/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:47:54,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:47:54,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:47:54,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:47:54,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:47:54,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:47:54,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:47:54,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:47:54,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:47:54,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:47:54,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:47:54,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:47:54,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:47:54,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:47:54,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:47:54,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:47:54,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:47:54,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:47:54,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:47:54,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:47:54,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:47:54,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:47:54,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:47:54,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:47:54,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:47:54,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:47:54,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:47:54,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:47:54,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:47:54,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:47:54,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:47:54,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:47:54,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:47:54,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:47:54,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:47:54,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:47:54,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:47:54,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:47:54,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:47:54,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:47:54,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:47:54,671 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 [2020-08-19 01:47:54,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:47:54,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:47:54,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:47:54,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:47:54,726 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:47:54,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:47:54,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:47:54,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:47:54,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:47:54,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:47:54,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:47:54,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:47:54,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:47:54,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:47:54,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:47:54,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:47:54,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:47:54,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:47:54,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:47:54,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:47:54,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:47:54,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:47:54,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:47:54,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:47:54,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:47:54,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:47:54,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:47:54,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:47:54,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:47:54,732 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:47:55,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:47:55,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:47:55,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:47:55,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:47:55,094 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:47:55,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-19 01:47:55,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d8dc45c/ccb5e237470441ada60ecc80966d93f8/FLAG2223db34d [2020-08-19 01:47:55,780 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:47:55,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-19 01:47:55,799 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d8dc45c/ccb5e237470441ada60ecc80966d93f8/FLAG2223db34d [2020-08-19 01:47:56,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49d8dc45c/ccb5e237470441ada60ecc80966d93f8 [2020-08-19 01:47:56,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:47:56,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:47:56,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:47:56,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:47:56,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:47:56,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56, skipping insertion in model container [2020-08-19 01:47:56,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:47:56,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:47:56,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:47:56,583 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:47:56,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:47:56,699 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:47:56,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56 WrapperNode [2020-08-19 01:47:56,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:47:56,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:47:56,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:47:56,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:47:56,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (1/1) ... [2020-08-19 01:47:56,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:47:56,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:47:56,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:47:56,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:47:56,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:47:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:47:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:47:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:47:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:47:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:47:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:47:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:47:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:47:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:47:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:47:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:47:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:47:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:47:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:47:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:47:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:47:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:47:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:47:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 01:47:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:47:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:47:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:47:56,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:47:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:47:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:47:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:47:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:47:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:47:56,880 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:47:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:47:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:47:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:47:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:47:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:47:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:47:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:47:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:47:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:47:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:47:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:47:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:47:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:47:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:47:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:47:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:47:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:47:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:47:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:47:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:47:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:47:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:47:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:47:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:47:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:47:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 01:47:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:47:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:47:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:47:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 01:47:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:47:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:47:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:47:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:47:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:47:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:47:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:47:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:47:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:47:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:47:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:47:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:47:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:47:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:47:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:47:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:47:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:47:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:47:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:47:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:47:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:47:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:47:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:47:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:47:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:47:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:47:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:47:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:47:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:47:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:47:56,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:47:57,980 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:47:57,981 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:47:57,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:47:57 BoogieIcfgContainer [2020-08-19 01:47:57,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:47:57,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:47:57,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:47:57,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:47:57,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:47:56" (1/3) ... [2020-08-19 