/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:08:34,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:08:34,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:08:34,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:08:34,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:08:34,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:08:34,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:08:34,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:08:34,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:08:34,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:08:34,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:08:34,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:08:34,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:08:34,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:08:34,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:08:34,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:08:34,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:08:34,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:08:34,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:08:34,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:08:34,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:08:34,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:08:34,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:08:34,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:08:34,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:08:34,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:08:34,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:08:34,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:08:34,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:08:34,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:08:34,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:08:34,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:08:34,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:08:34,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:08:34,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:08:34,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:08:34,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:08:34,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:08:34,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:08:34,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:08:34,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:08:34,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 02:08:34,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:08:34,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:08:34,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:08:34,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:08:34,262 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:08:34,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:08:34,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:08:34,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:08:34,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:08:34,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:08:34,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:08:34,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:08:34,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:08:34,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:08:34,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:08:34,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:08:34,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:08:34,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:08:34,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:08:34,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:08:34,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:08:34,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:08:34,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:08:34,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:08:34,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:08:34,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:08:34,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:08:34,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:08:34,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:08:34,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:08:34,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:08:34,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:08:34,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:08:34,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:08:34,572 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:08:34,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2020-08-22 02:08:34,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/249bb824a/adbdacbd2eb744a491c7550e8d977a91/FLAGb77d18814 [2020-08-22 02:08:35,132 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:08:35,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2020-08-22 02:08:35,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/249bb824a/adbdacbd2eb744a491c7550e8d977a91/FLAGb77d18814 [2020-08-22 02:08:35,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/249bb824a/adbdacbd2eb744a491c7550e8d977a91 [2020-08-22 02:08:35,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:08:35,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:08:35,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:08:35,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:08:35,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:08:35,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:08:35" (1/1) ... [2020-08-22 02:08:35,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:35, skipping insertion in model container [2020-08-22 02:08:35,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:08:35" (1/1) ... [2020-08-22 02:08:35,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:08:35,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:08:35,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:08:35,991 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:08:36,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:08:36,150 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:08:36,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36 WrapperNode [2020-08-22 02:08:36,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:08:36,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:08:36,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:08:36,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:08:36,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (1/1) ... [2020-08-22 02:08:36,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (1/1) ... [2020-08-22 02:08:36,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (1/1) ... [2020-08-22 02:08:36,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (1/1) ... [2020-08-22 02:08:36,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (1/1) ... [2020-08-22 02:08:36,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (1/1) ... [2020-08-22 02:08:36,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (1/1) ... [2020-08-22 02:08:36,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:08:36,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:08:36,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:08:36,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:08:36,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:08:36,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:08:36,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:08:36,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:08:36,338 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:08:36,338 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:08:36,339 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:08:36,339 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:08:36,339 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:08:36,339 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:08:36,340 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:08:36,340 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:08:36,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:08:36,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:08:36,340 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:08:36,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:08:36,341 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:08:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:08:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:08:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:08:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:08:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:08:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:08:36,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:08:36,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:08:36,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:08:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:08:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:08:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:08:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:08:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:08:36,344 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:08:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:08:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:08:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:08:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:08:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:08:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:08:36,345 