/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:55:47,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:55:47,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:55:47,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:55:47,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:55:47,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:55:47,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:55:47,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:55:47,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:55:47,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:55:47,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:55:47,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:55:47,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:55:47,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:55:47,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:55:47,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:55:47,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:55:47,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:55:47,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:55:47,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:55:47,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:55:47,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:55:47,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:55:47,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:55:47,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:55:47,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:55:47,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:55:47,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:55:47,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:55:47,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:55:47,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:55:47,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:55:47,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:55:47,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:55:47,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:55:47,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:55:47,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:55:47,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:55:47,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:55:47,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:55:47,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:55:47,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:55:48,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:55:48,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:55:48,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:55:48,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:55:48,006 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:55:48,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:55:48,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:55:48,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:55:48,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:55:48,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:55:48,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:55:48,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:55:48,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:55:48,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:55:48,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:55:48,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:55:48,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:55:48,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:55:48,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:55:48,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:55:48,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:55:48,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:55:48,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:55:48,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:55:48,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:55:48,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:55:48,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:55:48,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:55:48,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:55:48,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:55:48,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:55:48,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:55:48,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:55:48,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:55:48,375 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:55:48,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-19 05:55:48,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65e32894d/b4d8fde659154f23b53a39b4ddf7d1f4/FLAGe753d4dea [2020-08-19 05:55:49,012 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:55:49,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product60.cil.c [2020-08-19 05:55:49,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65e32894d/b4d8fde659154f23b53a39b4ddf7d1f4/FLAGe753d4dea [2020-08-19 05:55:49,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65e32894d/b4d8fde659154f23b53a39b4ddf7d1f4 [2020-08-19 05:55:49,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:55:49,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:55:49,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:55:49,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:55:49,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:55:49,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:55:49" (1/1) ... [2020-08-19 05:55:49,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c866d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:49, skipping insertion in model container [2020-08-19 05:55:49,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:55:49" (1/1) ... [2020-08-19 05:55:49,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:55:49,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:55:49,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:55:49,913 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:55:49,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:55:50,029 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:55:50,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50 WrapperNode [2020-08-19 05:55:50,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:55:50,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:55:50,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:55:50,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:55:50,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (1/1) ... [2020-08-19 05:55:50,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (1/1) ... [2020-08-19 05:55:50,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (1/1) ... [2020-08-19 05:55:50,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (1/1) ... [2020-08-19 05:55:50,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (1/1) ... [2020-08-19 05:55:50,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (1/1) ... [2020-08-19 05:55:50,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (1/1) ... [2020-08-19 05:55:50,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:55:50,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:55:50,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:55:50,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:55:50,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:55:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:55:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:55:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:55:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:55:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:55:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:55:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:55:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 05:55:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:55:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:55:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:55:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:55:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:55:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:55:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:55:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 05:55:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:55:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:55:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 05:55:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 05:55:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 05:55:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:55:50,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:55:50,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:55:50,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:55:50,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:55:50,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:55:50,199 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:55:50,200 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:55:50,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:55:50,200 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:55:50,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:55:50,200 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:55:50,200 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:55:50,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:55:50,201 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:55:50,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:55:50,201 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:55:50,201 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:55:50,201 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:55:50,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:55:50,202 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:55:50,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:55:50,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:55:50,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:55:50,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:55:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:55:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:55:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:55:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:55:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:55:50,203 