42:54,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:42:55,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:42:55,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:42:55,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:42:55,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:42:55,053 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:42:55,053 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-08-22 03:42:55,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/681275475/0cd0a07f02d64116b6bd635123f1addd/FLAGb70e796cf [2020-08-22 03:42:55,550 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:42:55,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product34.cil.c [2020-08-22 03:42:55,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/681275475/0cd0a07f02d64116b6bd635123f1addd/FLAGb70e796cf [2020-08-22 03:42:55,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/681275475/0cd0a07f02d64116b6bd635123f1addd [2020-08-22 03:42:55,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:42:55,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:42:55,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:42:55,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:42:55,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:42:55,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:42:55" (1/1) ... [2020-08-22 03:42:55,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b83777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:55, skipping insertion in model container [2020-08-22 03:42:55,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:42:55" (1/1) ... [2020-08-22 03:42:55,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:42:56,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:42:56,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:42:56,605 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:42:56,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:42:56,708 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:42:56,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56 WrapperNode [2020-08-22 03:42:56,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:42:56,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:42:56,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:42:56,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:42:56,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (1/1) ... [2020-08-22 03:42:56,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (1/1) ... [2020-08-22 03:42:56,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (1/1) ... [2020-08-22 03:42:56,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (1/1) ... [2020-08-22 03:42:56,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (1/1) ... [2020-08-22 03:42:56,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (1/1) ... [2020-08-22 03:42:56,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (1/1) ... [2020-08-22 03:42:56,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:42:56,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:42:56,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:42:56,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:42:56,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (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 [2020-08-22 03:42:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:42:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:42:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:42:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:42:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:42:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:42:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:42:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:42:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:42:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:42:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:42:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:42:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:42:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:42:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:42:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:42:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:42:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:42:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:42:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:42:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:42:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:42:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:42:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 03:42:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:42:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:42:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:42:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:42:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:42:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:42:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:42:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:42:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:42:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:42:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:42:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:42:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:42:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:42:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:42:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:42:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:42:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:42:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:42:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:42:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 03:42:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:42:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:42:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:42:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:42:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:42:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:42:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:42:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:42:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:42:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:42:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:42:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:42:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:42:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:42:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 03:42:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:42:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:42:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:42:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:42:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:42:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:42:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:42:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:42:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:42:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:42:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:42:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:42:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:42:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:42:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:42:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:42:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:42:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:42:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:42:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:42:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:42:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:42:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:42:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:42:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:42:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:42:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:42:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:42:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:42:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:42:57,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:42:57,975 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:42:57,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:42:57 BoogieIcfgContainer [2020-08-22 03:42:57,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:42:57,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:42:57,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:42:57,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:42:57,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:42:55" (1/3) ... [2020-08-22 03:42:57,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ea7e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:42:57, skipping insertion in model container [2020-08-22 03:42:57,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:42:56" (2/3) ... [2020-08-22 03:42:57,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ea7e04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:42:57, skipping insertion in model container [2020-08-22 03:42:57,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:42:57" (3/3) ... [2020-08-22 03:42:57,993 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2020-08-22 