/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:27:37,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:27:37,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:27:37,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:27:37,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:27:37,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:27:37,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:27:37,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:27:37,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:27:37,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:27:37,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:27:37,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:27:37,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:27:37,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:27:37,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:27:37,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:27:37,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:27:37,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:27:37,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:27:37,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:27:37,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:27:37,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:27:37,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:27:37,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:27:37,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:27:37,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:27:37,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:27:37,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:27:37,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:27:37,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:27:37,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:27:37,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:27:37,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:27:37,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:27:37,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:27:37,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:27:37,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:27:37,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:27:37,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:27:37,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:27:37,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:27:37,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:27:37,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:27:37,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:27:37,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:27:37,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:27:37,826 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:27:37,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:27:37,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:27:37,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:27:37,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:27:37,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:27:37,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:27:37,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:27:37,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:27:37,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:27:37,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:27:37,829 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:27:37,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:27:37,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:27:37,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:27:37,829 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:27:37,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:27:37,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:27:37,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:27:37,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:27:37,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:27:37,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:27:37,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:27:37,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:27:37,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:27:37,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:27:38,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:27:38,174 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:27:38,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:27:38,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:27:38,184 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:27:38,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-22 04:27:38,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e5e9f85/6912ff80d6cb4baebf6e8eaa45ce9b32/FLAGe7fc05fd0 [2020-08-22 04:27:38,730 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:27:38,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-22 04:27:38,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e5e9f85/6912ff80d6cb4baebf6e8eaa45ce9b32/FLAGe7fc05fd0 [2020-08-22 04:27:39,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30e5e9f85/6912ff80d6cb4baebf6e8eaa45ce9b32 [2020-08-22 04:27:39,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:27:39,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:27:39,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:27:39,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:27:39,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:27:39,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3210105d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39, skipping insertion in model container [2020-08-22 04:27:39,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:27:39,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:27:39,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:27:39,683 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:27:39,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:27:39,826 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:27:39,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39 WrapperNode [2020-08-22 04:27:39,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:27:39,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:27:39,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:27:39,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:27:39,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (1/1) ... [2020-08-22 04:27:39,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:27:39,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:27:39,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:27:39,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:27:39,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:27:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:27:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:27:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:27:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:27:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:27:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:27:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:27:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:27:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:27:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:27:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:27:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:27:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:27:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:27:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:27:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:27:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:27:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:27:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:27:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:27:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:27:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:27:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:27:39,990 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:27:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:27:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:27:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:27:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:27:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:27:39,991 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:27:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:27:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:27:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:27:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:27:39,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:27:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:27:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:27:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:27:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:27:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:27:39,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:27:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:27:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:27:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:27:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:27:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:27:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:27:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:27:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:27:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:27:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:27:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:27:39,995 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:27:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:27:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:27:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:27:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:27:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:27:39,996 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:27:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:27:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:27:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:27:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:27:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:27:39,997 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:27:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:27:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:27:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:27:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:27:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:27:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:27:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:27:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 04:27:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:27:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:27:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:27:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:27:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:27:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:27:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:27:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:27:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:27:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:27:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:27:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:27:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:27:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:27:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:27:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:27:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:27:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:27:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:27:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:27:40,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:27:41,079 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:27:41,079 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:27:41,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:27:41 BoogieIcfgContainer [2020-08-22 