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:55:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:55:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:55:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:55:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:55:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:55:50,204 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:55:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 05:55:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:55:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 05:55:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 05:55:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:55:50,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:55:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:55:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:55:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:55:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 05:55:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:55:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:55:50,206 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:55:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:55:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:55:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:55:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:55:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:55:50,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 05:55:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:55:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:55:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:55:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:55:50,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:55:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:55:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:55:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:55:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:55:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:55:50,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:55:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:55:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:55:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:55:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:55:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:55:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:55:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:55:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:55:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:55:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:55:50,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:55:51,197 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:55:51,198 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:55:51,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:55:51 BoogieIcfgContainer [2020-08-19 05:55:51,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:55:51,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:55:51,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:55:51,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:55:51,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:55:49" (1/3) ... [2020-08-19 05:55:51,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362100e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:55:51, skipping insertion in model container [2020-08-19 05:55:51,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:55:50" (2/3) ... [2020-08-19 05:55:51,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362100e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:55:51, skipping insertion in model container [2020-08-19 05:55:51,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:55:51" (3/3) ... [2020-08-19 05:55:51,212 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product60.cil.c [2020-08-19 05:55:51,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:55:51,230 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:55:51,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:55:51,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:55:51,271 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:55:51,271 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:55:51,271 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:55:51,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:55:51,272 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:55:51,272 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:55:51,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:55:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-08-19 05:55:51,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 05:55:51,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:51,308 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] [2020-08-19 05:55:51,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:51,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:51,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1771327782, now seen corresponding path program 1 times [2020-08-19 05:55:51,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:51,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970167423] [2020-08-19 05:55:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,055 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:52,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:55:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:55:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:55:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:52,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970167423] [2020-08-19 05:55:52,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:52,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:55:52,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408277177] [2020-08-19 05:55:52,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:55:52,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:52,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:55:52,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:55:52,236 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 4 states. [2020-08-19 05:55:53,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:55:53,369 INFO L93 Difference]: Finished difference Result 360 states and 456 transitions. [2020-08-19 05:55:53,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:55:53,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 05:55:53,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:55:53,387 INFO L225 Difference]: With dead ends: 360 [2020-08-19 05:55:53,387 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 05:55:53,393 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 [2020-08-19 05:55:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 05:55:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-08-19 05:55:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-19 05:55:53,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 190 transitions. [2020-08-19 05:55:53,505 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 190 transitions. Word has length 59 [2020-08-19 05:55:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:55:53,505 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 190 transitions. [2020-08-19 05:55:53,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:55:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 190 transitions. [2020-08-19 05:55:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 05:55:53,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:53,510 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] [2020-08-19 05:55:53,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:55:53,511 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:53,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:53,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1467126020, now seen corresponding path program 1 times [2020-08-19 05:55:53,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:53,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811739329] [2020-08-19 05:55:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,914 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:53,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:55:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:55:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:55:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:53,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811739329] [2020-08-19 05:55:53,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:53,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:55:53,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947670997] [2020-08-19 05:55:53,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:55:53,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:53,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:55:53,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:55:53,977 INFO L87 Difference]: Start difference. First operand 163 states and 190 transitions. Second operand 5 states. [2020-08-19 05:55:54,368 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:55:55,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:55:55,345 INFO L93 Difference]: Finished difference Result 295 states and 356 transitions. [2020-08-19 05:55:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:55:55,346 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 05:55:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:55:55,355 INFO L225 Difference]: With dead ends: 295 [2020-08-19 05:55:55,356 INFO L226 Difference]: Without dead ends: 188 [2020-08-19 05:55:55,359 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 [2020-08-19 05:55:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-19 05:55:55,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 154. [2020-08-19 05:55:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-19 05:55:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2020-08-19 05:55:55,435 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 60 [2020-08-19 05:55:55,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:55:55,435 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2020-08-19 