/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:08:19,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:08:19,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:08:19,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:08:19,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:08:19,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:08:19,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:08:19,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:08:19,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:08:19,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:08:19,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:08:19,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:08:19,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:08:19,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:08:19,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:08:19,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:08:19,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:08:19,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:08:19,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:08:19,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:08:19,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:08:19,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:08:19,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:08:19,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:08:19,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:08:19,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:08:19,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:08:19,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:08:19,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:08:19,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:08:19,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:08:19,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:08:19,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:08:19,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:08:19,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:08:19,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:08:20,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:08:20,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:08:20,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:08:20,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:08:20,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:08:20,006 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 02:08:20,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:08:20,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:08:20,028 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:08:20,028 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:08:20,028 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:08:20,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:08:20,029 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:08:20,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:08:20,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:08:20,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:08:20,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:08:20,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:08:20,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:08:20,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:08:20,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:08:20,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:08:20,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:08:20,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:08:20,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:08:20,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:08:20,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:08:20,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:08:20,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:08:20,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:08:20,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:08:20,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:08:20,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:08:20,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:08:20,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:08:20,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:08:20,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:08:20,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:08:20,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:08:20,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:08:20,324 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:08:20,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-22 02:08:20,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1b197c14/38909b910efe455b930235b059befe8d/FLAG2653881ee [2020-08-22 02:08:20,915 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:08:20,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-22 02:08:20,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1b197c14/38909b910efe455b930235b059befe8d/FLAG2653881ee [2020-08-22 02:08:21,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1b197c14/38909b910efe455b930235b059befe8d [2020-08-22 02:08:21,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:08:21,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:08:21,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:08:21,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:08:21,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:08:21,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7035d330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21, skipping insertion in model container [2020-08-22 02:08:21,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:08:21,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:08:21,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:08:21,755 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:08:21,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:08:21,875 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:08:21,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21 WrapperNode [2020-08-22 02:08:21,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:08:21,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:08:21,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:08:21,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:08:21,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (1/1) ... [2020-08-22 02:08:21,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:08:21,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:08:21,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:08:21,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:08:21,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (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 02:08:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:08:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:08:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:08:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:08:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:08:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:08:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:08:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:08:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:08:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:08:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:08:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:08:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:08:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:08:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 02:08:22,067 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:08:22,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:08:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:08:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:08:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:08:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:08:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:08:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:08:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:08:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:08:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:08:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:08:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:08:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:08:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:08:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:08:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:08:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:08:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:08:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:08:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:08:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:08:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:08:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:08:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:08:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:08:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:08:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:08:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:08:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:08:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:08:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:08:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:08:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:08:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:08:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:08:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:08:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:08:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:08:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:08:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 02:08:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:08:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:08:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:08:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:08:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:08:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 02:08:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:08:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:08:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:08:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:08:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:08:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:08:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:08:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:08:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:08:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:08:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:08:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:08:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:08:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:08:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:08:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:08:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:08:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:08:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:08:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:08:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:08:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:08:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:08:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:08:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:08:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:08:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:08:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:08:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:08:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:08:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:08:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:08:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:08:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:08:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:08:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:08:23,124 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:08:23,125 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:08:23,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:08:23 BoogieIcfgContainer [2020-08-22 02:08:23,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:08:23,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:08:23,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:08:23,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:08:23,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:08:21" (1/3) ... [2020-08-22 02:08:23,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32626e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:08:23, skipping insertion in model container [2020-08-22 02:08:23,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:21" (2/3) ... [2020-08-22 02:08:23,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32626e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:08:23, skipping insertion in model container [2020-08-22 02:08:23,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:08:23" (3/3) ... [2020-08-22 02:08:23,138 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-22 02:08:23,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:08:23,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:08:23,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:08:23,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:08:23,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:08:23,195 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:08:23,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:08:23,196 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:08:23,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:08:23,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:08:23,197 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:08:23,219 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-22 02:08:23,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 02:08:23,229 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:23,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:23,231 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:23,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-22 02:08:23,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:23,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552812079] [2020-08-22 02:08:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:23,911 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:23,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:23,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:23,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:23,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:08:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:24,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:24,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:08:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:24,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:08:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:24,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552812079] [2020-08-22 02:08:24,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:24,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:08:24,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841839676] [2020-08-22 02:08:24,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:08:24,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:24,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:08:24,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:08:24,064 