/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=WIDESTAMONGSMALL --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_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:45:07,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:45:07,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:45:07,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:45:07,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:45:07,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:45:07,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:45:07,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:45:07,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:45:07,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:45:07,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:45:07,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:45:07,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:45:07,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:45:07,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:45:07,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:45:07,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:45:07,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:45:07,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:45:07,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:45:07,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:45:07,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:45:07,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:45:07,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:45:07,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:45:07,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:45:07,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:45:07,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:45:07,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:45:07,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:45:07,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:45:07,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:45:07,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:45:07,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:45:07,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:45:07,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:45:07,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:45:07,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:45:07,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:45:07,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:45:07,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:45:07,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:45:07,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:45:07,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:45:07,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:45:07,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:45:07,704 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:45:07,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:45:07,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:45:07,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:45:07,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:45:07,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:45:07,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:45:07,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:45:07,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:45:07,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:45:07,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:45:07,706 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:45:07,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:45:07,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:45:07,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:45:07,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:45:07,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:45:07,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:45:07,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:45:07,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:45:07,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:45:07,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:45:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:45:07,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:45:07,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:45:07,709 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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:45:08,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:45:08,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:45:08,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:45:08,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:45:08,051 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:45:08,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-21 22:45:08,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee206dcc3/3248088b1a4f4ad89ac74e2a0e41b300/FLAG79fff2d88 [2020-08-21 22:45:08,667 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:45:08,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-08-21 22:45:08,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee206dcc3/3248088b1a4f4ad89ac74e2a0e41b300/FLAG79fff2d88 [2020-08-21 22:45:08,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee206dcc3/3248088b1a4f4ad89ac74e2a0e41b300 [2020-08-21 22:45:08,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:45:08,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:45:08,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:45:08,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:45:08,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:45:08,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:45:08" (1/1) ... [2020-08-21 22:45:08,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63832a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:08, skipping insertion in model container [2020-08-21 22:45:08,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:45:08" (1/1) ... [2020-08-21 22:45:08,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:45:09,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:45:09,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:45:09,567 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:45:09,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:45:09,675 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:45:09,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09 WrapperNode [2020-08-21 22:45:09,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:45:09,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:45:09,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:45:09,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:45:09,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (1/1) ... [2020-08-21 22:45:09,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (1/1) ... [2020-08-21 22:45:09,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (1/1) ... [2020-08-21 22:45:09,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (1/1) ... [2020-08-21 22:45:09,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (1/1) ... [2020-08-21 22:45:09,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (1/1) ... [2020-08-21 22:45:09,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (1/1) ... [2020-08-21 22:45:09,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:45:09,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:45:09,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:45:09,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:45:09,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:45:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:45:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:45:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:45:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:45:09,849 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:45:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:45:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:45:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:45:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:45:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:45:09,850 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:45:09,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:45:09,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:45:09,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:45:09,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:45:09,851 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:45:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:45:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:45:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:45:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:45:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:45:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:45:09,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:45:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 22:45:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:45:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:45:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:45:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:45:09,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:45:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:45:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:45:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:45:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:45:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:45:09,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:45:09,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:45:09,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:45:09,855 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:45:09,855 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:45:09,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:45:09,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:45:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:45:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:45:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:45:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:45:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:45:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:45:09,856 