05:55:55,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:55:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2020-08-19 05:55:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 05:55:55,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:55:55,438 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] [2020-08-19 05:55:55,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:55:55,439 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:55:55,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:55:55,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2049486337, now seen corresponding path program 1 times [2020-08-19 05:55:55,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:55:55,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365148298] [2020-08-19 05:55:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:55:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,763 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:55:55,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:55:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:55:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:55:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:55:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:55:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:55:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:55:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:55:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 05:55:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:55:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:55:55,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365148298] [2020-08-19 05:55:55,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:55:55,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:55:55,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627157082] [2020-08-19 05:55:55,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:55:55,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:55:55,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:55:55,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:55:55,885 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand 9 states. [2020-08-19 05:55:56,215 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:55:56,542 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:56,782 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:57,011 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:55:57,916 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:00,026 INFO L93 Difference]: Finished difference Result 515 states and 629 transitions. [2020-08-19 05:56:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:56:00,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 05:56:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:00,032 INFO L225 Difference]: With dead ends: 515 [2020-08-19 05:56:00,032 INFO L226 Difference]: Without dead ends: 389 [2020-08-19 05:56:00,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:56:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-08-19 05:56:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 324. [2020-08-19 05:56:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-08-19 05:56:00,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 388 transitions. [2020-08-19 05:56:00,113 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 388 transitions. Word has length 65 [2020-08-19 05:56:00,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:00,113 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 388 transitions. [2020-08-19 05:56:00,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:56:00,113 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 388 transitions. [2020-08-19 05:56:00,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 05:56:00,116 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:00,116 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] [2020-08-19 05:56:00,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:56:00,116 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1476281748, now seen corresponding path program 1 times [2020-08-19 05:56:00,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:00,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139032528] [2020-08-19 05:56:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,451 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:56:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:56:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 05:56:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:56:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:56:00,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139032528] [2020-08-19 05:56:00,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:00,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:56:00,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441234265] [2020-08-19 05:56:00,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:56:00,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:00,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:56:00,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:56:00,577 INFO L87 Difference]: Start difference. First operand 324 states and 388 transitions. Second operand 9 states. [2020-08-19 05:56:00,910 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:01,690 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:02,614 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:02,858 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:03,159 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:03,427 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:04,257 INFO L93 Difference]: Finished difference Result 819 states and 1054 transitions. [2020-08-19 05:56:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:56:04,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 05:56:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:04,264 INFO L225 Difference]: With dead ends: 819 [2020-08-19 05:56:04,264 INFO L226 Difference]: Without dead ends: 523 [2020-08-19 05:56:04,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:56:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-19 05:56:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 455. [2020-08-19 05:56:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-08-19 05:56:04,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2020-08-19 05:56:04,366 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 70 [2020-08-19 05:56:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:04,366 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2020-08-19 05:56:04,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:56:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2020-08-19 05:56:04,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 05:56:04,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:04,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:04,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:56:04,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:04,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash 340334758, now seen corresponding path program 1 times [2020-08-19 05:56:04,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:04,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641080180] [2020-08-19 05:56:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,644 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:04,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:56:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 05:56:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 05:56:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 05:56:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:04,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641080180] [2020-08-19 05:56:04,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:04,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:56:04,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208733690] [2020-08-19 05:56:04,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:56:04,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:04,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:56:04,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:56:04,796 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand 9 states. [2020-08-19 05:56:05,877 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:06,150 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:06,398 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:06,631 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:07,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:07,653 INFO L93 Difference]: Finished difference Result 975 states and 1246 transitions. [2020-08-19 05:56:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:56:07,654 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-08-19 05:56:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:07,662 INFO L225 Difference]: With dead ends: 975 [2020-08-19 05:56:07,662 INFO L226 Difference]: Without dead ends: 548 [2020-08-19 05:56:07,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:56:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-08-19 05:56:07,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 468. [2020-08-19 05:56:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-08-19 05:56:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 557 transitions. [2020-08-19 05:56:07,820 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 557 transitions. Word has length 108 [2020-08-19 05:56:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:07,821 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 557 transitions. [2020-08-19 05:56:07,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:56:07,821 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 557 transitions. [2020-08-19 05:56:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 05:56:07,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:07,823 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:07,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:56:07,824 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:07,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:07,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2026359836, now seen corresponding path program 1 times [2020-08-19 