04:27:41,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:27:41,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:27:41,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:27:41,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:27:41,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:27:39" (1/3) ... [2020-08-22 04:27:41,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c0ced4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:27:41, skipping insertion in model container [2020-08-22 04:27:41,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:39" (2/3) ... [2020-08-22 04:27:41,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c0ced4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:27:41, skipping insertion in model container [2020-08-22 04:27:41,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:27:41" (3/3) ... [2020-08-22 04:27:41,103 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-08-22 04:27:41,116 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:27:41,128 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:27:41,144 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:27:41,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:27:41,174 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:27:41,174 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:27:41,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:27:41,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:27:41,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:27:41,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:27:41,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:27:41,204 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-22 04:27:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:27:41,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:41,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:27:41,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:41,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:41,230 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2020-08-22 04:27:41,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:41,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217717374] [2020-08-22 04:27:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,873 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:27:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:27:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:41,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:41,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217717374] [2020-08-22 04:27:41,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:41,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:27:41,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026341855] [2020-08-22 04:27:41,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:27:41,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:42,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:27:42,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:27:42,005 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-08-22 04:27:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:43,192 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2020-08-22 04:27:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:27:43,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 04:27:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:43,209 INFO L225 Difference]: With dead ends: 301 [2020-08-22 04:27:43,210 INFO L226 Difference]: Without dead ends: 168 [2020-08-22 04:27:43,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:27:43,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-22 04:27:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-22 04:27:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-22 04:27:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-08-22 04:27:43,329 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2020-08-22 04:27:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:43,330 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-08-22 04:27:43,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:27:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-08-22 04:27:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:27:43,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:43,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:27:43,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:27:43,343 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:43,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2020-08-22 04:27:43,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:43,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205005795] [2020-08-22 04:27:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,729 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:43,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:27:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:27:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:43,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205005795] [2020-08-22 04:27:43,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:43,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:27:43,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271450994] [2020-08-22 04:27:43,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:27:43,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:43,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:27:43,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:27:43,824 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2020-08-22 04:27:44,272 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:45,184 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-08-22 04:27:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:27:45,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 04:27:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:45,189 INFO L225 Difference]: With dead ends: 240 [2020-08-22 04:27:45,189 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 04:27:45,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:27:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 04:27:45,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-08-22 04:27:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-22 04:27:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-08-22 04:27:45,234 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2020-08-22 04:27:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:45,234 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-08-22 04:27:45,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:27:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-08-22 04:27:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 04:27:45,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:45,237 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] [2020-08-22 04:27:45,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:27:45,238 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2020-08-22 04:27:45,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:45,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749103454] [2020-08-22 04:27:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,620 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:45,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:27:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:27:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:45,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749103454] [2020-08-22 04:27:45,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:45,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:27:45,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988606705] [2020-08-22 04:27:45,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:27:45,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:45,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:27:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:27:45,800 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2020-08-22 04:27:46,182 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:46,511 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:46,751 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:46,986 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:47,767 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:49,686 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2020-08-22 04:27:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:27:49,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-22 04:27:49,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:49,696 INFO L225 Difference]: With dead ends: 423 [2020-08-22 04:27:49,696 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 04:27:49,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:27:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 04:27:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-08-22 04:27:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-22 04:27:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-22 04:27:49,783 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2020-08-22 04:27:49,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:49,784 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-22 04:27:49,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:27:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-22 04:27:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 04:27:49,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:49,786 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] [2020-08-22 04:27:49,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:27:49,786 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2020-08-22 04:27:49,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:49,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464146926] [2020-08-22 04:27:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,136 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:27:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:27:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:27:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:50,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464146926] [2020-08-22 04:27:50,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:50,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:27:50,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292657352] [2020-08-22 04:27:50,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:27:50,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:27:50,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:27:50,228 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2020-08-22 04:27:50,656 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:51,692 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:52,105 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:52,436 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:52,755 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:54,102 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2020-08-22 04:27:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:27:54,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 04:27:54,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:54,111 INFO L225 Difference]: With dead ends: 845 [2020-08-22 04:27:54,112 INFO L226 Difference]: Without dead ends: 608 [2020-08-22 04:27:54,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:27:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-08-22 04:27:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2020-08-22 04:27:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-22 04:27:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2020-08-22 04:27:54,239 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2020-08-22 04:27:54,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:54,240 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2020-08-22 04:27:54,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:27:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2020-08-22 04:27:54,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 04:27:54,243 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:54,243 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] [2020-08-22 04:27:54,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:27:54,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:54,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2020-08-22 04:27:54,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:54,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917396946] [2020-08-22 04:27:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,596 