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:45:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:45:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:45:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:45:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:45:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:45:09,857 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:45:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:45:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:45:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 22:45:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:45:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:45:09,858 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:45:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:45:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:45:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:45:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:45:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:45:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:45:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:45:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:45:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:45:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:45:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:45:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:45:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:45:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:45:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:45:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:45:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:45:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:45:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:45:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:45:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:45:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:45:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:45:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:45:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:45:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:45:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:45:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:45:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:45:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:45:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:45:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:45:11,204 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:45:11,204 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:45:11,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:45:11 BoogieIcfgContainer [2020-08-21 22:45:11,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:45:11,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:45:11,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:45:11,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:45:11,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:45:08" (1/3) ... [2020-08-21 22:45:11,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba3ae5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:45:11, skipping insertion in model container [2020-08-21 22:45:11,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:09" (2/3) ... [2020-08-21 22:45:11,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba3ae5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:45:11, skipping insertion in model container [2020-08-21 22:45:11,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:45:11" (3/3) ... [2020-08-21 22:45:11,225 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-08-21 22:45:11,238 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:45:11,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:45:11,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:45:11,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:45:11,287 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:45:11,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:45:11,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:45:11,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:45:11,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:45:11,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:45:11,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:45:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 22:45:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 22:45:11,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:11,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:11,324 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:11,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:11,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2058113087, now seen corresponding path program 1 times [2020-08-21 22:45:11,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:11,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130180143] [2020-08-21 22:45:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:12,080 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:12,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:12,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:12,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:45:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:45:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:12,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130180143] [2020-08-21 22:45:12,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:12,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:45:12,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522878597] [2020-08-21 22:45:12,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:45:12,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:12,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:45:12,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:45:12,180 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 3 states. [2020-08-21 22:45:13,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:13,300 INFO L93 Difference]: Finished difference Result 295 states and 384 transitions. [2020-08-21 22:45:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:45:13,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 22:45:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:13,317 INFO L225 Difference]: With dead ends: 295 [2020-08-21 22:45:13,318 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 22:45:13,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:45:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 22:45:13,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2020-08-21 22:45:13,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 22:45:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-08-21 22:45:13,439 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-08-21 22:45:13,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:13,440 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-08-21 22:45:13,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:45:13,440 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-08-21 22:45:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 22:45:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:13,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:13,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:45:13,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1232914971, now seen corresponding path program 1 times [2020-08-21 22:45:13,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:13,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708774162] [2020-08-21 22:45:13,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:13,855 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:13,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:13,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:13,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:13,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:13,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:13,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:45:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:13,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:13,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708774162] [2020-08-21 22:45:13,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:13,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:45:13,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849030208] [2020-08-21 22:45:13,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:45:13,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:13,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:45:13,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:45:13,900 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 4 states. [2020-08-21 22:45:14,381 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:15,158 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2020-08-21 22:45:15,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:45:15,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 22:45:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:15,164 INFO L225 Difference]: With dead ends: 219 [2020-08-21 22:45:15,165 INFO L226 Difference]: Without dead ends: 144 [2020-08-21 22:45:15,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:45:15,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-21 22:45:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 117. [2020-08-21 22:45:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-21 22:45:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-08-21 22:45:15,217 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-08-21 22:45:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:15,217 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-08-21 22:45:15,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:45:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-08-21 22:45:15,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 22:45:15,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:15,230 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] [2020-08-21 22:45:15,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:45:15,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:15,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:15,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1264843506, now seen corresponding path program 1 times [2020-08-21 