03:42:58,003 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:42:58,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:42:58,025 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:42:58,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:42:58,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:42:58,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:42:58,044 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:42:58,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:42:58,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:42:58,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:42:58,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:42:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-08-22 03:42:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 03:42:58,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:42:58,074 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] [2020-08-22 03:42:58,075 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:42:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:42:58,081 INFO L82 PathProgramCache]: Analyzing trace with hash -368094870, now seen corresponding path program 1 times [2020-08-22 03:42:58,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:42:58,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255553997] [2020-08-22 03:42:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:42:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:42:58,725 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:42:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:42:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:42:58,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:42:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:42:58,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:42:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:42:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:42:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:42:58,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:42:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:42:58,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:42:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:42:58,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:42:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:42:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:42:58,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255553997] [2020-08-22 03:42:58,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:42:58,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:42:58,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070849001] [2020-08-22 03:42:58,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:42:58,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:42:58,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:42:58,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:42:58,858 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-08-22 03:42:59,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:42:59,917 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-22 03:42:59,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:42:59,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 03:42:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:42:59,934 INFO L225 Difference]: With dead ends: 258 [2020-08-22 03:42:59,935 INFO L226 Difference]: Without dead ends: 140 [2020-08-22 03:42:59,940 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 [2020-08-22 03:42:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-22 03:43:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-22 03:43:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-22 03:43:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-22 03:43:00,026 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-22 03:43:00,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:00,027 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-22 03:43:00,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:43:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-22 03:43:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 03:43:00,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:00,031 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] [2020-08-22 03:43:00,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:43:00,031 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1630578526, now seen corresponding path program 1 times [2020-08-22 03:43:00,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:00,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506945728] [2020-08-22 03:43:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:00,372 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:00,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:00,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:00,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:00,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:00,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:43:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:00,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506945728] [2020-08-22 03:43:00,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:00,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:43:00,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100935796] [2020-08-22 03:43:00,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:43:00,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:43:00,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:43:00,449 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-22 03:43:00,864 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:01,466 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-22 03:43:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:43:01,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 03:43:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:01,470 INFO L225 Difference]: With dead ends: 187 [2020-08-22 03:43:01,470 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 03:43:01,472 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 [2020-08-22 03:43:01,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 03:43:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 03:43:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 03:43:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-22 03:43:01,511 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-22 03:43:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:01,511 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-22 03:43:01,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:43:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-22 03:43:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 03:43:01,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:01,526 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] [2020-08-22 03:43:01,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:43:01,526 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:01,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1910957979, now seen corresponding path program 1 times [2020-08-22 03:43:01,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:01,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102745068] [2020-08-22 03:43:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:01,929 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:01,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:02,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:02,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:02,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:02,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:43:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:43:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:02,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102745068] [2020-08-22 03:43:02,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:02,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:43:02,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167822304] [2020-08-22 03:43:02,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:43:02,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:02,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:43:02,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:43:02,051 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-22 03:43:02,461 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:02,758 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:03,002 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:03,269 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:04,239 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-22 03:43:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 03:43:04,240 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 03:43:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:04,244 INFO L225 Difference]: With dead ends: 200 [2020-08-22 03:43:04,244 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 03:43:04,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:04,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 03:43:04,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 03:43:04,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 03:43:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-22 03:43:04,275 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-22 03:43:04,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:04,275 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-22 03:43:04,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:43:04,276 