01:47:57,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e56c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:47:57, skipping insertion in model container [2020-08-19 01:47:57,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:47:56" (2/3) ... [2020-08-19 01:47:57,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e56c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:47:57, skipping insertion in model container [2020-08-19 01:47:57,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:47:57" (3/3) ... [2020-08-19 01:47:57,994 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-19 01:47:58,005 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:47:58,014 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:47:58,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:47:58,055 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:47:58,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:47:58,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:47:58,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:47:58,056 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:47:58,056 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:47:58,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:47:58,056 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:47:58,082 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-19 01:47:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:47:58,093 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:47:58,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:47:58,095 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:47:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:47:58,102 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-19 01:47:58,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:47:58,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250532758] [2020-08-19 01:47:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:47:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,750 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:47:58,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:47:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:47:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:47:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:47:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:47:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:47:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:47:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:47:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:47:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:47:58,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250532758] [2020-08-19 01:47:58,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:47:58,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:47:58,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813283716] [2020-08-19 01:47:58,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:47:58,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:47:58,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:47:58,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:47:58,909 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-19 01:48:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:00,102 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-19 01:48:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:48:00,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 01:48:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:00,121 INFO L225 Difference]: With dead ends: 287 [2020-08-19 01:48:00,122 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 01:48:00,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:48:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 01:48:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-19 01:48:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 01:48:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-19 01:48:00,225 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-19 01:48:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:00,226 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-19 01:48:00,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:48:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-19 01:48:00,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 01:48:00,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:00,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:48:00,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:48:00,231 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:00,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:00,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-19 01:48:00,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:00,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982725102] [2020-08-19 01:48:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,667 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:00,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:48:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:48:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:48:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:48:00,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982725102] [2020-08-19 01:48:00,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:00,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:48:00,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099382617] [2020-08-19 01:48:00,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:48:00,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:00,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:48:00,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:48:00,716 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-19 01:48:01,167 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:01,877 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-19 01:48:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:48:01,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 01:48:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:01,880 INFO L225 Difference]: With dead ends: 220 [2020-08-19 01:48:01,881 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 01:48:01,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:48:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 01:48:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-19 01:48:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 01:48:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-19 01:48:01,919 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-19 01:48:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:01,920 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-19 01:48:01,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:48:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-19 01:48:01,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:48:01,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:01,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:48:01,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:48:01,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:01,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:01,923 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-19 01:48:01,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:01,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862135042] [2020-08-19 01:48:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,273 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:48:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:48:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:48:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:48:02,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862135042] [2020-08-19 01:48:02,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:02,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:48:02,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200848703] [2020-08-19 01:48:02,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:48:02,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:02,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:48:02,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:48:02,437 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-19 01:48:02,814 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:03,128 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:03,414 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:03,652 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:04,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:04,810 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-19 01:48:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:48:04,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 01:48:04,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:04,814 INFO L225 Difference]: With dead ends: 229 [2020-08-19 01:48:04,814 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 01:48:04,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:48:04,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 01:48:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-19 01:48:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 01:48:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-19 01:48:04,845 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-19 01:48:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:04,845 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-19 01:48:04,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:48:04,845 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-19 01:48:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 01:48:04,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:04,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:48:04,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:48:04,847 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:04,848 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-19 01:48:04,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:04,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668697490] [2020-08-19 01:48:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,110 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:05,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:48:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:48:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 01:48:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 01:48:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 01:48:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:05,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:48:05,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668697490] [2020-08-19 01:48:05,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:05,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:48:05,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462298980] [2020-08-19 01:48:05,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:48:05,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:05,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:48:05,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:48:05,195 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-19 01:48:05,543 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:06,686 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:07,245 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-19 01:48:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:48:07,246 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-19 01:48:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:07,250 INFO L225 Difference]: With dead ends: 324 [2020-08-19 01:48:07,250 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 01:48:07,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:48:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 01:48:07,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-19 01:48:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-19 01:48:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-19 01:48:07,299 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-19 01:48:07,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:07,300 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-19 