22:45:15,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:15,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659998073] [2020-08-21 22:45:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:15,621 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:15,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:15,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:15,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:15,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:15,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:15,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:45:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:15,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:45:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:15,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659998073] [2020-08-21 22:45:15,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:15,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:45:15,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258829131] [2020-08-21 22:45:15,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:45:15,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:45:15,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:45:15,754 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 8 states. [2020-08-21 22:45:16,132 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:16,473 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:16,714 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:16,960 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:17,668 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:19,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:19,208 INFO L93 Difference]: Finished difference Result 403 states and 495 transitions. [2020-08-21 22:45:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:45:19,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 22:45:19,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:19,216 INFO L225 Difference]: With dead ends: 403 [2020-08-21 22:45:19,217 INFO L226 Difference]: Without dead ends: 310 [2020-08-21 22:45:19,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:45:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-21 22:45:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 240. [2020-08-21 22:45:19,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-21 22:45:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2020-08-21 22:45:19,278 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 51 [2020-08-21 22:45:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:19,278 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2020-08-21 22:45:19,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:45:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2020-08-21 22:45:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 22:45:19,280 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:19,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:19,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:45:19,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:19,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:19,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1557328557, now seen corresponding path program 1 times [2020-08-21 22:45:19,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:19,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153216049] [2020-08-21 22:45:19,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,571 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:19,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:45:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:45:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:45:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:19,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153216049] [2020-08-21 22:45:19,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:19,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:45:19,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538577922] [2020-08-21 22:45:19,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:45:19,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:19,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:45:19,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:45:19,678 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand 8 states. [2020-08-21 22:45:20,099 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:21,207 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:21,556 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:21,832 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:22,074 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:22,401 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:23,392 INFO L93 Difference]: Finished difference Result 778 states and 999 transitions. [2020-08-21 22:45:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:45:23,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 22:45:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:23,400 INFO L225 Difference]: With dead ends: 778 [2020-08-21 22:45:23,400 INFO L226 Difference]: Without dead ends: 562 [2020-08-21 22:45:23,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:45:23,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-08-21 22:45:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 435. [2020-08-21 22:45:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-21 22:45:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 522 transitions. [2020-08-21 22:45:23,532 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 522 transitions. Word has length 57 [2020-08-21 22:45:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:23,533 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 522 transitions. [2020-08-21 22:45:23,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:45:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 522 transitions. [2020-08-21 22:45:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 22:45:23,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:23,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:23,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:45:23,536 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:23,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:23,537 INFO L82 PathProgramCache]: Analyzing trace with hash 2005186865, now seen corresponding path program 1 times [2020-08-21 22:45:23,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:23,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074165606] [2020-08-21 22:45:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,816 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:45:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:45:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:45:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:45:23,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074165606] [2020-08-21 22:45:23,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:23,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:23,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495145033] [2020-08-21 22:45:23,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:23,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:23,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:23,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:23,942 INFO L87 Difference]: Start difference. First operand 435 states and 522 transitions. Second operand 9 states. [2020-08-21 22:45:24,423 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:25,471 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:25,780 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:26,049 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:26,687 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:26,958 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:27,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:27,744 INFO L93 Difference]: Finished difference Result 1224 states and 1608 transitions. [2020-08-21 22:45:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:45:27,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-21 22:45:27,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:27,752 INFO L225 Difference]: With dead ends: 1224 [2020-08-21 22:45:27,753 INFO L226 Difference]: Without dead ends: 813 [2020-08-21 22:45:27,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:45:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-08-21 22:45:27,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 655. [2020-08-21 22:45:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-08-21 22:45:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 799 transitions. [2020-08-21 22:45:27,887 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 799 transitions. Word has length 61 [2020-08-21 22:45:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:27,888 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 799 transitions. [2020-08-21 22:45:27,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 799 transitions. [2020-08-21 22:45:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:45:27,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:27,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:27,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:45:27,892 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:27,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:27,893 INFO L82 PathProgramCache]: Analyzing trace with hash 90269024, now seen corresponding path program 1 times [2020-08-21 22:45:27,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:27,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800941654] [2020-08-21 22:45:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,192 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:28,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:45:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:45:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:28,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800941654] [2020-08-21 22:45:28,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:28,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:28,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922581955] [2020-08-21 22:45:28,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:28,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:28,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:28,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:28,385 