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:08:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:08:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:08:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:08:36,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:08:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:08:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:08:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:08:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:08:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:08:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:08:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:08:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:08:36,349 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:08:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:08:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:08:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:08:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:08:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:08:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-22 02:08:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-22 02:08:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:08:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:08:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:08:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 02:08:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:08:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 02:08:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:08:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:08:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:08:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:08:36,352 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:08:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:08:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:08:36,353 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-22 02:08:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:08:36,354 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:08:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:08:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:08:36,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:08:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:08:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:08:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:08:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:08:36,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:08:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:08:36,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:08:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:08:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:08:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:08:36,358 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:08:36,359 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:08:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:08:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:08:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:08:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:08:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:08:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:08:36,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:08:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:08:36,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:08:37,454 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:08:37,454 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:08:37,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:08:37 BoogieIcfgContainer [2020-08-22 02:08:37,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:08:37,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:08:37,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:08:37,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:08:37,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:08:35" (1/3) ... [2020-08-22 02:08:37,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e2c1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:08:37, skipping insertion in model container [2020-08-22 02:08:37,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:08:36" (2/3) ... [2020-08-22 02:08:37,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e2c1a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:08:37, skipping insertion in model container [2020-08-22 02:08:37,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:08:37" (3/3) ... [2020-08-22 02:08:37,473 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2020-08-22 02:08:37,484 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:08:37,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:08:37,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:08:37,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:08:37,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:08:37,536 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:08:37,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:08:37,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:08:37,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:08:37,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:08:37,538 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:08:37,562 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-08-22 02:08:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 02:08:37,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:37,575 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:37,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:37,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:37,583 INFO L82 PathProgramCache]: Analyzing trace with hash -981984858, now seen corresponding path program 1 times [2020-08-22 02:08:37,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:37,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165285016] [2020-08-22 02:08:37,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,260 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:38,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:08:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 02:08:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 02:08:38,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:38,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165285016] [2020-08-22 02:08:38,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:38,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:08:38,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569114435] [2020-08-22 02:08:38,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:08:38,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:38,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:08:38,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:08:38,445 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 4 states. [2020-08-22 02:08:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:39,594 INFO L93 Difference]: Finished difference Result 330 states and 424 transitions. [2020-08-22 02:08:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 02:08:39,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 02:08:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:39,613 INFO L225 Difference]: With dead ends: 330 [2020-08-22 02:08:39,613 INFO L226 Difference]: Without dead ends: 182 [2020-08-22 02:08:39,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:08:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-22 02:08:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 149. [2020-08-22 02:08:39,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-08-22 02:08:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-08-22 02:08:39,721 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 59 [2020-08-22 02:08:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:39,721 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-08-22 02:08:39,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:08:39,722 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-08-22 02:08:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 02:08:39,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:39,731 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] [2020-08-22 02:08:39,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:08:39,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:39,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:39,733 INFO L82 PathProgramCache]: Analyzing trace with hash 75711308, now seen corresponding path program 1 times [2020-08-22 02:08:39,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:39,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412819784] [2020-08-22 02:08:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,142 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:40,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:40,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:08:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:08:40,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:40,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412819784] [2020-08-22 02:08:40,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:40,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:40,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167559173] [2020-08-22 02:08:40,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:40,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:40,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:40,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:40,259 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 9 states. [2020-08-22 02:08:40,656 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:41,019 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:41,289 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:41,546 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:42,555 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:44,469 INFO L93 Difference]: Finished difference Result 506 states and 636 transitions. [2020-08-22 02:08:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 02:08:44,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-22 02:08:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:44,483 