/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_spec5_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:35:06,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:35:06,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:35:06,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:35:06,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:35:06,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:35:06,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:35:06,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:35:06,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:35:06,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:35:06,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:35:06,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:35:06,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:35:06,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:35:06,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:35:06,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:35:06,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:35:06,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:35:06,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:35:06,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:35:06,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:35:06,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:35:06,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:35:06,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:35:06,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:35:06,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:35:06,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:35:06,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:35:06,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:35:06,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:35:06,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:35:06,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:35:06,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:35:06,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:35:06,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:35:06,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:35:06,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:35:06,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:35:06,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:35:06,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:35:06,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:35:06,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:35:06,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:35:06,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:35:06,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:35:06,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:35:06,722 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:35:06,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:35:06,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:35:06,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:35:06,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:35:06,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:35:06,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:35:06,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:35:06,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:35:06,723 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:35:06,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:35:06,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:35:06,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:35:06,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:35:06,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:35:06,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:35:06,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:35:06,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:35:06,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:35:06,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:35:06,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:35:06,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:35:06,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:35:06,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:35:06,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:35:06,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:35:07,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:35:07,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:35:07,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:35:07,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:35:07,074 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:35:07,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2020-08-22 04:35:07,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/656254c0a/254c04379e9c4ae99f369eb265ee539b/FLAGe33b734c0 [2020-08-22 04:35:07,641 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:35:07,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product58.cil.c [2020-08-22 04:35:07,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/656254c0a/254c04379e9c4ae99f369eb265ee539b/FLAGe33b734c0 [2020-08-22 04:35:07,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/656254c0a/254c04379e9c4ae99f369eb265ee539b [2020-08-22 04:35:07,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:35:07,994 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:35:07,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:35:07,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:35:07,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:35:08,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:35:07" (1/1) ... [2020-08-22 04:35:08,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37aeb972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08, skipping insertion in model container [2020-08-22 04:35:08,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:35:07" (1/1) ... [2020-08-22 04:35:08,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:35:08,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:35:08,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:35:08,515 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:35:08,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:35:08,646 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:35:08,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08 WrapperNode [2020-08-22 04:35:08,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:35:08,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:35:08,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:35:08,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:35:08,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (1/1) ... [2020-08-22 04:35:08,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (1/1) ... [2020-08-22 04:35:08,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (1/1) ... [2020-08-22 04:35:08,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (1/1) ... [2020-08-22 04:35:08,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (1/1) ... [2020-08-22 04:35:08,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (1/1) ... [2020-08-22 04:35:08,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (1/1) ... [2020-08-22 04:35:08,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:35:08,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:35:08,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:35:08,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:35:08,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:35:08,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:35:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:35:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:35:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:35:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:35:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:35:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:35:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:35:08,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:35:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:35:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:35:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:35:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:35:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:35:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:35:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:35:08,880 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:35:08,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:35:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:35:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:35:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:35:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:35:08,883 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:35:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 04:35:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:35:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:35:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:35:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:35:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:35:08,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:35:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 04:35:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 04:35:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:35:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:35:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:35:08,885 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:35:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:35:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:35:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:35:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:35:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:35:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:35:08,886 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:35:08,887 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:35:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:35:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:35:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 04:35:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:35:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:35:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:35:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 04:35:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 04:35:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 04:35:08,890 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:35:08,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:35:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:35:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:35:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:35:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:35:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:35:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:35:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:35:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:35:08,895 