INFO L87 Difference]: Start difference. First operand 655 states and 799 transitions. Second operand 9 states. [2020-08-21 22:45:28,901 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:29,748 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:29,983 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:45:30,276 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:30,535 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:45:32,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:32,318 INFO L93 Difference]: Finished difference Result 2244 states and 3141 transitions. [2020-08-21 22:45:32,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:45:32,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 22:45:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:32,333 INFO L225 Difference]: With dead ends: 2244 [2020-08-21 22:45:32,333 INFO L226 Difference]: Without dead ends: 1613 [2020-08-21 22:45:32,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:45:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2020-08-21 22:45:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1239. [2020-08-21 22:45:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1239 states. [2020-08-21 22:45:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1508 transitions. [2020-08-21 22:45:32,712 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1508 transitions. Word has length 93 [2020-08-21 22:45:32,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:32,713 INFO L479 AbstractCegarLoop]: Abstraction has 1239 states and 1508 transitions. [2020-08-21 22:45:32,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:32,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1508 transitions. [2020-08-21 22:45:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:45:32,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:32,722 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:32,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:45:32,723 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:32,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:32,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1880670433, now seen corresponding path program 1 times [2020-08-21 22:45:32,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:32,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248300833] [2020-08-21 22:45:32,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,030 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:33,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:45:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:45:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:33,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248300833] [2020-08-21 22:45:33,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:33,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:33,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444018048] [2020-08-21 22:45:33,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:33,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:33,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:33,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:33,179 INFO L87 Difference]: Start difference. First operand 1239 states and 1508 transitions. Second operand 9 states. [2020-08-21 22:45:34,173 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:34,435 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:45:34,688 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:34,921 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:36,037 INFO L93 Difference]: Finished difference Result 2857 states and 3834 transitions. [2020-08-21 22:45:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:45:36,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 22:45:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:36,049 INFO L225 Difference]: With dead ends: 2857 [2020-08-21 22:45:36,049 INFO L226 Difference]: Without dead ends: 1642 [2020-08-21 22:45:36,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:45:36,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-08-21 22:45:36,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1279. [2020-08-21 22:45:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-21 22:45:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1548 transitions. [2020-08-21 22:45:36,239 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1548 transitions. Word has length 93 [2020-08-21 22:45:36,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:36,239 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1548 transitions. [2020-08-21 22:45:36,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:36,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1548 transitions. [2020-08-21 22:45:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:45:36,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:36,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:36,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:45:36,244 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:36,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:36,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1516903585, now seen corresponding path program 1 times [2020-08-21 22:45:36,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:36,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122454538] [2020-08-21 22:45:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,555 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:36,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:45:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-21 22:45:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:36,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122454538] [2020-08-21 22:45:36,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:36,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:45:36,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076180965] [2020-08-21 22:45:36,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:45:36,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:36,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:45:36,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:45:36,701 INFO L87 Difference]: Start difference. First operand 1279 states and 1548 transitions. Second operand 11 states. [2020-08-21 22:45:37,334 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:37,577 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:37,796 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:38,429 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:38,680 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:38,907 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:40,033 INFO L93 Difference]: Finished difference Result 2491 states and 3236 transitions. [2020-08-21 22:45:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:45:40,033 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 22:45:40,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:40,042 INFO L225 Difference]: With dead ends: 2491 [2020-08-21 22:45:40,042 INFO L226 Difference]: Without dead ends: 1236 [2020-08-21 22:45:40,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:45:40,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-08-21 22:45:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1005. [2020-08-21 22:45:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-08-21 22:45:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1188 transitions. [2020-08-21 22:45:40,281 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1188 transitions. Word has length 93 [2020-08-21 22:45:40,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:40,282 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1188 transitions. [2020-08-21 22:45:40,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:45:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1188 transitions. [2020-08-21 22:45:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 22:45:40,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:40,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:40,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:45:40,288 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:40,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1451570632, now seen corresponding path program 1 times [2020-08-21 22:45:40,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:40,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348644084] [2020-08-21 22:45:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,579 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:45:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:45:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:45:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:45:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-21 22:45:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:45:40,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348644084] [2020-08-21 22:45:40,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:45:40,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 22:45:40,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624552481] [2020-08-21 22:45:40,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 22:45:40,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:40,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 22:45:40,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:45:40,823 INFO L87 Difference]: Start difference. First operand 1005 states and 1188 transitions. Second operand 17 states. [2020-08-21 22:45:41,775 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:42,096 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:42,344 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:42,597 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:43,209 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:43,783 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:44,162 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:45,175 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:45,450 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:45,875 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:46,144 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:46,689 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 22:45:47,243 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 22:45:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:48,476 INFO L93 Difference]: Finished