01:48:07,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:48:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-19 01:48:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 01:48:07,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:07,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:48:07,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:48:07,302 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:07,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:07,303 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-19 01:48:07,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:07,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404909623] [2020-08-19 01:48:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,563 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:48:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:48:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:48:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 01:48:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 01:48:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-19 01:48:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:48:07,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404909623] [2020-08-19 01:48:07,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:07,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:48:07,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042140626] [2020-08-19 01:48:07,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:48:07,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:07,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:48:07,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:48:07,761 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-19 01:48:08,159 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:09,481 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:09,747 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:09,991 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:10,218 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:10,841 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-19 01:48:10,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:48:10,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-19 01:48:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:10,847 INFO L225 Difference]: With dead ends: 528 [2020-08-19 01:48:10,847 INFO L226 Difference]: Without dead ends: 359 [2020-08-19 01:48:10,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:48:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-19 01:48:10,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-19 01:48:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-19 01:48:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-19 01:48:10,922 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-19 01:48:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:10,922 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-19 01:48:10,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:48:10,923 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-19 01:48:10,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 01:48:10,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:10,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:48:10,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:48:10,925 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:10,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-19 01:48:10,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:10,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146872432] [2020-08-19 01:48:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,236 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:11,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:48:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:48:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:48:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:48:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 01:48:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 01:48:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:48:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:48:11,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146872432] [2020-08-19 01:48:11,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:11,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:48:11,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870533709] [2020-08-19 01:48:11,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:48:11,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:11,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:48:11,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:48:11,347 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-19 01:48:11,783 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:12,302 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:13,777 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:15,241 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-19 01:48:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:48:15,242 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 01:48:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:15,248 INFO L225 Difference]: With dead ends: 770 [2020-08-19 01:48:15,248 INFO L226 Difference]: Without dead ends: 590 [2020-08-19 01:48:15,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:48:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-19 01:48:15,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-19 01:48:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-19 01:48:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-19 01:48:15,369 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-19 01:48:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:15,369 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-19 01:48:15,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:48:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-19 01:48:15,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 01:48:15,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:15,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:48:15,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:48:15,372 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:15,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:15,372 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-19 01:48:15,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:15,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096323326] [2020-08-19 01:48:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,593 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:15,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:48:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:48:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:48:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:48:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 01:48:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 01:48:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:48:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:48:15,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096323326] [2020-08-19 01:48:15,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:15,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:48:15,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612973215] [2020-08-19 01:48:15,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:48:15,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:15,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:48:15,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:48:15,692 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-19 01:48:16,495 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:16,723 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:16,971 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:17,907 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-19 01:48:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:48:17,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-19 01:48:17,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:17,914 INFO L225 Difference]: With dead ends: 947 [2020-08-19 01:48:17,914 INFO L226 Difference]: Without dead ends: 566 [2020-08-19 01:48:17,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:48:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-19 01:48:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-19 01:48:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-19 01:48:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-19 01:48:18,007 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-19 01:48:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:18,008 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-19 01:48:18,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:48:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-19 01:48:18,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 01:48:18,009 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:18,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:48:18,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:48:18,010 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:18,010 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-19 01:48:18,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:18,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539844436] [2020-08-19 01:48:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,271 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:18,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:48:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:48:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:48:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:48:18,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 01:48:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 01:48:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:48:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:48:18,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539844436] [2020-08-19 01:48:18,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:18,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:48:18,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464995324] [2020-08-19 01:48:18,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:48:18,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:18,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:48:18,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:48:18,473 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-19 01:48:19,241 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:19,488 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:19,726 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:20,373 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:20,602 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:48:20,879 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:21,155 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:22,270 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-19 01:48:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:48:22,270 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-19 01:48:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:22,275 INFO L225 Difference]: With dead ends: 1071 [2020-08-19 01:48:22,275 INFO L226 Difference]: Without dead ends: 571 [2020-08-19 01:48:22,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 01:48:22,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-19 01:48:22,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-19 01:48:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-19 01:48:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-19 01:48:22,387 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-19 01:48:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:22,388 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-19 01:48:22,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:48:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-19 01:48:22,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-19 01:48:22,389 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:22,390 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] [2020-08-19 01:48:22,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:48:22,390 