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-22 03:43:04,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 03:43:04,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:04,277 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] [2020-08-22 03:43:04,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:43:04,277 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:04,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:04,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2015382800, now seen corresponding path program 1 times [2020-08-22 03:43:04,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:04,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606646583] [2020-08-22 03:43:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,547 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:43:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 03:43:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 03:43:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:04,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606646583] [2020-08-22 03:43:04,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:04,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:43:04,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127441473] [2020-08-22 03:43:04,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:43:04,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:04,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:43:04,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:43:04,659 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-22 03:43:04,996 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:06,107 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:06,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:06,586 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-22 03:43:06,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:43:06,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-22 03:43:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:06,590 INFO L225 Difference]: With dead ends: 288 [2020-08-22 03:43:06,590 INFO L226 Difference]: Without dead ends: 212 [2020-08-22 03:43:06,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 03:43:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-22 03:43:06,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-22 03:43:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-22 03:43:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-22 03:43:06,633 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-22 03:43:06,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:06,634 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-22 03:43:06,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:43:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-22 03:43:06,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 03:43:06,636 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:06,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:43:06,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:43:06,636 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:06,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2082850905, now seen corresponding path program 1 times [2020-08-22 03:43:06,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:06,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474566905] [2020-08-22 03:43:06,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:06,926 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:06,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:06,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:06,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:06,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 03:43:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 03:43:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:43:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:43:07,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474566905] [2020-08-22 03:43:07,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:43:07,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 03:43:07,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741051291] [2020-08-22 03:43:07,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:07,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:07,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:07,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:07,061 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 12 states. [2020-08-22 03:43:07,588 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:07,939 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:08,178 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:08,397 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:08,902 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:09,734 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:09,998 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:10,251 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:10,512 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:10,782 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:11,039 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:11,849 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:12,127 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:12,685 INFO L93 Difference]: Finished difference Result 604 states and 790 transitions. [2020-08-22 03:43:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 03:43:12,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 74 [2020-08-22 03:43:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:12,693 INFO L225 Difference]: With dead ends: 604 [2020-08-22 03:43:12,694 INFO L226 Difference]: Without dead ends: 459 [2020-08-22 03:43:12,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 03:43:12,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-08-22 03:43:12,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 397. [2020-08-22 03:43:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-22 03:43:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 467 transitions. [2020-08-22 03:43:12,789 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 467 transitions. Word has length 74 [2020-08-22 03:43:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:12,790 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 467 transitions. [2020-08-22 03:43:12,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:12,790 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 467 transitions. [2020-08-22 03:43:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-08-22 03:43:12,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:12,794 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 03:43:12,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:43:12,794 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:12,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2117624429, now seen corresponding path program 1 times [2020-08-22 03:43:12,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:12,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954371325] [2020-08-22 03:43:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,109 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:43:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 03:43:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 03:43:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-22 03:43:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 03:43:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 03:43:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 03:43:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 03:43:13,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954371325] [2020-08-22 03:43:13,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:13,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:43:13,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425212212] [2020-08-22 03:43:13,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:43:13,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:13,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:43:13,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:43:13,372 INFO L87 Difference]: Start difference. First operand 397 states and 467 transitions. Second operand 13 states. [2020-08-22 03:43:14,074 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:14,657 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:15,183 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:15,464 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 03:43:15,736 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:15,974 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:16,207 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:16,455 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 03:43:16,753 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:17,017 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:18,500 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:18,746 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 03:43:18,988 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:19,222 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:19,735 INFO L93 Difference]: Finished difference Result 831 states and 1058 transitions. [2020-08-22 03:43:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 03:43:19,735 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 119 [2020-08-22 03:43:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:19,740 INFO L225 Difference]: With dead ends: 831 [2020-08-22 03:43:19,740 