INFO L225 Difference]: With dead ends: 506 [2020-08-22 02:08:44,483 INFO L226 Difference]: Without dead ends: 385 [2020-08-22 02:08:44,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:08:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-08-22 02:08:44,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 327. [2020-08-22 02:08:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-08-22 02:08:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 402 transitions. [2020-08-22 02:08:44,631 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 402 transitions. Word has length 64 [2020-08-22 02:08:44,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:44,631 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 402 transitions. [2020-08-22 02:08:44,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 402 transitions. [2020-08-22 02:08:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 02:08:44,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:44,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:08:44,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:08:44,644 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:44,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:44,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1055869647, now seen corresponding path program 1 times [2020-08-22 02:08:44,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:44,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044718193] [2020-08-22 02:08:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,072 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:45,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:08:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 02:08:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:08:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 02:08:45,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044718193] [2020-08-22 02:08:45,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:45,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:45,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805189770] [2020-08-22 02:08:45,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:45,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:45,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:45,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:45,217 INFO L87 Difference]: Start difference. First operand 327 states and 402 transitions. Second operand 9 states. [2020-08-22 02:08:45,576 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:46,204 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:47,308 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:47,586 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:47,858 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:48,144 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:49,062 INFO L93 Difference]: Finished difference Result 877 states and 1180 transitions. [2020-08-22 02:08:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 02:08:49,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-22 02:08:49,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:49,069 INFO L225 Difference]: With dead ends: 877 [2020-08-22 02:08:49,069 INFO L226 Difference]: Without dead ends: 578 [2020-08-22 02:08:49,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 02:08:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-08-22 02:08:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 488. [2020-08-22 02:08:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-08-22 02:08:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 609 transitions. [2020-08-22 02:08:49,171 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 609 transitions. Word has length 70 [2020-08-22 02:08:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:49,172 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 609 transitions. [2020-08-22 02:08:49,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 609 transitions. [2020-08-22 02:08:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:08:49,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:49,175 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] [2020-08-22 02:08:49,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:08:49,176 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:49,176 INFO L82 PathProgramCache]: Analyzing trace with hash -2082867985, now seen corresponding path program 1 times [2020-08-22 02:08:49,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:49,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364004972] [2020-08-22 02:08:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,462 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:49,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:08:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:08:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:08:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:49,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364004972] [2020-08-22 02:08:49,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:49,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:49,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239868362] [2020-08-22 02:08:49,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:49,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:49,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:49,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:49,715 INFO L87 Difference]: Start difference. First operand 488 states and 609 transitions. Second operand 9 states. [2020-08-22 02:08:50,119 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:08:51,172 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:08:51,492 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:51,785 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:52,029 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:53,589 INFO L93 Difference]: Finished difference Result 1509 states and 2131 transitions. [2020-08-22 02:08:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:08:53,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-08-22 02:08:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:53,602 INFO L225 Difference]: With dead ends: 1509 [2020-08-22 02:08:53,602 INFO L226 Difference]: Without dead ends: 1049 [2020-08-22 02:08:53,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:08:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2020-08-22 02:08:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 885. [2020-08-22 02:08:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2020-08-22 02:08:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1121 transitions. [2020-08-22 02:08:53,862 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1121 transitions. Word has length 107 [2020-08-22 02:08:53,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:53,864 INFO L479 AbstractCegarLoop]: Abstraction has 885 states and 1121 transitions. [2020-08-22 02:08:53,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1121 transitions. [2020-08-22 02:08:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:08:53,871 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:53,871 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] [2020-08-22 02:08:53,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:08:53,872 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:53,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1842327856, now seen corresponding path program 1 times [2020-08-22 02:08:53,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:53,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308293507] [2020-08-22 02:08:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,142 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:08:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:08:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:08:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:54,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308293507] [2020-08-22 02:08:54,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:54,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 02:08:54,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053585160] [2020-08-22 02:08:54,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 02:08:54,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:54,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 02:08:54,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 02:08:54,286 INFO L87 Difference]: Start difference. First operand 885 states and 1121 transitions. Second operand 9 states. [2020-08-22 02:08:55,304 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:55,603 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:08:55,858 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:56,104 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:08:57,116 INFO L93 Difference]: Finished difference Result 1913 states and 2626 transitions. [2020-08-22 02:08:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:08:57,117 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-08-22 02:08:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:08:57,126 INFO L225 Difference]: With dead ends: 1913 [2020-08-22 02:08:57,126 INFO L226 Difference]: Without dead ends: 1056 [2020-08-22 02:08:57,131 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 [2020-08-22 02:08:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-22 02:08:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 905. [2020-08-22 02:08:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-08-22 02:08:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1141 transitions. [2020-08-22 02:08:57,398 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1141 transitions. Word has length 107 [2020-08-22 02:08:57,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:08:57,399 INFO L479 AbstractCegarLoop]: Abstraction has 905 states and 1141 transitions. [2020-08-22 