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:22,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-19 01:48:22,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:22,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134971050] [2020-08-19 01:48:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,690 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:22,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:48:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:48:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:48:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:48:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:48:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 01:48:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 01:48:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:48:22,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134971050] [2020-08-19 01:48:22,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:48:22,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:48:22,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753332277] [2020-08-19 01:48:22,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:48:22,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:22,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:48:22,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:48:22,951 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-19 01:48:23,407 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:24,113 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:24,913 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:48:25,272 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:48:25,581 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:48:25,842 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:48:26,129 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:48:26,390 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:48:26,890 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-19 01:48:27,152 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:48:27,454 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:48:27,731 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 01:48:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:29,788 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-19 01:48:29,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:48:29,789 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-19 01:48:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:29,797 INFO L225 Difference]: With dead ends: 1563 [2020-08-19 01:48:29,797 INFO L226 Difference]: Without dead ends: 1056 [2020-08-19 01:48:29,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:48:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-19 01:48:29,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-19 01:48:29,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-19 01:48:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-19 01:48:29,966 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-19 01:48:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:29,967 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-19 01:48:29,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:48:29,967 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-19 01:48:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 01:48:29,969 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:29,970 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] [2020-08-19 01:48:29,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:48:29,970 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:29,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:29,970 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-19 01:48:29,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:29,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784129165] [2020-08-19 01:48:29,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,258 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:30,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:48:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 01:48:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:48:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:48:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:48:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 01:48:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 01:48:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 01:48:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:48:30,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784129165] [2020-08-19 01:48:30,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:30,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-19 01:48:30,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543728381] [2020-08-19 01:48:30,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 01:48:30,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 01:48:30,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:48:30,421 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-19 01:48:30,952 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:31,196 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:31,436 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:31,962 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:32,627 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:32,975 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:33,609 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:33,876 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:48:34,135 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:48:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:35,641 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-19 01:48:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:48:35,642 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-19 01:48:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:35,649 INFO L225 Difference]: With dead ends: 2050 [2020-08-19 01:48:35,649 INFO L226 Difference]: Without dead ends: 1076 [2020-08-19 01:48:35,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-19 01:48:35,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-19 01:48:35,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-19 01:48:35,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-19 01:48:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-19 01:48:35,809 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-19 01:48:35,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:35,810 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-19 01:48:35,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 01:48:35,810 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-19 01:48:35,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-19 01:48:35,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:48:35,814 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] [2020-08-19 01:48:35,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:48:35,815 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:48:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:48:35,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-19 01:48:35,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:48:35,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291796465] [2020-08-19 01:48:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:48:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,146 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:48:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:48:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:48:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:48:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:48:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:48:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:48:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:48:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:48:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:48:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 01:48:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 01:48:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 01:48:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:48:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:48:36,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291796465] [2020-08-19 01:48:36,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:48:36,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-19 01:48:36,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826780065] [2020-08-19 01:48:36,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:48:36,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:48:36,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:48:36,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:48:36,339 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-19 01:48:37,098 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:37,331 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:37,548 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:48:38,558 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:48:39,040 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:48:39,345 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:48:39,616 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:48:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:48:40,292 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-19 01:48:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:48:40,293 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-19 01:48:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:48:40,294 INFO L225 Difference]: With dead ends: 1575 [2020-08-19 01:48:40,294 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:48:40,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-19 01:48:40,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:48:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:48:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:48:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:48:40,300 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-19 01:48:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:48:40,301 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:48:40,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:48:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:48:40,301 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:48:40,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:48:40,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:48:41,354 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-19 01:48:42,718 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-19 01:48:43,088 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-19 01:48:44,711 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-19 01:48:45,730 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-19 01:48:46,905 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-19 01:48:47,729 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-19 01:48:47,883 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 01:48:48,045 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 01:48:48,216 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-19 01:48:48,900 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-19 01:48:50,108 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-19 01:48:50,711 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-19 01:48:50,912 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-19 01:48:51,107 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 01:48:51,725 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-19 01:48:52,575 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-19 01:48:52,749 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-19 01:48:52,965 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:48:53,126 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-19 01:48:53,975 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-19 01:48:54,245 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-19 01:48:54,420 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-19 01:48:55,668 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 174 DAG size of output: 33 [2020-08-19 01:48:55,873 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 1