INFO L226 Difference]: Without dead ends: 458 [2020-08-22 03:43:19,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 03:43:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-08-22 03:43:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 391. [2020-08-22 03:43:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-22 03:43:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 461 transitions. [2020-08-22 03:43:19,824 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 461 transitions. Word has length 119 [2020-08-22 03:43:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:19,825 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 461 transitions. [2020-08-22 03:43:19,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:43:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 461 transitions. [2020-08-22 03:43:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-22 03:43:19,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:19,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-08-22 03:43:19,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:43:19,828 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:19,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1622369259, now seen corresponding path program 1 times [2020-08-22 03:43:19,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:19,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217623601] [2020-08-22 03:43:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,102 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:43:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 03:43:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 03:43:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 03:43:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 03:43:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 03:43:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 03:43:20,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217623601] [2020-08-22 03:43:20,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:20,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:43:20,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55857188] [2020-08-22 03:43:20,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:20,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:20,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:20,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:20,342 INFO L87 Difference]: Start difference. First operand 391 states and 461 transitions. Second operand 12 states. [2020-08-22 03:43:21,104 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:21,304 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:21,533 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:22,070 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:22,330 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:22,547 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:23,232 INFO L93 Difference]: Finished difference Result 709 states and 866 transitions. [2020-08-22 03:43:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 03:43:23,233 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-22 03:43:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:23,236 INFO L225 Difference]: With dead ends: 709 [2020-08-22 03:43:23,236 INFO L226 Difference]: Without dead ends: 342 [2020-08-22 03:43:23,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 03:43:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-08-22 03:43:23,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 316. [2020-08-22 03:43:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-22 03:43:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 370 transitions. [2020-08-22 03:43:23,308 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 370 transitions. Word has length 111 [2020-08-22 03:43:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:23,308 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 370 transitions. [2020-08-22 03:43:23,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:23,308 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 370 transitions. [2020-08-22 03:43:23,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 03:43:23,310 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:23,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-08-22 03:43:23,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 03:43:23,311 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:23,311 INFO L82 PathProgramCache]: Analyzing trace with hash 782485200, now seen corresponding path program 1 times [2020-08-22 03:43:23,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:23,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786025087] [2020-08-22 03:43:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,622 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:23,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:43:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 03:43:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 03:43:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 03:43:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 03:43:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 03:43:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 03:43:23,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786025087] [2020-08-22 03:43:23,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:23,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 03:43:23,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269431834] [2020-08-22 03:43:23,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 03:43:23,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:23,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 03:43:23,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 03:43:23,766 INFO L87 Difference]: Start difference. First operand 316 states and 370 transitions. Second operand 12 states. [2020-08-22 03:43:24,190 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:43:24,976 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:25,456 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 03:43:25,723 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:25,973 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:26,208 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:26,472 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:26,722 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:27,688 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:27,956 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:28,432 INFO L93 Difference]: Finished difference Result 739 states and 931 transitions. [2020-08-22 03:43:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 03:43:28,432 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-22 03:43:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:28,437 INFO L225 Difference]: With dead ends: 739 [2020-08-22 03:43:28,437 INFO L226 Difference]: Without dead ends: 505 [2020-08-22 03:43:28,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2020-08-22 03:43:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2020-08-22 03:43:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 421. [2020-08-22 03:43:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-08-22 03:43:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 500 transitions. [2020-08-22 03:43:28,552 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 500 transitions. Word has length 115 [2020-08-22 03:43:28,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:28,552 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 500 transitions. [2020-08-22 03:43:28,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 03:43:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 500 transitions. [2020-08-22 03:43:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 03:43:28,561 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:28,562 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2020-08-22 03:43:28,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 03:43:28,562 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:28,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1084902701, now seen corresponding path program 2 times [2020-08-22 03:43:28,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:28,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238403898] [2020-08-22 03:43:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,885 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:43:28,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:43:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:43:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:43:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:43:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 03:43:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:43:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 03:43:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 03:43:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:28,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 03:43:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:43:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 03:43:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:43:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 03:43:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 03:43:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 03:43:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:43:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 03:43:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 