02:08:57,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:08:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1141 transitions. [2020-08-22 02:08:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-22 02:08:57,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:08:57,404 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] [2020-08-22 02:08:57,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:08:57,405 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:08:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:08:57,406 INFO L82 PathProgramCache]: Analyzing trace with hash 85944846, now seen corresponding path program 1 times [2020-08-22 02:08:57,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:08:57,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110237433] [2020-08-22 02:08:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:08:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,772 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:08:57,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:08:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:08:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:08:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:08:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:08:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:08:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:08:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:08:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:08:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:08:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:08:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 02:08:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-22 02:08:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:08:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:08:57,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110237433] [2020-08-22 02:08:57,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:08:57,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:08:57,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560122260] [2020-08-22 02:08:57,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:08:57,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:08:57,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:08:57,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:08:57,996 INFO L87 Difference]: Start difference. First operand 905 states and 1141 transitions. Second operand 11 states. [2020-08-22 02:08:58,531 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:08:58,776 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:59,008 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:08:59,761 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:00,008 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:00,235 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:01,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:01,356 INFO L93 Difference]: Finished difference Result 1702 states and 2268 transitions. [2020-08-22 02:09:01,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:09:01,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-08-22 02:09:01,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:01,363 INFO L225 Difference]: With dead ends: 1702 [2020-08-22 02:09:01,363 INFO L226 Difference]: Without dead ends: 797 [2020-08-22 02:09:01,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:09:01,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2020-08-22 02:09:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 697. [2020-08-22 02:09:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-08-22 02:09:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 843 transitions. [2020-08-22 02:09:01,473 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 843 transitions. Word has length 107 [2020-08-22 02:09:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:01,474 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 843 transitions. [2020-08-22 02:09:01,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:09:01,474 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 843 transitions. [2020-08-22 02:09:01,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-22 02:09:01,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:01,477 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] [2020-08-22 02:09:01,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:09:01,478 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:01,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:01,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1945052595, now seen corresponding path program 1 times [2020-08-22 02:09:01,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:01,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840836929] [2020-08-22 02:09:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:01,888 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:01,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:01,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:01,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:01,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:01,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 02:09:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 02:09:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 02:09:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 02:09:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:09:02,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840836929] [2020-08-22 02:09:02,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:09:02,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:09:02,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635472557] [2020-08-22 02:09:02,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:09:02,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:02,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:09:02,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:09:02,126 INFO L87 Difference]: Start difference. First operand 697 states and 843 transitions. Second operand 12 states. [2020-08-22 02:09:02,626 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:03,307 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:04,031 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:04,394 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:04,650 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:04,943 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:05,235 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:07,262 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:07,554 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:08,427 INFO L93 Difference]: Finished difference Result 2212 states and 3039 transitions. [2020-08-22 02:09:08,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 02:09:08,427 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 111 [2020-08-22 02:09:08,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:08,438 INFO L225 Difference]: With dead ends: 2212 [2020-08-22 02:09:08,439 INFO L226 Difference]: Without dead ends: 1674 [2020-08-22 02:09:08,443 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 [2020-08-22 02:09:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-08-22 02:09:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1447. [2020-08-22 02:09:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1447 states. [2020-08-22 02:09:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 1761 transitions. [2020-08-22 02:09:08,700 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 1761 transitions. Word has length 111 [2020-08-22 02:09:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:08,701 INFO L479 AbstractCegarLoop]: Abstraction has 1447 states and 1761 transitions. [2020-08-22 02:09:08,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:09:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 1761 transitions. [2020-08-22 02:09:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-08-22 02:09:08,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:08,715 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:09:08,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:09:08,716 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:08,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1487603991, now seen corresponding path program 1 times [2020-08-22 02:09:08,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:08,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111990399] [2020-08-22 02:09:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,114 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:09:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:09:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-22 02:09:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:09:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-22 02:09:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-08-22 02:09:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-22 02:09:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:09:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-22 02:09:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-22 02:09:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-08-22 02:09:09,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111990399] [2020-08-22 02:09:09,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:09:09,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 02:09:09,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806902364] [2020-08-22 02:09:09,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 02:09:09,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:09,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 02:09:09,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:09:09,459 INFO L87 Difference]: Start difference. First operand 1447 states and 1761 transitions. Second operand 14 states. [2020-08-22 02:09:10,423 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:10,749 