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:35:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:35:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:35:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:35:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:35:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:35:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:35:08,896 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:35:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:35:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 04:35:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:35:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:35:08,897 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:35:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:35:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:35:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:35:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 04:35:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-22 04:35:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:35:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:35:08,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:35:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:35:08,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:35:09,924 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:35:09,924 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:35:09,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:35:09 BoogieIcfgContainer [2020-08-22 04:35:09,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:35:09,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:35:09,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:35:09,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:35:09,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:35:07" (1/3) ... [2020-08-22 04:35:09,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b066f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:35:09, skipping insertion in model container [2020-08-22 04:35:09,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:35:08" (2/3) ... [2020-08-22 04:35:09,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b066f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:35:09, skipping insertion in model container [2020-08-22 04:35:09,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:35:09" (3/3) ... [2020-08-22 04:35:09,939 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product58.cil.c [2020-08-22 04:35:09,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:35:09,957 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:35:09,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:35:09,997 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:35:09,997 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:35:09,998 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:35:09,998 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:35:09,998 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:35:09,998 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:35:09,998 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:35:09,998 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:35:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2020-08-22 04:35:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 04:35:10,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:10,033 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] [2020-08-22 04:35:10,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:10,039 INFO L82 PathProgramCache]: Analyzing trace with hash -229262266, now seen corresponding path program 1 times [2020-08-22 04:35:10,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:10,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13530539] [2020-08-22 04:35:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,757 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:10,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:35:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:35:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:35:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:35:10,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13530539] [2020-08-22 04:35:10,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:10,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:35:10,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260497777] [2020-08-22 04:35:10,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:35:10,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:10,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:35:10,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:35:10,925 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 4 states. [2020-08-22 04:35:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:12,136 INFO L93 Difference]: Finished difference Result 345 states and 435 transitions. [2020-08-22 04:35:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:35:12,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 04:35:12,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:12,154 INFO L225 Difference]: With dead ends: 345 [2020-08-22 04:35:12,154 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 04:35:12,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:35:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 04:35:12,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 157. [2020-08-22 04:35:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-22 04:35:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2020-08-22 04:35:12,297 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 59 [2020-08-22 04:35:12,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:12,297 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2020-08-22 04:35:12,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:35:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2020-08-22 04:35:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 04:35:12,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:12,302 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] [2020-08-22 04:35:12,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:35:12,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:12,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:12,303 INFO L82 PathProgramCache]: Analyzing trace with hash -751857026, now seen corresponding path program 1 times [2020-08-22 04:35:12,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:12,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517352214] [2020-08-22 04:35:12,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,637 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:35:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:35:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:35:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:35:12,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517352214] [2020-08-22 04:35:12,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:12,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:35:12,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423086608] [2020-08-22 04:35:12,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:35:12,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:12,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:35:12,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:35:12,704 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand 5 states. [2020-08-22 04:35:13,179 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:14,137 INFO L93 Difference]: Finished difference Result 286 states and 343 transitions. [2020-08-22 04:35:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:35:14,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 04:35:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:14,148 INFO L225 Difference]: With dead ends: 286 [2020-08-22 04:35:14,149 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 04:35:14,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:35:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 04:35:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2020-08-22 04:35:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 04:35:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2020-08-22 04:35:14,188 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 60 [2020-08-22 04:35:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:14,189 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2020-08-22 04:35:14,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:35:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2020-08-22 04:35:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 04:35:14,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:14,191 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] [2020-08-22 04:35:14,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:35:14,191 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash -8533593, now seen corresponding path program 1 times [2020-08-22 04:35:14,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:14,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005731797] [2020-08-22 04:35:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,492 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:35:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:35:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 04:35:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:35:14,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005731797] [2020-08-22 04:35:14,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:14,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:35:14,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964782125] [2020-08-22 04:35:14,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:35:14,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:14,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:35:14,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:35:14,582 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand 9 states. [2020-08-22 04:35:15,050 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:15,330 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:15,580 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:15,835 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:17,248 INFO L93 Difference]: Finished difference Result 299 states and 362 transitions. [2020-08-22 04:35:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 04:35:17,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 04:35:17,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:17,254 INFO L225 Difference]: With dead ends: 299 [2020-08-22 04:35:17,254 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 04:35:17,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:35:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 