03:43:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:43:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-22 03:43:29,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238403898] [2020-08-22 03:43:29,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:43:29,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 03:43:29,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501212232] [2020-08-22 03:43:29,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 03:43:29,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:43:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 03:43:29,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:43:29,123 INFO L87 Difference]: Start difference. First operand 421 states and 500 transitions. Second operand 14 states. [2020-08-22 03:43:30,244 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:31,044 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:31,846 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:32,120 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:32,352 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:32,582 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:32,845 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:33,094 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 03:43:33,914 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:43:34,156 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:43:35,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:43:35,085 INFO L93 Difference]: Finished difference Result 1024 states and 1341 transitions. [2020-08-22 03:43:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 03:43:35,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-22 03:43:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:43:35,092 INFO L225 Difference]: With dead ends: 1024 [2020-08-22 03:43:35,092 INFO L226 Difference]: Without dead ends: 685 [2020-08-22 03:43:35,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 03:43:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-08-22 03:43:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 422. [2020-08-22 03:43:35,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-08-22 03:43:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 502 transitions. [2020-08-22 03:43:35,194 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 502 transitions. Word has length 155 [2020-08-22 03:43:35,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:43:35,196 INFO L479 AbstractCegarLoop]: Abstraction has 422 states and 502 transitions. [2020-08-22 03:43:35,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 03:43:35,196 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 502 transitions. [2020-08-22 03:43:35,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 03:43:35,198 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:43:35,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 03:43:35,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 03:43:35,199 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:43:35,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:43:35,199 INFO L82 PathProgramCache]: Analyzing trace with hash 218697075, now seen corresponding path program 3 times [2020-08-22 03:43:35,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:43:35,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469926529] [2020-08-22 03:43:35,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:43:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:43:35,277 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:43:35,277 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:43:35,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 03:43:35,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:43:35 BoogieIcfgContainer [2020-08-22 03:43:35,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:43:35,336 INFO L168 Benchmark]: Toolchain (without parser) took 39378.34 ms. Allocated memory was 139.5 MB in the beginning and 612.9 MB in the end (delta: 473.4 MB). Free memory was 101.5 MB in the beginning and 441.7 MB in the end (delta: -340.2 MB). Peak memory consumption was 133.2 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:35,339 INFO L168 Benchmark]: CDTParser took 0.84 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. [2020-08-22 03:43:35,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.96 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 101.3 MB in the beginning and 171.7 MB in the end (delta: -70.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:35,343 INFO L168 Benchmark]: Boogie Preprocessor took 105.84 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:35,343 INFO L168 Benchmark]: RCFGBuilder took 1168.14 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 167.6 MB in the beginning and 199.1 MB in the end (delta: -31.5 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:35,353 INFO L168 Benchmark]: TraceAbstraction took 37340.85 ms. Allocated memory was 237.0 MB in the beginning and 612.9 MB in the end (delta: 375.9 MB). Free memory was 199.1 MB in the beginning and 441.7 MB in the end (delta: -242.6 MB). Peak memory consumption was 133.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:43:35,355 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 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 757.96 ms. Allocated memory was 139.5 MB in the beginning and 205.0 MB in the end (delta: 65.5 MB). Free memory was 101.3 MB in the beginning and 171.7 MB in the end (delta: -70.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.84 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1168.14 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 167.6 MB in the beginning and 199.1 MB in the end (delta: -31.5 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37340.85 ms. Allocated memory was 237.0 MB in the beginning and 612.9 MB in the end (delta: 375.9 MB). Free memory was 199.1 MB in the beginning and 441.7 MB in the end (delta: -242.6 MB). Peak memory consumption was 133.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L282] int pumpRunning = 0; [L283] int systemActive = 1; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L150] int retValue_acc ; [L151] int tmp ; [L155] FCALL select_helpers() [L156] FCALL select_features() [L157] CALL, EXPR valid_product() [L199] int retValue_acc ; [L202] retValue_acc = 1 [L203] return (retValue_acc); [L157] RET, EXPR valid_product() [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) [L161] FCALL setup() [L162] CALL runTest() [L141] CALL test() [L210] int splverifierCounter ; [L211] int tmp ; [L212] int tmp___0 ; [L213] int tmp___1 ; [L214] int tmp___2 ; [L217] splverifierCounter = 0 [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND TRUE \read(tmp) [L231] CALL waterRise() [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 [L231] RET waterRise() [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) [L264] CALL timeShift() [L289] COND FALSE !(\read(pumpRunning)) [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND TRUE ! pumpRunning [L323] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L522] int retValue_acc ; [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L323] RET, EXPR isHighWaterLevel() [L323] tmp = isHighWaterLevel() [L325] COND TRUE \read(tmp) [L327] CALL activatePump() [L346] pumpRunning = 1 [L327] RET activatePump() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L304] RET __utac_acc__Specification4_spec__1() [L264] RET timeShift() [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) [L264] CALL timeShift() [L289] COND TRUE \read(pumpRunning) [L291] CALL lowerWaterLevel() [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 [L291] RET lowerWaterLevel() [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(! pumpRunning) [L336] FCALL processEnvironment__wrappee__base() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) [L304] RET __utac_acc__Specification4_spec__1() [L264] RET timeShift() [L219] COND TRUE 1 [L221] COND TRUE splverifierCounter < 4 [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___2)) [L255] tmp___1 = __VERIFIER_nondet_int() [L257] COND TRUE \read(tmp___1) [L264] CALL timeShift() [L289] COND TRUE \read(pumpRunning) [L291] CALL lowerWaterLevel() [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 [L291] RET lowerWaterLevel() [L296] COND TRUE \read(systemActive) [L298] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(! pumpRunning) [L336] FCALL processEnvironment__wrappee__base() [L298] RET processEnvironment() [L304] CALL __utac_acc__Specification4_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR getWaterLevel() [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); [L49] RET, EXPR getWaterLevel() [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L53] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L540] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 37.2s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 31.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 973 SDtfs, 2437 SDslu, 1394 SDs, 0 SdLazy, 6748 SolverSat, 1755 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 439 GetRequests, 275 SyntacticMatches, 10 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 16.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=422occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 624 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 930 NumberOfCodeBlocks, 930 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 286969 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 141/169 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...