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-22 02:08:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:25,266 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-22 02:08:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:08:25,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 02:08:25,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:25,295 INFO L225 Difference]: With dead ends: 324 [2020-08-22 02:08:25,296 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 02:08:25,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:08:25,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 02:08:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-22 02:08:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-22 02:08:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-22 02:08:25,398 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-22 02:08:25,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:25,398 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-22 02:08:25,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:08:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-22 02:08:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 02:08:25,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:25,403 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:25,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:08:25,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:25,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:25,404 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-22 02:08:25,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:25,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706348908] [2020-08-22 02:08:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,747 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:08:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 02:08:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:08:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:25,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706348908] [2020-08-22 02:08:25,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:25,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:08:25,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758171667] [2020-08-22 02:08:25,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:08:25,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:25,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:08:25,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:08:25,841 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-22 02:08:26,290 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:27,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:27,277 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-22 02:08:27,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 02:08:27,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-22 02:08:27,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:27,281 INFO L225 Difference]: With dead ends: 259 [2020-08-22 02:08:27,281 INFO L226 Difference]: Without dead ends: 169 [2020-08-22 02:08:27,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 02:08:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-22 02:08:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-22 02:08:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-22 02:08:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-22 02:08:27,330 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-22 02:08:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:27,330 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-22 02:08:27,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:08:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-22 02:08:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 02:08:27,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:27,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:27,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:08:27,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:27,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:27,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-22 02:08:27,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:27,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518191888] [2020-08-22 02:08:27,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,706 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:27,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:08:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:08:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 02:08:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:27,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518191888] [2020-08-22 02:08:27,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:27,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:27,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784096172] [2020-08-22 02:08:27,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:27,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:27,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:27,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:27,807 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-22 02:08:28,162 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:28,499 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:28,753 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:29,004 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:29,958 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:31,823 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-22 02:08:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:08:31,824 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-22 02:08:31,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:31,829 INFO L225 Difference]: With dead ends: 460 [2020-08-22 02:08:31,829 INFO L226 Difference]: Without dead ends: 351 [2020-08-22 02:08:31,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:08:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-22 02:08:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-22 02:08:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-22 02:08:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-22 02:08:31,909 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-22 02:08:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:31,910 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-22 02:08:31,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-22 02:08:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:08:31,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:31,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:31,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:08:31,914 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:31,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-22 02:08:31,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:31,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505344276] [2020-08-22 02:08:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,257 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:32,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:08:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:08:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:08:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:08:32,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505344276] [2020-08-22 02:08:32,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:32,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:32,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4290568] [2020-08-22 02:08:32,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:32,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:32,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:32,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:32,392 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-22 02:08:32,751 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:33,498 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:34,310 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:34,627 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:34,914 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:35,162 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:35,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:35,895 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-22 02:08:35,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:08:35,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 02:08:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:35,903 INFO L225 Difference]: With dead ends: 747 [2020-08-22 02:08:35,903 INFO L226 Difference]: Without dead ends: 485 [2020-08-22 02:08:35,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:08:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-22 02:08:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-22 02:08:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-22 02:08:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-22 02:08:36,002 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-22 02:08:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:36,003 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-22 02:08:36,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-22 02:08:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:08:36,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:36,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:36,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:08:36,006 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:36,007 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-22 02:08:36,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:36,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419068050] [2020-08-22 02:08:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,339 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:08:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:08:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 02:08:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:08:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:36,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419068050] [2020-08-22 02:08:36,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:36,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:36,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512697708] [2020-08-22 02:08:36,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:36,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:36,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:36,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:36,504 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-22 02:08:36,888 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:37,993 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:38,263 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:08:38,531 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:38,795 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:40,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:40,062 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-22 02:08:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:08:40,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 02:08:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:40,075 INFO L225 Difference]: With dead ends: 1260 [2020-08-22 02:08:40,075 INFO L226 Difference]: Without dead ends: 871 [2020-08-22 02:08:40,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:08:40,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-22 02:08:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-22 02:08:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-22 02:08:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-22 02:08:40,274 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-22 02:08:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:40,276 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-22 02:08:40,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-22 02:08:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:08:40,283 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:40,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:40,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:08:40,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:40,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:40,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-22 02:08:40,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:40,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684464874] [2020-08-22 02:08:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,563 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:08:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:08:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 02:08:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:08:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:40,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684464874] [2020-08-22 02:08:40,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:40,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:40,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073223398] [2020-08-22 02:08:40,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:40,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:40,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:40,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:40,698 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-22 02:08:41,807 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:42,041 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:08:42,285 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:42,513 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:43,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:43,327 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-22 02:08:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:08:43,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 02:08:43,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:43,335 INFO L225 Difference]: With dead ends: 1585 [2020-08-22 02:08:43,335 INFO L226 Difference]: Without dead ends: 870 [2020-08-22 02:08:43,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:08:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-22 02:08:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-22 02:08:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-22 02:08:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-22 02:08:43,523 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-22 02:08:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:43,523 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-22 02:08:43,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:43,524 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-22 02:08:43,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 02:08:43,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:43,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:43,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:08:43,529 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:43,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-22 02:08:43,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:43,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712971882] [2020-08-22 02:08:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,818 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:43,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:08:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-22 02:08:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 02:08:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:08:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:44,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712971882] [2020-08-22 