04:35:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 148. [2020-08-22 04:35:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-22 04:35:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 169 transitions. [2020-08-22 04:35:17,295 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 169 transitions. Word has length 65 [2020-08-22 04:35:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:17,296 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 169 transitions. [2020-08-22 04:35:17,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:35:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 169 transitions. [2020-08-22 04:35:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:35:17,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:17,298 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] [2020-08-22 04:35:17,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:35:17,299 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:17,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2138732759, now seen corresponding path program 1 times [2020-08-22 04:35:17,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:17,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438112972] [2020-08-22 04:35:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,578 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:35:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:35:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 04:35:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 04:35:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:35:17,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438112972] [2020-08-22 04:35:17,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:17,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:35:17,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27511721] [2020-08-22 04:35:17,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:35:17,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:17,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:35:17,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:35:17,682 INFO L87 Difference]: Start difference. First operand 148 states and 169 transitions. Second operand 7 states. [2020-08-22 04:35:18,041 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:19,592 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:20,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:20,162 INFO L93 Difference]: Finished difference Result 403 states and 496 transitions. [2020-08-22 04:35:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:35:20,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-22 04:35:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:20,168 INFO L225 Difference]: With dead ends: 403 [2020-08-22 04:35:20,168 INFO L226 Difference]: Without dead ends: 283 [2020-08-22 04:35:20,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:35:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-22 04:35:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 237. [2020-08-22 04:35:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-22 04:35:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 270 transitions. [2020-08-22 04:35:20,227 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 270 transitions. Word has length 78 [2020-08-22 04:35:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:20,228 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 270 transitions. [2020-08-22 04:35:20,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:35:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 270 transitions. [2020-08-22 04:35:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 04:35:20,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:20,230 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] [2020-08-22 04:35:20,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:35:20,230 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2116914143, now seen corresponding path program 1 times [2020-08-22 04:35:20,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:20,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610458611] [2020-08-22 04:35:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,523 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:35:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:35:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 04:35:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 04:35:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 04:35:20,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610458611] [2020-08-22 04:35:20,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:20,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:35:20,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406689490] [2020-08-22 04:35:20,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:35:20,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:20,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:35:20,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:35:20,711 INFO L87 Difference]: Start difference. First operand 237 states and 270 transitions. Second operand 9 states. [2020-08-22 04:35:21,065 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:21,728 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:22,563 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:22,857 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:23,308 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:23,549 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:24,132 INFO L93 Difference]: Finished difference Result 491 states and 592 transitions. [2020-08-22 04:35:24,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 04:35:24,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-22 04:35:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:24,136 INFO L225 Difference]: With dead ends: 491 [2020-08-22 04:35:24,136 INFO L226 Difference]: Without dead ends: 282 [2020-08-22 04:35:24,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:35:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-22 04:35:24,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 236. [2020-08-22 04:35:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-08-22 04:35:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 267 transitions. [2020-08-22 04:35:24,182 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 267 transitions. Word has length 92 [2020-08-22 04:35:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:24,182 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 267 transitions. [2020-08-22 04:35:24,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:35:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 267 transitions. [2020-08-22 04:35:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 04:35:24,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:24,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:35:24,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:35:24,185 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:24,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:24,185 INFO L82 PathProgramCache]: Analyzing trace with hash 660673946, now seen corresponding path program 1 times [2020-08-22 04:35:24,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:24,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890426836] [2020-08-22 04:35:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,502 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:24,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:35:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:35:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:35:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 04:35:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:35:24,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890426836] [2020-08-22 04:35:24,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:24,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:35:24,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893111468] [2020-08-22 04:35:24,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:35:24,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:24,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:35:24,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:35:24,699 INFO L87 Difference]: Start difference. First operand 236 states and 267 transitions. Second operand 9 states. [2020-08-22 04:35:25,917 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:26,161 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 04:35:26,459 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:26,705 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:27,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:27,578 INFO L93 Difference]: Finished difference Result 491 states and 595 transitions. [2020-08-22 04:35:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:35:27,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-22 04:35:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:27,592 INFO L225 Difference]: With dead ends: 491 [2020-08-22 04:35:27,592 INFO L226 Difference]: Without dead ends: 283 [2020-08-22 04:35:27,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:35:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-22 04:35:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 241. [2020-08-22 04:35:27,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-08-22 04:35:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 272 transitions. [2020-08-22 04:35:27,642 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 272 transitions. Word has length 108 [2020-08-22 04:35:27,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:27,643 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 272 transitions. [2020-08-22 04:35:27,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:35:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 272 transitions. [2020-08-22 04:35:27,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 04:35:27,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:27,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:35:27,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:35:27,645 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:27,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1706020648, now seen corresponding path program 1 times [2020-08-22 04:35:27,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:27,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461008506] [2020-08-22 04:35:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:27,938 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:27,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:27,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:27,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:27,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:35:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:27,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:35:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:35:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 