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:54,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:27:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:27:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:27:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 04:27:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:54,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917396946] [2020-08-22 04:27:54,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:54,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:27:54,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035204787] [2020-08-22 04:27:54,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:27:54,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:54,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:27:54,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:27:54,729 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2020-08-22 04:27:55,180 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:56,217 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:56,549 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:56,824 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:57,476 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:58,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:58,726 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2020-08-22 04:27:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 04:27:58,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 04:27:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:58,736 INFO L225 Difference]: With dead ends: 1339 [2020-08-22 04:27:58,736 INFO L226 Difference]: Without dead ends: 889 [2020-08-22 04:27:58,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 04:27:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-22 04:27:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2020-08-22 04:27:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-08-22 04:27:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2020-08-22 04:27:58,892 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2020-08-22 04:27:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:58,893 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2020-08-22 04:27:58,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:27:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2020-08-22 04:27:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 04:27:58,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:58,896 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, 1, 1, 1, 1, 1] [2020-08-22 04:27:58,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:27:58,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2020-08-22 04:27:58,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:58,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378544714] [2020-08-22 04:27:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,149 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:59,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:27:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:27:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:27:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:27:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:27:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:27:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:27:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:27:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:59,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378544714] [2020-08-22 04:27:59,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:59,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:27:59,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221277461] [2020-08-22 04:27:59,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:27:59,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:59,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:27:59,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:27:59,320 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2020-08-22 04:27:59,665 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:00,690 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:00,943 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 04:28:01,238 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:01,505 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:03,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:03,539 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2020-08-22 04:28:03,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 04:28:03,539 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 04:28:03,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:03,555 INFO L225 Difference]: With dead ends: 2350 [2020-08-22 04:28:03,555 INFO L226 Difference]: Without dead ends: 1685 [2020-08-22 04:28:03,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 04:28:03,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-22 04:28:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2020-08-22 04:28:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-22 04:28:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2020-08-22 04:28:03,957 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2020-08-22 04:28:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:03,958 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2020-08-22 04:28:03,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:28:03,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2020-08-22 04:28:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 04:28:03,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:03,964 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, 1, 1, 1, 1, 1] [2020-08-22 04:28:03,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:28:03,964 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:03,964 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2020-08-22 04:28:03,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:03,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678692941] [2020-08-22 04:28:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,228 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:28:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:28:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:28:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:28:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:04,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678692941] [2020-08-22 04:28:04,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:04,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:28:04,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751003608] [2020-08-22 04:28:04,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:28:04,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:04,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:28:04,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:28:04,417 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2020-08-22 04:28:05,552 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:05,833 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 04:28:06,154 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:06,423 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:07,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:07,850 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2020-08-22 04:28:07,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:28:07,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 04:28:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:07,864 INFO L225 Difference]: With dead ends: 2904 [2020-08-22 04:28:07,865 INFO L226 Difference]: Without dead ends: 1685 [2020-08-22 04:28:07,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:28:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-22 04:28:08,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2020-08-22 04:28:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-08-22 04:28:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2020-08-22 04:28:08,136 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2020-08-22 04:28:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:08,136 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2020-08-22 04:28:08,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:28:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2020-08-22 04:28:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 04:28:08,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:08,140 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, 1, 1, 1, 1, 1] [2020-08-22 04:28:08,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:28:08,140 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:08,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:08,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2020-08-22 04:28:08,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:08,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875493870] [2020-08-22 04:28:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,478 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:08,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:28:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:28:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 04:28:08,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 04:28:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:08,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875493870] [2020-08-22 04:28:08,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:08,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:28:08,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221183861] [2020-08-22 04:28:08,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:28:08,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:08,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:28:08,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:28:08,670 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2020-08-22 04:28:09,246 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:09,501 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:09,740 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:10,548 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:10,824 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:11,075 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:12,464 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2020-08-22 04:28:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:28:12,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-22 04:28:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:12,476 INFO L225 Difference]: With dead ends: 2600 [2020-08-22 04:28:12,477 INFO L226 Difference]: Without dead ends: 1341 [2020-08-22 04:28:12,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:28:12,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-08-22 04:28:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2020-08-22 04:28:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-08-22 04:28:12,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2020-08-22 04:28:12,704 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2020-08-22 04:28:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:12,705 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2020-08-22 04:28:12,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:28:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2020-08-22 04:28:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-22 04:28:12,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:12,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:12,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:28:12,708 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:12,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2020-08-22 04:28:12,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:12,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935739190] [2020-08-22 04:28:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:12,965 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:12,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:12,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:12,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:28:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:28:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:28:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-22 04:28:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 04:28:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:13,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935739190] [2020-08-22 