02:08:44,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:44,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:08:44,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440566211] [2020-08-22 02:08:44,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:08:44,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:44,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:08:44,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:08:44,007 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-22 02:08:44,528 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:44,767 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:44,991 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:45,793 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:46,057 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:46,291 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:47,183 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-22 02:08:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:08:47,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 02:08:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:47,189 INFO L225 Difference]: With dead ends: 1442 [2020-08-22 02:08:47,189 INFO L226 Difference]: Without dead ends: 707 [2020-08-22 02:08:47,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:08:47,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-22 02:08:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-22 02:08:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-22 02:08:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-22 02:08:47,310 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-22 02:08:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:47,310 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-22 02:08:47,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:08:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-22 02:08:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 02:08:47,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:47,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:47,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:08:47,314 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:47,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:47,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-22 02:08:47,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:47,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41280977] [2020-08-22 02:08:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,652 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:47,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:08:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:08:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 02:08:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 02:08:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-22 02:08:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:47,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41280977] [2020-08-22 02:08:47,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:47,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:08:47,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356740600] [2020-08-22 02:08:47,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:08:47,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:47,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:08:47,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:08:47,813 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-22 02:08:48,218 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:48,830 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:49,533 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:49,850 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:50,092 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:08:50,385 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:50,663 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:52,516 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:52,813 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:53,273 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-22 02:08:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 02:08:53,274 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-22 02:08:53,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:53,284 INFO L225 Difference]: With dead ends: 1853 [2020-08-22 02:08:53,285 INFO L226 Difference]: Without dead ends: 1437 [2020-08-22 02:08:53,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-22 02:08:53,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-22 02:08:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-22 02:08:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-22 02:08:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-22 02:08:53,561 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-22 02:08:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:53,566 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-22 02:08:53,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:08:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-22 02:08:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 02:08:53,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:53,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:53,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:08:53,574 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:53,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:53,575 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-22 02:08:53,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:53,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641643454] [2020-08-22 02:08:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:53,903 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:53,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:53,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:53,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:53,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:53,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:08:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:53,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:08:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:08:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:08:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 02:08:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-22 02:08:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 02:08:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:08:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 02:08:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-22 02:08:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 02:08:54,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641643454] [2020-08-22 02:08:54,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:08:54,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:08:54,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495956607] [2020-08-22 02:08:54,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:08:54,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:08:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:08:54,266 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-22 02:08:54,876 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:08:55,360 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 02:08:55,717 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 02:08:55,965 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 02:08:56,650 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-22 02:08:57,006 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 02:08:57,325 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 02:08:57,716 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 02:08:58,062 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 02:08:59,230 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:00,216 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 02:09:00,762 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-22 02:09:01,097 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:01,664 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:02,086 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 02:09:02,683 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-22 02:09:03,258 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-22 02:09:03,798 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:09:04,345 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-22 02:09:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:05,130 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-22 02:09:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-22 02:09:05,130 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-22 02:09:05,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:05,140 INFO L225 Difference]: With dead ends: 2875 [2020-08-22 02:09:05,141 INFO L226 Difference]: Without dead ends: 1784 [2020-08-22 02:09:05,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-22 02:09:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-22 02:09:05,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-22 02:09:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-22 02:09:05,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-22 02:09:05,510 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-22 02:09:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:05,511 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-22 02:09:05,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:09:05,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-22 02:09:05,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-22 02:09:05,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:05,518 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:05,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:09:05,519 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:05,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:05,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-22 02:09:05,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:05,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634844481] [2020-08-22 02:09:05,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,818 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:09:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:05,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:09:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 02:09:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:09:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:09:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 02:09:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:09:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:09:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-22 02:09:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-22 02:09:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-22 02:09:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 02:09:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-22 02:09:06,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634844481] [2020-08-22 02:09:06,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:09:06,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 02:09:06,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217701255] [2020-08-22 02:09:06,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 02:09:06,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:06,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 02:09:06,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:09:06,405 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-22 02:09:07,821 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:08,082 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:08,336 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:08,582 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:08,815 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:09,812 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:10,351 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 02:09:10,836 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 02:09:11,250 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:13,793 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-22 02:09:13,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 02:09:13,794 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-22 02:09:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:13,810 INFO L225 Difference]: With dead ends: 4467 [2020-08-22 02:09:13,811 INFO L226 Difference]: Without dead ends: 2691 [2020-08-22 02:09:13,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 02:09:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-22 02:09:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-22 02:09:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-22 02:09:14,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-22 02:09:14,312 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-22 02:09:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:14,313 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-22 02:09:14,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 02:09:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-22 02:09:14,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-22 02:09:14,322 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:14,322 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:14,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:09:14,323 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:14,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:14,323 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-22 02:09:14,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:14,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893690128] [2020-08-22 02:09:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,664 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:14,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:09:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:09:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 02:09:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:09:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:09:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:09:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-22 02:09:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:09:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:09:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-22 02:09:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-22 02:09:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-22 02:09:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-22 02:09:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-22 02:09:15,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893690128] [2020-08-22 02:09:15,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:09:15,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:09:15,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282926860] [2020-08-22 02:09:15,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:09:15,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:15,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:09:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:09:15,149 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-22 02:09:15,992 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:16,362 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 02:09:16,618 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:16,864 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:17,590 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:18,556 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:18,888 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:19,127 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:19,670 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191