04:35:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:35:28,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461008506] [2020-08-22 04:35:28,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:28,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 04:35:28,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544391246] [2020-08-22 04:35:28,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:35:28,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:28,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:35:28,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:35:28,182 INFO L87 Difference]: Start difference. First operand 241 states and 272 transitions. Second operand 11 states. [2020-08-22 04:35:28,691 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:28,923 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:29,142 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:29,829 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:30,093 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:30,346 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:31,218 INFO L93 Difference]: Finished difference Result 501 states and 606 transitions. [2020-08-22 04:35:31,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:35:31,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-22 04:35:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:31,223 INFO L225 Difference]: With dead ends: 501 [2020-08-22 04:35:31,224 INFO L226 Difference]: Without dead ends: 288 [2020-08-22 04:35:31,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:35:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-08-22 04:35:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 245. [2020-08-22 04:35:31,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-08-22 04:35:31,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 276 transitions. [2020-08-22 04:35:31,266 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 276 transitions. Word has length 108 [2020-08-22 04:35:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:31,267 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 276 transitions. [2020-08-22 04:35:31,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:35:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 276 transitions. [2020-08-22 04:35:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-22 04:35:31,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:31,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:35:31,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:35:31,269 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:31,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:31,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1946560777, now seen corresponding path program 1 times [2020-08-22 04:35:31,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:31,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848291040] [2020-08-22 04:35:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,535 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:31,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:35:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 04:35:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:35:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 04:35:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:35:31,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848291040] [2020-08-22 04:35:31,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:31,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:35:31,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327760207] [2020-08-22 04:35:31,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:35:31,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:31,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:35:31,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:35:31,686 INFO L87 Difference]: Start difference. First operand 245 states and 276 transitions. Second operand 7 states. [2020-08-22 04:35:32,079 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:32,648 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:34,941 INFO L93 Difference]: Finished difference Result 683 states and 844 transitions. [2020-08-22 04:35:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:35:34,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-22 04:35:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:34,946 INFO L225 Difference]: With dead ends: 683 [2020-08-22 04:35:34,946 INFO L226 Difference]: Without dead ends: 466 [2020-08-22 04:35:34,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:35:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-08-22 04:35:35,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 424. [2020-08-22 04:35:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2020-08-22 04:35:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 492 transitions. [2020-08-22 04:35:35,038 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 492 transitions. Word has length 108 [2020-08-22 04:35:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:35,038 INFO L479 AbstractCegarLoop]: Abstraction has 424 states and 492 transitions. [2020-08-22 04:35:35,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:35:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 492 transitions. [2020-08-22 04:35:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-22 04:35:35,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:35,040 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:35:35,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:35:35,041 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:35,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash 79738257, now seen corresponding path program 1 times [2020-08-22 04:35:35,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:35,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553310071] [2020-08-22 04:35:35,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,362 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:35:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:35:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 04:35:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-22 04:35:35,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 04:35:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 04:35:35,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553310071] [2020-08-22 04:35:35,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:35:35,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:35:35,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587693795] [2020-08-22 04:35:35,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:35:35,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:35,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:35:35,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:35:35,599 INFO L87 Difference]: Start difference. First operand 424 states and 492 transitions. Second operand 12 states. [2020-08-22 04:35:36,137 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:36,776 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:37,839 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:38,149 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:38,395 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:35:38,694 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:38,963 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:35:40,305 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:40,576 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:41,392 INFO L93 Difference]: Finished difference Result 1180 states and 1453 transitions. [2020-08-22 04:35:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 04:35:41,394 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-22 04:35:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:41,401 INFO L225 Difference]: With dead ends: 1180 [2020-08-22 04:35:41,401 INFO L226 Difference]: Without dead ends: 858 [2020-08-22 04:35:41,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 04:35:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-22 04:35:41,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 736. [2020-08-22 04:35:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 736 states. [2020-08-22 04:35:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 846 transitions. [2020-08-22 04:35:41,537 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 846 transitions. Word has length 112 [2020-08-22 04:35:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:41,537 INFO L479 AbstractCegarLoop]: Abstraction has 736 states and 846 transitions. [2020-08-22 04:35:41,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:35:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 846 transitions. [2020-08-22 04:35:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-22 04:35:41,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:41,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:35:41,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:35:41,542 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:41,542 INFO L82 PathProgramCache]: Analyzing trace with hash -992810877, now seen corresponding path program 1 times [2020-08-22 04:35:41,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:41,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394110949] [2020-08-22 04:35:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,850 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:41,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:35:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:35:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:41,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:35:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:35:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-22 04:35:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 04:35:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 04:35:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:35:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 04:35:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 04:35:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 04:35:42,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394110949] [2020-08-22 04:35:42,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:35:42,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 04:35:42,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146317688] [2020-08-22 04:35:42,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 04:35:42,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:42,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 04:35:42,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:35:42,254 INFO L87 Difference]: Start difference. First operand 736 states and 846 transitions. Second operand 16 states. [2020-08-22 04:35:43,016 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 04:35:43,339 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:35:43,606 