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:10,970 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:11,947 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:12,186 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:12,474 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:12,714 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:09:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:13,854 INFO L93 Difference]: Finished difference Result 2877 states and 3721 transitions. [2020-08-22 02:09:13,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 02:09:13,855 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 220 [2020-08-22 02:09:13,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:13,867 INFO L225 Difference]: With dead ends: 2877 [2020-08-22 02:09:13,867 INFO L226 Difference]: Without dead ends: 1634 [2020-08-22 02:09:13,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2020-08-22 02:09:13,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-08-22 02:09:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1441. [2020-08-22 02:09:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1441 states. [2020-08-22 02:09:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 1751 transitions. [2020-08-22 02:09:14,156 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 1751 transitions. Word has length 220 [2020-08-22 02:09:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:14,158 INFO L479 AbstractCegarLoop]: Abstraction has 1441 states and 1751 transitions. [2020-08-22 02:09:14,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 02:09:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 1751 transitions. [2020-08-22 02:09:14,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-22 02:09:14,163 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:14,163 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, 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] [2020-08-22 02:09:14,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:09:14,164 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:14,164 INFO L82 PathProgramCache]: Analyzing trace with hash -451795391, now seen corresponding path program 1 times [2020-08-22 02:09:14,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:14,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30248822] [2020-08-22 02:09:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,553 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:14,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:09:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:09:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 02:09:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 02:09:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-22 02:09:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:09:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 02:09:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-22 02:09:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-22 02:09:14,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30248822] [2020-08-22 02:09:14,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:09:14,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-22 02:09:14,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600660103] [2020-08-22 02:09:14,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-22 02:09:14,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:14,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-22 02:09:14,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-22 02:09:14,904 INFO L87 Difference]: Start difference. First operand 1441 states and 1751 transitions. Second operand 16 states. [2020-08-22 02:09:15,490 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 02:09:15,825 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 02:09:16,093 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 02:09:16,339 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 02:09:16,974 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-22 02:09:17,227 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-22 02:09:17,565 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-22 02:09:18,058 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-22 02:09:18,350 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 02:09:19,769 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:20,568 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-22 02:09:21,150 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-22 02:09:21,581 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:22,205 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:22,654 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 02:09:23,301 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-22 02:09:23,985 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-22 02:09:24,506 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-22 02:09:25,043 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-22 02:09:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:09:26,759 INFO L93 Difference]: Finished difference Result 3256 states and 4210 transitions. [2020-08-22 02:09:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-08-22 02:09:26,760 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 170 [2020-08-22 02:09:26,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:09:26,772 INFO L225 Difference]: With dead ends: 3256 [2020-08-22 02:09:26,772 INFO L226 Difference]: Without dead ends: 2019 [2020-08-22 02:09:26,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=783, Invalid=3123, Unknown=0, NotChecked=0, Total=3906 [2020-08-22 02:09:26,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-08-22 02:09:27,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1735. [2020-08-22 02:09:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2020-08-22 02:09:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2097 transitions. [2020-08-22 02:09:27,058 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2097 transitions. Word has length 170 [2020-08-22 02:09:27,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:09:27,061 INFO L479 AbstractCegarLoop]: Abstraction has 1735 states and 2097 transitions. [2020-08-22 02:09:27,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-22 02:09:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2097 transitions. [2020-08-22 02:09:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-08-22 02:09:27,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:09:27,075 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:09:27,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:09:27,075 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:09:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:09:27,076 INFO L82 PathProgramCache]: Analyzing trace with hash 913052362, now seen corresponding path program 1 times [2020-08-22 02:09:27,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:09:27,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086863858] [2020-08-22 02:09:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:09:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,445 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:09:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:09:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:09:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 02:09:27,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:09:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:09:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 02:09:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:09:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-22 02:09:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:09:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:09:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-22 02:09:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:09:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:09:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 02:09:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 02:09:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-22 02:09:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:09:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-22 02:09:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:09:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:09:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:09:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:09:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-22 02:09:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-08-22 02:09:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:09:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-08-22 02:09:27,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086863858] [2020-08-22 02:09:27,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:09:27,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 02:09:27,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778395970] [2020-08-22 02:09:27,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 02:09:27,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:09:27,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 02:09:27,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:09:27,875 INFO L87 Difference]: Start difference. First operand 1735 states and 2097 transitions. Second operand 15 states. [2020-08-22 02:09:29,223 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:29,454 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:09:29,703 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:29,962 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:30,216 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:09:31,073 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 02:09:31,626 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 02:09:32,074 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-22 02:09:32,567 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191