05:56:07,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:07,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355892755] [2020-08-19 05:56:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,095 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:08,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:56:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 05:56:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 05:56:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 05:56:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:08,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355892755] [2020-08-19 05:56:08,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:08,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 05:56:08,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583665550] [2020-08-19 05:56:08,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:56:08,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:08,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:56:08,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:56:08,260 INFO L87 Difference]: Start difference. First operand 468 states and 557 transitions. Second operand 11 states. [2020-08-19 05:56:08,744 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:09,001 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:09,250 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:10,066 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:10,331 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:10,578 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:11,653 INFO L93 Difference]: Finished difference Result 998 states and 1270 transitions. [2020-08-19 05:56:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:56:11,654 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-08-19 05:56:11,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:11,660 INFO L225 Difference]: With dead ends: 998 [2020-08-19 05:56:11,661 INFO L226 Difference]: Without dead ends: 558 [2020-08-19 05:56:11,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:56:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-08-19 05:56:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 476. [2020-08-19 05:56:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-08-19 05:56:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 565 transitions. [2020-08-19 05:56:11,762 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 565 transitions. Word has length 108 [2020-08-19 05:56:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:11,766 INFO L479 AbstractCegarLoop]: Abstraction has 476 states and 565 transitions. [2020-08-19 05:56:11,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:56:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 565 transitions. [2020-08-19 05:56:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 05:56:11,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:11,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:11,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:56:11,772 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:11,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:11,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2028067331, now seen corresponding path program 1 times [2020-08-19 05:56:11,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:11,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507041164] [2020-08-19 05:56:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,066 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:12,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:56:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 05:56:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 05:56:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 05:56:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:12,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507041164] [2020-08-19 05:56:12,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:12,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 05:56:12,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023899424] [2020-08-19 05:56:12,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:56:12,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:12,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:56:12,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:56:12,243 INFO L87 Difference]: Start difference. First operand 476 states and 565 transitions. Second operand 7 states. [2020-08-19 05:56:12,518 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:13,044 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:15,121 INFO L93 Difference]: Finished difference Result 1479 states and 1900 transitions. [2020-08-19 05:56:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:56:15,122 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-08-19 05:56:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:15,130 INFO L225 Difference]: With dead ends: 1479 [2020-08-19 05:56:15,131 INFO L226 Difference]: Without dead ends: 1031 [2020-08-19 05:56:15,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:56:15,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-08-19 05:56:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 953. [2020-08-19 05:56:15,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-19 05:56:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1151 transitions. [2020-08-19 05:56:15,361 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1151 transitions. Word has length 108 [2020-08-19 05:56:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:15,361 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1151 transitions. [2020-08-19 05:56:15,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:56:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1151 transitions. [2020-08-19 05:56:15,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 05:56:15,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:15,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:15,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:56:15,366 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:15,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1144962269, now seen corresponding path program 1 times [2020-08-19 05:56:15,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:15,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938963365] [2020-08-19 05:56:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,767 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 05:56:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 05:56:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 05:56:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 05:56:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 05:56:16,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938963365] [2020-08-19 05:56:16,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:56:16,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:56:16,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754143931] [2020-08-19 05:56:16,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:56:16,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:16,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:56:16,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:56:16,078 INFO L87 Difference]: Start difference. First operand 953 states and 1151 transitions. Second operand 12 states. [2020-08-19 05:56:16,695 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:17,551 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:18,245 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:18,559 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:18,805 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:19,079 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:19,339 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:21,577 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:21,867 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:22,457 INFO L93 Difference]: Finished difference Result 2713 states and 3488 transitions. [2020-08-19 05:56:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 05:56:22,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-08-19 05:56:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:22,473 INFO L225 Difference]: With dead ends: 2713 [2020-08-19 05:56:22,473 INFO L226 Difference]: Without dead ends: 1980 [2020-08-19 05:56:22,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 05:56:22,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-08-19 05:56:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1674. [2020-08-19 05:56:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-08-19 05:56:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2008 transitions. [2020-08-19 05:56:22,792 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2008 transitions. Word has length 112 [2020-08-19 05:56:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:22,796 INFO L479 AbstractCegarLoop]: Abstraction has 1674 states and 2008 transitions. [2020-08-19 05:56:22,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:56:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2008 transitions. [2020-08-19 05:56:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-08-19 05:56:22,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:22,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:22,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:56:22,804 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:22,805 INFO L82 PathProgramCache]: Analyzing trace with hash 164237146, now seen corresponding path program 1 times [2020-08-19 05:56:22,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:22,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136049386] [2020-08-19 05:56:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,101 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:56:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 05:56:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 05:56:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 05:56:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 05:56:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-19 05:56:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-19 05:56:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 05:56:23,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136049386] [2020-08-19 05:56:23,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:23,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 