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:35:43,856 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 04:35:44,671 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 04:35:44,983 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 04:35:45,387 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-22 04:35:46,181 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 04:35:46,870 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:47,383 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 04:35:48,081 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 04:35:48,589 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-22 04:35:48,905 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:35:49,543 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:50,004 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 04:35:50,643 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-22 04:35:51,336 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 04:35:51,823 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-22 04:35:52,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:52,511 INFO L93 Difference]: Finished difference Result 1615 states and 1911 transitions. [2020-08-22 04:35:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-22 04:35:52,511 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-22 04:35:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:52,518 INFO L225 Difference]: With dead ends: 1615 [2020-08-22 04:35:52,518 INFO L226 Difference]: Without dead ends: 977 [2020-08-22 04:35:52,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 04:35:52,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-08-22 04:35:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 884. [2020-08-22 04:35:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-08-22 04:35:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1024 transitions. [2020-08-22 04:35:52,671 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1024 transitions. Word has length 174 [2020-08-22 04:35:52,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:52,671 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1024 transitions. [2020-08-22 04:35:52,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 04:35:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1024 transitions. [2020-08-22 04:35:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-22 04:35:52,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:52,679 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-22 04:35:52,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:35:52,680 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:52,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1611643875, now seen corresponding path program 1 times [2020-08-22 04:35:52,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:52,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952768840] [2020-08-22 04:35:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:52,956 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:52,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:52,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:35:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:35:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:35:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:35:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 04:35:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:35:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:35:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:35:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 04:35:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:35:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:35:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:35:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-22 04:35:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-22 04:35:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-22 04:35:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-22 04:35:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 04:35:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-22 04:35:53,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952768840] [2020-08-22 04:35:53,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:35:53,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 04:35:53,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579614756] [2020-08-22 04:35:53,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 04:35:53,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:53,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 04:35:53,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:35:53,540 INFO L87 Difference]: Start difference. First operand 884 states and 1024 transitions. Second operand 15 states. [2020-08-22 04:35:54,940 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:35:55,229 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:35:55,489 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:35:55,744 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:35:57,117 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:35:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:35:58,187 INFO L93 Difference]: Finished difference Result 2344 states and 2821 transitions. [2020-08-22 04:35:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:35:58,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-22 04:35:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:35:58,197 INFO L225 Difference]: With dead ends: 2344 [2020-08-22 04:35:58,197 INFO L226 Difference]: Without dead ends: 1393 [2020-08-22 04:35:58,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-22 04:35:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2020-08-22 04:35:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1174. [2020-08-22 04:35:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-08-22 04:35:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1389 transitions. [2020-08-22 04:35:58,457 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1389 transitions. Word has length 311 [2020-08-22 04:35:58,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:35:58,459 INFO L479 AbstractCegarLoop]: Abstraction has 1174 states and 1389 transitions. [2020-08-22 04:35:58,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 04:35:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1389 transitions. [2020-08-22 04:35:58,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-22 04:35:58,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:35:58,499 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:35:58,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:35:58,499 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:35:58,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:35:58,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1867648024, now seen corresponding path program 1 times [2020-08-22 04:35:58,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:35:58,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699192073] [2020-08-22 04:35:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:35:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,866 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:35:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:35:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:35:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:35:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:35:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:35:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 04:35:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:58,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:35:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 04:35:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:35:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:35:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 04:35:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:35:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 04:35:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:35:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:35:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 04:35:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:35:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-22 04:35:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-22 04:35:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:35:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-22 04:35:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:35:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:35:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:35:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:35:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-22 04:35:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-22 04:35:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:35:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-22 04:35:59,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699192073] [2020-08-22 04:35:59,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:35:59,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 04:35:59,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090493648] [2020-08-22 04:35:59,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 04:35:59,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:35:59,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 04:35:59,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:35:59,269 INFO L87 Difference]: Start difference. First operand 1174 states and 1389 transitions. Second operand 16 states. [2020-08-22 04:36:00,358 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:36:00,686 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:36:00,937 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:36:01,178 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:36:01,932 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:36:02,881 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:36:03,131 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:36:03,605 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:36:04,215 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:36:05,005 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:36:05,249 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:36:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:36:05,898 INFO L93 Difference]: Finished difference Result 2229 states and 2675 transitions. [2020-08-22 04:36:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 04:36:05,898 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 317 [2020-08-22 04:36:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:36:05,905 INFO L225 Difference]: With dead ends: 2229 [2020-08-22 04:36:05,905 INFO L226 Difference]: Without dead ends: 1176 [2020-08-22 04:36:05,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 04:36:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states.