04:28:13,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:13,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:28:13,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114880164] [2020-08-22 04:28:13,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:28:13,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:13,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:28:13,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:28:13,109 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2020-08-22 04:28:13,501 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:16,279 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2020-08-22 04:28:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:28:16,280 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-22 04:28:16,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:16,294 INFO L225 Difference]: With dead ends: 2130 [2020-08-22 04:28:16,294 INFO L226 Difference]: Without dead ends: 2127 [2020-08-22 04:28:16,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 04:28:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-08-22 04:28:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2020-08-22 04:28:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-08-22 04:28:16,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2020-08-22 04:28:16,684 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2020-08-22 04:28:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:16,686 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2020-08-22 04:28:16,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:28:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2020-08-22 04:28:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-22 04:28:16,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:16,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:16,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:28:16,696 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:16,696 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2020-08-22 04:28:16,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:16,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944483408] [2020-08-22 04:28:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:16,978 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:16,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:16,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:16,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:28:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:28:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:28:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:28:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 04:28:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:28:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:28:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 04:28:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 04:28:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 04:28:17,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944483408] [2020-08-22 04:28:17,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:28:17,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 04:28:17,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477820779] [2020-08-22 04:28:17,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 04:28:17,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:17,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 04:28:17,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-22 04:28:17,432 INFO L87 Difference]: Start difference. First operand 1652 states and 1981 transitions. Second operand 19 states. [2020-08-22 04:28:18,044 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:18,387 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 04:28:18,642 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:28:18,879 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:28:19,626 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:20,242 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:20,687 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:23,058 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:23,344 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:23,614 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:23,877 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:24,133 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:24,377 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:24,689 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:24,946 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:25,966 INFO L93 Difference]: Finished difference Result 3563 states and 4503 transitions. [2020-08-22 04:28:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-22 04:28:25,967 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-22 04:28:25,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:25,980 INFO L225 Difference]: With dead ends: 3563 [2020-08-22 04:28:25,980 INFO L226 Difference]: Without dead ends: 1939 [2020-08-22 04:28:25,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-22 04:28:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-08-22 04:28:26,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1598. [2020-08-22 04:28:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-08-22 04:28:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1879 transitions. [2020-08-22 04:28:26,427 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1879 transitions. Word has length 150 [2020-08-22 04:28:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:26,428 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1879 transitions. [2020-08-22 04:28:26,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 04:28:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1879 transitions. [2020-08-22 04:28:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 04:28:26,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:26,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:26,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:28:26,438 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:26,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1053600099, now seen corresponding path program 1 times [2020-08-22 04:28:26,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:26,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940692693] [2020-08-22 04:28:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,750 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:26,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:28:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:28:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:28:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:28:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 04:28:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:28:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 04:28:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 04:28:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 04:28:26,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940692693] [2020-08-22 04:28:26,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:28:26,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 04:28:26,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385419763] [2020-08-22 04:28:26,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 04:28:26,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:26,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 04:28:26,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:28:26,978 INFO L87 Difference]: Start difference. First operand 1598 states and 1879 transitions. Second operand 14 states. [2020-08-22 04:28:27,482 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:28:27,730 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:27,964 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:28,490 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:29,873 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:31,666 INFO L93 Difference]: Finished difference Result 2988 states and 3684 transitions. [2020-08-22 04:28:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 04:28:31,667 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-08-22 04:28:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:31,679 INFO L225 Difference]: With dead ends: 2988 [2020-08-22 04:28:31,679 INFO L226 Difference]: Without dead ends: 1734 [2020-08-22 04:28:31,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 04:28:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-08-22 04:28:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1482. [2020-08-22 04:28:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-22 04:28:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1650 transitions. [2020-08-22 04:28:32,115 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1650 transitions. Word has length 154 [2020-08-22 04:28:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:32,116 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1650 transitions. [2020-08-22 04:28:32,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 04:28:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1650 transitions. [2020-08-22 04:28:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-22 04:28:32,121 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:32,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:32,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:28:32,122 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:32,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:32,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2018968461, now seen corresponding path program 1 times [2020-08-22 04:28:32,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:32,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346840384] [2020-08-22 04:28:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,393 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:32,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:28:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:28:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 04:28:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 04:28:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 04:28:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 04:28:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 04:28:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 04:28:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 04:28:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-22 04:28:32,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346840384] [2020-08-22 04:28:32,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:28:32,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:28:32,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604888774] [2020-08-22 04:28:32,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:28:32,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:32,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:28:32,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:28:32,590 INFO L87 Difference]: Start difference. First operand 1482 states and 1650 transitions. Second operand 10 states. [2020-08-22 04:28:33,452 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:35,068 INFO L93 Difference]: Finished difference Result 1918 states and 2270 transitions. [2020-08-22 04:28:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-22 04:28:35,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-08-22 04:28:35,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:35,069 INFO L225 Difference]: With dead ends: 1918 [2020-08-22 04:28:35,069 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 04:28:35,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 04:28:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 04:28:35,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 04:28:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 04:28:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 04:28:35,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-22 04:28:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:35,076 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 04:28:35,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:28:35,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 04:28:35,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 04:28:35,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:28:35,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.