difference Result 2201 states and 2748 transitions. [2020-08-21 22:45:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 22:45:48,478 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-21 22:45:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:48,485 INFO L225 Difference]: With dead ends: 2201 [2020-08-21 22:45:48,485 INFO L226 Difference]: Without dead ends: 1220 [2020-08-21 22:45:48,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 22:45:48,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2020-08-21 22:45:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 983. [2020-08-21 22:45:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-08-21 22:45:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1139 transitions. [2020-08-21 22:45:48,676 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1139 transitions. Word has length 97 [2020-08-21 22:45:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:48,676 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1139 transitions. [2020-08-21 22:45:48,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 22:45:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1139 transitions. [2020-08-21 22:45:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 22:45:48,682 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:48,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:48,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:45:48,683 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:48,684 INFO L82 PathProgramCache]: Analyzing trace with hash -914965907, now seen corresponding path program 1 times [2020-08-21 22:45:48,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:48,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730852476] [2020-08-21 22:45:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:48,984 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:48,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:45:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:45:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:45:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-21 22:45:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-21 22:45:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 22:45:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-21 22:45:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 22:45:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 22:45:49,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730852476] [2020-08-21 22:45:49,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:45:49,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 22:45:49,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608421028] [2020-08-21 22:45:49,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:49,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:49,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:49,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:49,135 INFO L87 Difference]: Start difference. First operand 983 states and 1139 transitions. Second operand 9 states. [2020-08-21 22:45:50,075 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:51,657 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:52,387 INFO L93 Difference]: Finished difference Result 2643 states and 3463 transitions. [2020-08-21 22:45:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 22:45:52,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-21 22:45:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:52,400 INFO L225 Difference]: With dead ends: 2643 [2020-08-21 22:45:52,400 INFO L226 Difference]: Without dead ends: 1980 [2020-08-21 22:45:52,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-08-21 22:45:52,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-21 22:45:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1593. [2020-08-21 22:45:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-08-21 22:45:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1869 transitions. [2020-08-21 22:45:52,794 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1869 transitions. Word has length 132 [2020-08-21 22:45:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:52,794 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 1869 transitions. [2020-08-21 22:45:52,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1869 transitions. [2020-08-21 22:45:52,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-21 22:45:52,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:52,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:52,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:45:52,803 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:52,803 INFO L82 PathProgramCache]: Analyzing trace with hash -405492817, now seen corresponding path program 1 times [2020-08-21 22:45:52,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:52,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444019406] [2020-08-21 22:45:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:45:52,880 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:45:52,880 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:45:52,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:45:52,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:45:52 BoogieIcfgContainer [2020-08-21 22:45:52,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:45:52,941 INFO L168 Benchmark]: Toolchain (without parser) took 43980.22 ms. Allocated memory was 141.0 MB in the beginning and 782.2 MB in the end (delta: 641.2 MB). Free memory was 103.2 MB in the beginning and 691.8 MB in the end (delta: -588.7 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:52,942 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:45:52,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.25 ms. Allocated memory was 141.0 MB in the beginning and 230.2 MB in the end (delta: 89.1 MB). Free memory was 103.0 MB in the beginning and 206.2 MB in the end (delta: -103.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:52,944 INFO L168 Benchmark]: Boogie Preprocessor took 95.32 ms. Allocated memory is still 230.2 MB. Free memory was 206.2 MB in the beginning and 202.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:52,947 INFO L168 Benchmark]: RCFGBuilder took 1441.41 ms. Allocated memory is still 230.2 MB. Free memory was 202.5 MB in the beginning and 116.1 MB in the end (delta: 86.4 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:52,947 INFO L168 Benchmark]: TraceAbstraction took 41713.23 ms. Allocated memory was 230.2 MB in the beginning and 782.2 MB in the end (delta: 552.1 MB). Free memory was 115.2 MB in the beginning and 691.8 MB in the end (delta: -576.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:45:52,951 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 722.25 ms. Allocated memory was 141.0 MB in the beginning and 230.2 MB in the end (delta: 89.1 MB). Free memory was 103.0 MB in the beginning and 206.2 MB in the end (delta: -103.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.32 ms. Allocated memory is still 230.2 MB. Free memory was 206.2 MB in the beginning and 202.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1441.41 ms. Allocated memory is still 230.2 MB. Free memory was 202.5 MB in the beginning and 116.1 MB in the end (delta: 86.4 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41713.23 ms. Allocated memory was 230.2 MB in the beginning and 782.2 MB in the end (delta: 552.1 MB). Free memory was 115.2 MB in the beginning and 691.8 MB in the end (delta: -576.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L512] int retValue_acc ; [L513] int tmp ; [L517] FCALL select_helpers() [L518] FCALL select_features() [L519] CALL, EXPR valid_product() [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); [L519] RET, EXPR valid_product() [L519] tmp = valid_product() [L521] COND TRUE \read(tmp) [L523] FCALL setup() [L524] CALL runTest() [L503] CALL test() [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) [L356] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L356] RET waterRise() [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND FALSE !(\read(tmp___0)) [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L299] int retValue_acc ; [L300] int tmp ; [L301] int tmp___0 ; [L305] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L305] RET, EXPR isHighWaterSensorDry() [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] tmp___0 = 1 [L312] retValue_acc = tmp___0 [L313] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L218] int tmp ; [L222] CALL, EXPR isMethaneAlarm() [L243] int retValue_acc ; [L247] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L247] RET, EXPR isMethaneLevelCritical() [L247] retValue_acc = isMethaneLevelCritical() [L249] return (retValue_acc); [L222] RET, EXPR isMethaneAlarm() [L222] tmp = isMethaneAlarm() [L224] COND FALSE !(\read(tmp)) [L228] CALL activatePump__wrappee__highWaterSensor() [L212] pumpRunning = 1 [L228] RET activatePump__wrappee__highWaterSensor() [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND FALSE !(\read(tmp)) [L170] RET __utac_acc__Specification1_spec__1() [L389] RET timeShift() [L344] COND TRUE 1 [L346] COND TRUE splverifierCounter < 4 [L352] tmp = __VERIFIER_nondet_int() [L354] COND FALSE !(\read(tmp)) [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp___0) [L366] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L366] RET changeMethaneLevel() [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) [L389] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification1_spec__1() [L411] int tmp ; [L412] int tmp___0 ; [L416] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L416] RET, EXPR isMethaneLevelCritical() [L416] tmp = isMethaneLevelCritical() [L418] COND TRUE \read(tmp) [L420] CALL, EXPR isPumpRunning() [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] return (retValue_acc); [L420] RET, EXPR isPumpRunning() [L420] tmp___0 = isPumpRunning() [L422] COND TRUE \read(tmp___0) [L424] CALL __automaton_fail() [L405] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 34.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 2978 SDslu, 1540 SDs, 0 SdLazy, 8007 SolverSat, 2016 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1593occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 2008 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 247082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 37/42 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...