05:56:23,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651413188] [2020-08-19 05:56:23,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 05:56:23,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:23,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 05:56:23,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:56:23,399 INFO L87 Difference]: Start difference. First operand 1674 states and 2008 transitions. Second operand 16 states. [2020-08-19 05:56:23,847 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:24,224 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:56:24,502 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:56:24,749 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:56:25,445 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:25,741 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:26,103 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:26,406 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:27,778 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:28,365 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:28,639 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:28,948 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:29,499 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:29,882 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:30,278 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:31,022 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:31,326 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:56:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:32,159 INFO L93 Difference]: Finished difference Result 3619 states and 4470 transitions. [2020-08-19 05:56:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 05:56:32,160 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2020-08-19 05:56:32,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:32,172 INFO L225 Difference]: With dead ends: 3619 [2020-08-19 05:56:32,172 INFO L226 Difference]: Without dead ends: 2153 [2020-08-19 05:56:32,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-19 05:56:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2020-08-19 05:56:32,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 1961. [2020-08-19 05:56:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1961 states. [2020-08-19 05:56:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 2310 transitions. [2020-08-19 05:56:32,559 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 2310 transitions. Word has length 174 [2020-08-19 05:56:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:32,559 INFO L479 AbstractCegarLoop]: Abstraction has 1961 states and 2310 transitions. [2020-08-19 05:56:32,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 05:56:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 2310 transitions. [2020-08-19 05:56:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-08-19 05:56:32,571 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:32,571 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:32,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:56:32,572 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:32,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1190190750, now seen corresponding path program 1 times [2020-08-19 05:56:32,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:32,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003430434] [2020-08-19 05:56:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,855 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:56:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 05:56:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 05:56:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:56:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 05:56:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:56:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-19 05:56:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-19 05:56:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-19 05:56:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-08-19 05:56:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 05:56:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 82 proven. 31 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2020-08-19 05:56:33,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003430434] [2020-08-19 05:56:33,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:33,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:56:33,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64384411] [2020-08-19 05:56:33,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:56:33,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:33,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:56:33,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:56:33,237 INFO L87 Difference]: Start difference. First operand 1961 states and 2310 transitions. Second operand 15 states. [2020-08-19 05:56:34,504 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:34,761 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:35,000 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:56:35,232 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:35,489 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:36,515 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:37,088 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 05:56:37,562 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-19 05:56:38,052 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:56:40,995 INFO L93 Difference]: Finished difference Result 5471 states and 6670 transitions. [2020-08-19 05:56:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 05:56:40,996 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 311 [2020-08-19 05:56:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:56:41,017 INFO L225 Difference]: With dead ends: 5471 [2020-08-19 05:56:41,018 INFO L226 Difference]: Without dead ends: 3307 [2020-08-19 05:56:41,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 05:56:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2020-08-19 05:56:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2847. [2020-08-19 05:56:41,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-08-19 05:56:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3387 transitions. [2020-08-19 05:56:41,748 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3387 transitions. Word has length 311 [2020-08-19 05:56:41,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:56:41,749 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3387 transitions. [2020-08-19 05:56:41,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:56:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3387 transitions. [2020-08-19 05:56:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-08-19 05:56:41,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:56:41,762 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:56:41,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:56:41,762 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:56:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:56:41,763 INFO L82 PathProgramCache]: Analyzing trace with hash -547150695, now seen corresponding path program 1 times [2020-08-19 05:56:41,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:56:41,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793723544] [2020-08-19 05:56:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:56:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,121 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:56:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:56:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:56:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:56:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:56:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:56:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 05:56:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 05:56:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 05:56:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:56:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:56:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:56:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:56:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:56:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:56:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:56:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-19 05:56:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-19 05:56:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:56:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-19 05:56:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:56:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:56:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:56:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:56:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-08-19 05:56:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-19 05:56:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:56:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 91 proven. 38 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-08-19 05:56:42,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793723544] [2020-08-19 05:56:42,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:56:42,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 05:56:42,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564009993] [2020-08-19 05:56:42,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 05:56:42,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:56:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 05:56:42,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:56:42,692 INFO L87 Difference]: Start difference. First operand 2847 states and 3387 transitions. Second operand 16 states. [2020-08-19 05:56:43,174 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:56:43,518 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:43,794 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:44,052 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 05:56:44,820 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:45,888 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:56:46,170 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191